<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:01a03488-2acd-75f1-84a0-5fe8e8a3bcc7,g:b7b34689-08db-4662-ba89-b12b4bf69199-->
<link:linkbase xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.xbrl.org/2003/linkbase http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd">
  <link:arcroleRef arcroleURI="https://xbrl.org/2023/arcrole/summation-item" xlink:type="simple" xlink:href="https://www.xbrl.org/2023/calculation-1.1.xsd#summation-item"/>
  <link:roleRef roleURI="http://soterahealth.com/role/ConsolidatedBalanceSheets" xlink:type="simple" xlink:href="shc-20260930.xsd#ConsolidatedBalanceSheets"/>
  <link:calculationLink xlink:role="http://soterahealth.com/role/ConsolidatedBalanceSheets" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_01a03488-2c25-75d1-b163-3ab4ab76b4b3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_01a03488-2c25-7a74-b148-ee95632d8989" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_01a03488-2c25-75d1-b163-3ab4ab76b4b3" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_01a03488-2c25-7a74-b148-ee95632d8989" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_01a03488-2c25-73a4-97d8-ef146a2a8cf2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommonStockValue"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_01a03488-2c25-75d1-b163-3ab4ab76b4b3" xlink:to="loc_us-gaap_CommonStockValue_01a03488-2c25-73a4-97d8-ef146a2a8cf2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_01a03488-2c25-7a42-a245-d5dd08efa34b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_01a03488-2c25-75d1-b163-3ab4ab76b4b3" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_01a03488-2c25-7a42-a245-d5dd08efa34b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PreferredStockValue_01a03488-2c25-7744-81ef-9184e2f24949" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockValue"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_01a03488-2c25-75d1-b163-3ab4ab76b4b3" xlink:to="loc_us-gaap_PreferredStockValue_01a03488-2c25-7744-81ef-9184e2f24949" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapital_01a03488-2c25-7a93-89f2-df6a84f30db1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapital"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_01a03488-2c25-75d1-b163-3ab4ab76b4b3" xlink:to="loc_us-gaap_AdditionalPaidInCapital_01a03488-2c25-7a93-89f2-df6a84f30db1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TreasuryStockValue_01a03488-2c25-7961-bb7a-801d8d28658b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TreasuryStockValue"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_01a03488-2c25-75d1-b163-3ab4ab76b4b3" xlink:to="loc_us-gaap_TreasuryStockValue_01a03488-2c25-7961-bb7a-801d8d28658b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_01a03488-2c25-711e-afed-d89c7744724d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashCurrent_01a03488-2c25-7bc1-b063-beb7e106c464" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestrictedCashCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_01a03488-2c25-711e-afed-d89c7744724d" xlink:to="loc_us-gaap_RestrictedCashCurrent_01a03488-2c25-7bc1-b063-beb7e106c464" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_01a03488-2c25-7898-9aca-8d08ebff404b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_01a03488-2c25-711e-afed-d89c7744724d" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_01a03488-2c25-7898-9aca-8d08ebff404b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_01a03488-2c25-7fe3-a424-0118dee58c7a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_01a03488-2c25-711e-afed-d89c7744724d" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_01a03488-2c25-7fe3-a424-0118dee58c7a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_01a03488-2c25-7ccc-a710-97ef7aa94ba0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryNet"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_01a03488-2c25-711e-afed-d89c7744724d" xlink:to="loc_us-gaap_InventoryNet_01a03488-2c25-7ccc-a710-97ef7aa94ba0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_01a03488-2c25-7413-aaee-376a678be120" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_01a03488-2c25-711e-afed-d89c7744724d" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_01a03488-2c25-7413-aaee-376a678be120" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxesReceivable_01a03488-2c25-7c0f-88ef-011065e71f34" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxesReceivable"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_01a03488-2c25-711e-afed-d89c7744724d" xlink:to="loc_us-gaap_IncomeTaxesReceivable_01a03488-2c25-7c0f-88ef-011065e71f34" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_01a03488-2c25-7c95-adb2-c19c58b18b7d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_01a03488-2c25-7dcb-9652-018ff5f56a30" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_01a03488-2c25-7c95-adb2-c19c58b18b7d" xlink:to="loc_us-gaap_Liabilities_01a03488-2c25-7dcb-9652-018ff5f56a30" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_01a03488-2c25-7525-a2e3-6a3e244bb3c1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_01a03488-2c25-7c95-adb2-c19c58b18b7d" xlink:to="loc_us-gaap_CommitmentsAndContingencies_01a03488-2c25-7525-a2e3-6a3e244bb3c1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_01a03488-2c25-74dc-9fd1-b708e667de38" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_StockholdersEquity"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_01a03488-2c25-7c95-adb2-c19c58b18b7d" xlink:to="loc_us-gaap_StockholdersEquity_01a03488-2c25-74dc-9fd1-b708e667de38" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_01a03488-2c25-700e-a3df-93a078359bfd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationsNoncurrent_01a03488-2c25-7a0a-bbfe-101ca6ac9498" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetRetirementObligationsNoncurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_01a03488-2c25-700e-a3df-93a078359bfd" xlink:to="loc_us-gaap_AssetRetirementObligationsNoncurrent_01a03488-2c25-7a0a-bbfe-101ca6ac9498" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_01a03488-2c25-7d27-baa0-274c5fff2f13" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_01a03488-2c25-700e-a3df-93a078359bfd" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_01a03488-2c25-7d27-baa0-274c5fff2f13" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredRentCreditNoncurrent_01a03488-2c25-78dc-bc69-718748bdba6a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredRentCreditNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_01a03488-2c25-700e-a3df-93a078359bfd" xlink:to="loc_us-gaap_DeferredRentCreditNoncurrent_01a03488-2c25-78dc-bc69-718748bdba6a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_01a03488-2c25-79b0-971a-28197bacd224" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_01a03488-2c25-700e-a3df-93a078359bfd" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_01a03488-2c25-79b0-971a-28197bacd224" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_01a03488-2c25-76ef-a669-a2d640b296fc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_01a03488-2c25-700e-a3df-93a078359bfd" xlink:to="loc_us-gaap_LiabilitiesCurrent_01a03488-2c25-76ef-a669-a2d640b296fc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_01a03488-2c25-7341-8006-4e9fb2d4cd9d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_01a03488-2c25-700e-a3df-93a078359bfd" xlink:to="loc_us-gaap_FinanceLeaseLiabilityNoncurrent_01a03488-2c25-7341-8006-4e9fb2d4cd9d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent_01a03488-2c25-711a-976a-7f643a25e86b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_01a03488-2c25-700e-a3df-93a078359bfd" xlink:to="loc_us-gaap_PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent_01a03488-2c25-711a-976a-7f643a25e86b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_01a03488-2c25-7479-ab9f-458d3845d3d3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_01a03488-2c25-700e-a3df-93a078359bfd" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_01a03488-2c25-7479-ab9f-458d3845d3d3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_01a03488-2c25-7208-985a-e87b38ad5934" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_01a03488-2c25-700e-a3df-93a078359bfd" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_01a03488-2c25-7208-985a-e87b38ad5934" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_01a03488-2c25-7072-996a-aace8715903e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_01a03488-2c25-72e4-86ed-67df38e6c856" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiabilityCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_01a03488-2c25-7072-996a-aace8715903e" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_01a03488-2c25-72e4-86ed-67df38e6c856" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableCurrent_01a03488-2c25-7784-8183-f7260ecd28b9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsPayableCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_01a03488-2c25-7072-996a-aace8715903e" xlink:to="loc_us-gaap_AccountsPayableCurrent_01a03488-2c25-7784-8183-f7260ecd28b9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FinanceLeaseLiabilityCurrent_01a03488-2c25-7535-8c9c-2810072ea0e5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FinanceLeaseLiabilityCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_01a03488-2c25-7072-996a-aace8715903e" xlink:to="loc_us-gaap_FinanceLeaseLiabilityCurrent_01a03488-2c25-7535-8c9c-2810072ea0e5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_01a03488-2c25-7781-aa2a-72f6ebe150f2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_01a03488-2c25-7072-996a-aace8715903e" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_01a03488-2c25-7781-aa2a-72f6ebe150f2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_01a03488-2c25-793a-9a14-ff0fbe1d4df9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_01a03488-2c25-7072-996a-aace8715903e" xlink:to="loc_us-gaap_AccruedLiabilitiesCurrent_01a03488-2c25-793a-9a14-ff0fbe1d4df9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedIncomeTaxesCurrent_01a03488-2c25-770a-9acd-c2dd2952b727" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedIncomeTaxesCurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_01a03488-2c25-7072-996a-aace8715903e" xlink:to="loc_us-gaap_AccruedIncomeTaxesCurrent_01a03488-2c25-770a-9acd-c2dd2952b727" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_01a03488-2c25-7cc3-b885-ea6088150d5f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_01a03488-2c25-7072-996a-aace8715903e" xlink:to="loc_us-gaap_LongTermDebtCurrent_01a03488-2c25-7cc3-b885-ea6088150d5f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_01a03488-2c25-7252-9660-a671e1fdc421" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_01a03488-2c25-7cb9-ab5a-aee170189805" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_01a03488-2c25-7252-9660-a671e1fdc421" xlink:to="loc_us-gaap_DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent_01a03488-2c25-7cb9-ab5a-aee170189805" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_01a03488-2c25-7d0f-9039-3f98ee98f53b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_01a03488-2c25-7252-9660-a671e1fdc421" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_01a03488-2c25-7d0f-9039-3f98ee98f53b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_01a03488-2c25-7dd5-984e-033145de8fef" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_01a03488-2c25-7252-9660-a671e1fdc421" xlink:to="loc_us-gaap_Goodwill_01a03488-2c25-7dd5-984e-033145de8fef" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_01a03488-2c25-7c9f-8f11-8a2bac6c1914" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_01a03488-2c25-7252-9660-a671e1fdc421" xlink:to="loc_us-gaap_AssetsCurrent_01a03488-2c25-7c9f-8f11-8a2bac6c1914" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxAssetsNet_01a03488-2c25-7cc9-b120-e07381a127b4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxAssetsNet"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_01a03488-2c25-7252-9660-a671e1fdc421" xlink:to="loc_us-gaap_DeferredIncomeTaxAssetsNet_01a03488-2c25-7cc9-b120-e07381a127b4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_01a03488-2c25-77ae-a345-21ee7797b926" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_01a03488-2c25-7252-9660-a671e1fdc421" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_01a03488-2c25-77ae-a345-21ee7797b926" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_01a03488-2c25-781a-9f29-051de2fa3615" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_01a03488-2c25-7252-9660-a671e1fdc421" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization_01a03488-2c25-781a-9f29-051de2fa3615" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_01a03488-2c25-73cd-8191-79270ab48979" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_01a03488-2c25-7252-9660-a671e1fdc421" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_01a03488-2c25-73cd-8191-79270ab48979" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://soterahealth.com/role/ConsolidatedStatementsofOperationsandComprehensiveIncome" xlink:type="simple" xlink:href="shc-20260930.xsd#ConsolidatedStatementsofOperationsandComprehensiveIncome"/>
  <link:calculationLink xlink:role="http://soterahealth.com/role/ConsolidatedStatementsofOperationsandComprehensiveIncome" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a03488-2c25-7107-91c0-be3c400ad260" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_01a03488-2c25-7b53-85ac-1ae414470271" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestIncomeExpenseNonoperatingNet"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a03488-2c25-7107-91c0-be3c400ad260" xlink:to="loc_us-gaap_InterestIncomeExpenseNonoperatingNet_01a03488-2c25-7b53-85ac-1ae414470271" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_01a03488-2c25-7803-8090-6608b1df5c3d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignCurrencyTransactionGainLossBeforeTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a03488-2c25-7107-91c0-be3c400ad260" xlink:to="loc_us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_01a03488-2c25-7803-8090-6608b1df5c3d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_01a03488-2c25-7c5c-baac-1a70d13b928f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a03488-2c25-7107-91c0-be3c400ad260" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_01a03488-2c25-7c5c-baac-1a70d13b928f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_shc_GainLossOnRefinancingOfDebt_01a03488-2c25-75a1-bfff-d283c0f96dfa" xlink:href="shc-20260930.xsd#shc_GainLossOnRefinancingOfDebt"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a03488-2c25-7107-91c0-be3c400ad260" xlink:to="loc_shc_GainLossOnRefinancingOfDebt_01a03488-2c25-75a1-bfff-d283c0f96dfa" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_01a03488-2c25-7d07-95b0-c01d8c5f73b4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a03488-2c25-7107-91c0-be3c400ad260" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_01a03488-2c25-7d07-95b0-c01d8c5f73b4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_shc_AmortizationOfIntangibleAssetsNonproduction_01a03488-2c25-7e09-9923-53d91225fbf9" xlink:href="shc-20260930.xsd#shc_AmortizationOfIntangibleAssetsNonproduction"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a03488-2c25-7107-91c0-be3c400ad260" xlink:to="loc_shc_AmortizationOfIntangibleAssetsNonproduction_01a03488-2c25-7e09-9923-53d91225fbf9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_shc_LitigationSettlementNonoperatingExpense_01a03488-2c25-7464-8b84-1dcf1b294504" xlink:href="shc-20260930.xsd#shc_LitigationSettlementNonoperatingExpense"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a03488-2c25-7107-91c0-be3c400ad260" xlink:to="loc_shc_LitigationSettlementNonoperatingExpense_01a03488-2c25-7464-8b84-1dcf1b294504" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_01a03488-2c25-7d10-8b0a-b9e0cb47dc76" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GrossProfit"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a03488-2c25-7107-91c0-be3c400ad260" xlink:to="loc_us-gaap_GrossProfit_01a03488-2c25-7d10-8b0a-b9e0cb47dc76" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_01a03488-2c25-790a-90da-1c3fad556bec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_01a03488-2c25-7313-8ecb-5d3c7a7a719c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_01a03488-2c25-790a-90da-1c3fad556bec" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_01a03488-2c25-7313-8ecb-5d3c7a7a719c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a03488-2c25-7479-90ad-7db30d209c91" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_01a03488-2c25-790a-90da-1c3fad556bec" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a03488-2c25-7479-90ad-7db30d209c91" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_01a03488-2c25-7ecb-9437-6ebad750cb16" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GrossProfit"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfRevenue_01a03488-2c25-7a83-b4cb-89f159501a04" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostOfRevenue"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_01a03488-2c25-7ecb-9437-6ebad750cb16" xlink:to="loc_us-gaap_CostOfRevenue_01a03488-2c25-7a83-b4cb-89f159501a04" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a03488-2c25-7a25-a63b-b2d1a07627f8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_01a03488-2c25-7ecb-9437-6ebad750cb16" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_01a03488-2c25-7a25-a63b-b2d1a07627f8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_01a03488-2c25-718b-938d-66cb9b8c7d3d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ComprehensiveIncomeNetOfTax"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_01a03488-2c25-7591-aba2-664071c4bd5e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_01a03488-2c25-718b-938d-66cb9b8c7d3d" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossCashFlowHedgeGainLossAfterReclassificationAndTax_01a03488-2c25-7591-aba2-664071c4bd5e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_01a03488-2c25-70c4-9cf1-f4552be6b223" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_01a03488-2c25-718b-938d-66cb9b8c7d3d" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_01a03488-2c25-70c4-9cf1-f4552be6b223" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_01a03488-2c25-72df-9548-e6e3a9afa20c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_01a03488-2c25-718b-938d-66cb9b8c7d3d" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax_01a03488-2c25-72df-9548-e6e3a9afa20c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_01a03488-2c25-7c2f-b83a-acc3273cb94e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_01a03488-2c25-718b-938d-66cb9b8c7d3d" xlink:to="loc_us-gaap_NetIncomeLoss_01a03488-2c25-7c2f-b83a-acc3273cb94e" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://soterahealth.com/role/ConsolidatedStatementsofCashFlows" xlink:type="simple" xlink:href="shc-20260930.xsd#ConsolidatedStatementsofCashFlows"/>
  <link:calculationLink xlink:role="http://soterahealth.com/role/ConsolidatedStatementsofCashFlows" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_01a03488-2c25-7fcd-b5c3-e4f10d949515" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_01a03488-2c25-7f4c-8318-a1221697ebf2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_01a03488-2c25-7fcd-b5c3-e4f10d949515" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_01a03488-2c25-7f4c-8318-a1221697ebf2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_01a03488-2c25-74ce-adf1-1346357c1b45" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsForProceedsFromOtherInvestingActivities"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_01a03488-2c25-7fcd-b5c3-e4f10d949515" xlink:to="loc_us-gaap_PaymentsForProceedsFromOtherInvestingActivities_01a03488-2c25-74ce-adf1-1346357c1b45" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_01a03488-2c25-7f70-b4bc-b4e288546138" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLongTermDebt_01a03488-2c25-7ed0-a876-b619923a4db9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfLongTermDebt"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_01a03488-2c25-7f70-b4bc-b4e288546138" xlink:to="loc_us-gaap_RepaymentsOfLongTermDebt_01a03488-2c25-7ed0-a876-b619923a4db9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_shc_PaymentsOfDebtIssuanceCostsAndDebtDiscount_01a03488-2c25-7a24-8e38-f3703ee7a2c1" xlink:href="shc-20260930.xsd#shc_PaymentsOfDebtIssuanceCostsAndDebtDiscount"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_01a03488-2c25-7f70-b4bc-b4e288546138" xlink:to="loc_shc_PaymentsOfDebtIssuanceCostsAndDebtDiscount_01a03488-2c25-7a24-8e38-f3703ee7a2c1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_01a03488-2c25-7d52-9cf3-056925f25901" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_01a03488-2c25-7f70-b4bc-b4e288546138" xlink:to="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_01a03488-2c25-7d52-9cf3-056925f25901" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_01a03488-2c25-784f-be2a-cec4495243f1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_01a03488-2c25-7f70-b4bc-b4e288546138" xlink:to="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_01a03488-2c25-784f-be2a-cec4495243f1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a03488-2c25-7b67-ab81-1e2fae249fbf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_01a03488-2c25-7663-bb15-68a0dd7dc2b8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a03488-2c25-7b67-ab81-1e2fae249fbf" xlink:to="loc_us-gaap_NetIncomeLoss_01a03488-2c25-7663-bb15-68a0dd7dc2b8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Depreciation_01a03488-2c25-7b09-91e4-1462721aa836" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Depreciation"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a03488-2c25-7b67-ab81-1e2fae249fbf" xlink:to="loc_us-gaap_Depreciation_01a03488-2c25-7b09-91e4-1462721aa836" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_01a03488-2c25-739a-bd3d-316630b4fcf4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AmortizationOfIntangibleAssets"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a03488-2c25-7b67-ab81-1e2fae249fbf" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_01a03488-2c25-739a-bd3d-316630b4fcf4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_shc_GainLossOnRefinancingOfDebt_01a03488-2c25-779a-b2f3-a878d2e2fb3a" xlink:href="shc-20260930.xsd#shc_GainLossOnRefinancingOfDebt"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a03488-2c25-7b67-ab81-1e2fae249fbf" xlink:to="loc_shc_GainLossOnRefinancingOfDebt_01a03488-2c25-779a-b2f3-a878d2e2fb3a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_01a03488-2c25-768a-81e1-c6d6777ac1b6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxExpenseBenefit"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a03488-2c25-7b67-ab81-1e2fae249fbf" xlink:to="loc_us-gaap_DeferredIncomeTaxExpenseBenefit_01a03488-2c25-768a-81e1-c6d6777ac1b6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_01a03488-2c25-70fb-bb9b-8a42a13d0a85" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensation"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a03488-2c25-7b67-ab81-1e2fae249fbf" xlink:to="loc_us-gaap_ShareBasedCompensation_01a03488-2c25-70fb-bb9b-8a42a13d0a85" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationAccretionExpense_01a03488-2c25-7305-a541-f18ba451ebfb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetRetirementObligationAccretionExpense"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a03488-2c25-7b67-ab81-1e2fae249fbf" xlink:to="loc_us-gaap_AssetRetirementObligationAccretionExpense_01a03488-2c25-7305-a541-f18ba451ebfb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ForeignCurrencyTransactionGainLossUnrealized_01a03488-2c25-7aa1-b675-b3d296c36e2d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ForeignCurrencyTransactionGainLossUnrealized"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a03488-2c25-7b67-ab81-1e2fae249fbf" xlink:to="loc_us-gaap_ForeignCurrencyTransactionGainLossUnrealized_01a03488-2c25-7aa1-b675-b3d296c36e2d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnrealizedGainLossOnDerivatives_01a03488-2c25-73d9-87bc-8b8b29e12b1a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnrealizedGainLossOnDerivatives"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a03488-2c25-7b67-ab81-1e2fae249fbf" xlink:to="loc_us-gaap_UnrealizedGainLossOnDerivatives_01a03488-2c25-73d9-87bc-8b8b29e12b1a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfFinancingCosts_01a03488-2c25-7e44-892e-7a88c321f078" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AmortizationOfFinancingCosts"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a03488-2c25-7b67-ab81-1e2fae249fbf" xlink:to="loc_us-gaap_AmortizationOfFinancingCosts_01a03488-2c25-7e44-892e-7a88c321f078" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNoncashIncomeExpense_01a03488-2c25-72cf-ba56-54d8e9fa7de3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherNoncashIncomeExpense"/>
    <link:calculationArc order="11" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a03488-2c25-7b67-ab81-1e2fae249fbf" xlink:to="loc_us-gaap_OtherNoncashIncomeExpense_01a03488-2c25-72cf-ba56-54d8e9fa7de3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_01a03488-2c25-7767-b15e-c57b8761afb9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <link:calculationArc order="12" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a03488-2c25-7b67-ab81-1e2fae249fbf" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_01a03488-2c25-7767-b15e-c57b8761afb9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInInventories_01a03488-2c25-71e3-b4a2-83312bf3c0cf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInInventories"/>
    <link:calculationArc order="13" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a03488-2c25-7b67-ab81-1e2fae249fbf" xlink:to="loc_us-gaap_IncreaseDecreaseInInventories_01a03488-2c25-71e3-b4a2-83312bf3c0cf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherCurrentAssets_01a03488-2c25-7499-97bb-6ebd9b6e49f0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInOtherCurrentAssets"/>
    <link:calculationArc order="14" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a03488-2c25-7b67-ab81-1e2fae249fbf" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherCurrentAssets_01a03488-2c25-7499-97bb-6ebd9b6e49f0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayable_01a03488-2c25-7228-92b4-adc494a3d987" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccountsPayable"/>
    <link:calculationArc order="15" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a03488-2c25-7b67-ab81-1e2fae249fbf" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayable_01a03488-2c25-7228-92b4-adc494a3d987" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_01a03488-2c25-7943-957a-e6942ab8e453" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccruedLiabilities"/>
    <link:calculationArc order="16" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a03488-2c25-7b67-ab81-1e2fae249fbf" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedLiabilities_01a03488-2c25-7943-957a-e6942ab8e453" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_shc_IncreaseDecreaseInEstimatedLitigationLiability_01a03488-2c25-754f-b89c-f0289554651a" xlink:href="shc-20260930.xsd#shc_IncreaseDecreaseInEstimatedLitigationLiability"/>
    <link:calculationArc order="17" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a03488-2c25-7b67-ab81-1e2fae249fbf" xlink:to="loc_shc_IncreaseDecreaseInEstimatedLitigationLiability_01a03488-2c25-754f-b89c-f0289554651a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_01a03488-2c25-7f61-85c5-2efbe7a589e8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable"/>
    <link:calculationArc order="18" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a03488-2c25-7b67-ab81-1e2fae249fbf" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_01a03488-2c25-7f61-85c5-2efbe7a589e8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities_01a03488-2c25-7fdd-94f7-78db44b26ba0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities"/>
    <link:calculationArc order="19" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a03488-2c25-7b67-ab81-1e2fae249fbf" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities_01a03488-2c25-7fdd-94f7-78db44b26ba0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentAssets_01a03488-2c25-71b4-a5c5-933629d04b9d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInOtherNoncurrentAssets"/>
    <link:calculationArc order="20" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a03488-2c25-7b67-ab81-1e2fae249fbf" xlink:to="loc_us-gaap_IncreaseDecreaseInOtherNoncurrentAssets_01a03488-2c25-71b4-a5c5-933629d04b9d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_01a03488-2c25-71f9-9120-0a278323e8f2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a03488-2c25-7886-8135-4ca3c0ed7a74" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_01a03488-2c25-71f9-9120-0a278323e8f2" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_01a03488-2c25-7886-8135-4ca3c0ed7a74" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_01a03488-2c25-7985-8a5c-536da2c48981" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_01a03488-2c25-71f9-9120-0a278323e8f2" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_01a03488-2c25-7985-8a5c-536da2c48981" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_01a03488-2c25-7215-882d-fb931a96a4ab" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_01a03488-2c25-71f9-9120-0a278323e8f2" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_01a03488-2c25-7215-882d-fb931a96a4ab" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_01a03488-2c25-7f97-934a-b26b8cc80cd6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_01a03488-2c25-71f9-9120-0a278323e8f2" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_01a03488-2c25-7f97-934a-b26b8cc80cd6" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://soterahealth.com/role/InventoriesDetails" xlink:type="simple" xlink:href="shc-20260930.xsd#InventoriesDetails"/>
  <link:calculationLink xlink:role="http://soterahealth.com/role/InventoriesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryNet_01a03488-2cd4-7538-85fa-ac855bb733b5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryGross_01a03488-2cd4-7772-ac9d-f4a4361955f5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_01a03488-2cd4-7538-85fa-ac855bb733b5" xlink:to="loc_us-gaap_InventoryGross_01a03488-2cd4-7772-ac9d-f4a4361955f5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryAdjustments_01a03488-2cd4-7319-853c-aa4f29022dd3" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryAdjustments"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryNet_01a03488-2cd4-7538-85fa-ac855bb733b5" xlink:to="loc_us-gaap_InventoryAdjustments_01a03488-2cd4-7319-853c-aa4f29022dd3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryGross_01a03488-2cd4-7dbe-892c-93237c15ab3c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryGross"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryFinishedGoods_01a03488-2cd4-7173-aa5f-2fa915349d23" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryFinishedGoods"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryGross_01a03488-2cd4-7dbe-892c-93237c15ab3c" xlink:to="loc_us-gaap_InventoryFinishedGoods_01a03488-2cd4-7173-aa5f-2fa915349d23" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryWorkInProcess_01a03488-2cd4-7e91-b1c3-9692eb0ddb82" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryWorkInProcess"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryGross_01a03488-2cd4-7dbe-892c-93237c15ab3c" xlink:to="loc_us-gaap_InventoryWorkInProcess_01a03488-2cd4-7e91-b1c3-9692eb0ddb82" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InventoryRawMaterialsAndSupplies_01a03488-2cd4-7fdf-9ed6-43265bbe6e90" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InventoryRawMaterialsAndSupplies"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_InventoryGross_01a03488-2cd4-7dbe-892c-93237c15ab3c" xlink:to="loc_us-gaap_InventoryRawMaterialsAndSupplies_01a03488-2cd4-7fdf-9ed6-43265bbe6e90" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://soterahealth.com/role/PrepaidExpensesandOtherCurrentAssetsDetails" xlink:type="simple" xlink:href="shc-20260930.xsd#PrepaidExpensesandOtherCurrentAssetsDetails"/>
  <link:calculationLink xlink:role="http://soterahealth.com/role/PrepaidExpensesandOtherCurrentAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_01a03488-2cd4-774f-9067-a2c346541032" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ValueAddedTaxReceivableCurrent_01a03488-2cd4-7154-9f55-a53928e942d0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ValueAddedTaxReceivableCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_01a03488-2cd4-774f-9067-a2c346541032" xlink:to="loc_us-gaap_ValueAddedTaxReceivableCurrent_01a03488-2cd4-7154-9f55-a53928e942d0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_shc_PrepaidSoftwareLicensingCurrent_01a03488-2cd4-7d0e-801e-a4fdb0ddccab" xlink:href="shc-20260930.xsd#shc_PrepaidSoftwareLicensingCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_01a03488-2cd4-774f-9067-a2c346541032" xlink:to="loc_shc_PrepaidSoftwareLicensingCurrent_01a03488-2cd4-7d0e-801e-a4fdb0ddccab" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidInsurance_01a03488-2cd4-733e-b510-d377bb93deda" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PrepaidInsurance"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_01a03488-2cd4-774f-9067-a2c346541032" xlink:to="loc_us-gaap_PrepaidInsurance_01a03488-2cd4-733e-b510-d377bb93deda" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidRent_01a03488-2cd4-7166-8a19-2af53b12a279" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PrepaidRent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_01a03488-2cd4-774f-9067-a2c346541032" xlink:to="loc_us-gaap_PrepaidRent_01a03488-2cd4-7166-8a19-2af53b12a279" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerAssetNetCurrent_01a03488-2cd4-7da8-9e2e-fb0c252a8c45" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerAssetNetCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_01a03488-2cd4-774f-9067-a2c346541032" xlink:to="loc_us-gaap_ContractWithCustomerAssetNetCurrent_01a03488-2cd4-7da8-9e2e-fb0c252a8c45" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidTaxes_01a03488-2cd4-7cfb-9467-7eb9e069131a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PrepaidTaxes"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_01a03488-2cd4-774f-9067-a2c346541032" xlink:to="loc_us-gaap_PrepaidTaxes_01a03488-2cd4-7cfb-9467-7eb9e069131a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_shc_PrepaidMaintenanceContractsCurrent_01a03488-2cd4-719a-ae67-619584a7d99a" xlink:href="shc-20260930.xsd#shc_PrepaidMaintenanceContractsCurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_01a03488-2cd4-774f-9067-a2c346541032" xlink:to="loc_shc_PrepaidMaintenanceContractsCurrent_01a03488-2cd4-719a-ae67-619584a7d99a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Supplies_01a03488-2cd4-7eb6-9a76-4a421fef6b69" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Supplies"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_01a03488-2cd4-774f-9067-a2c346541032" xlink:to="loc_us-gaap_Supplies_01a03488-2cd4-7eb6-9a76-4a421fef6b69" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsCurrent_01a03488-2cd4-77f2-9447-1398e0db2982" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsCurrent"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_01a03488-2cd4-774f-9067-a2c346541032" xlink:to="loc_us-gaap_OtherAssetsCurrent_01a03488-2cd4-77f2-9447-1398e0db2982" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepositsAssetsCurrent_01a03488-2cd4-7f26-a117-677e28d3128d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepositsAssetsCurrent"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_01a03488-2cd4-774f-9067-a2c346541032" xlink:to="loc_us-gaap_DepositsAssetsCurrent_01a03488-2cd4-7f26-a117-677e28d3128d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeAsset_01a03488-2cd4-7f4c-bd4a-945d43cc4f1d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeAsset"/>
    <link:calculationArc order="11" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_01a03488-2cd4-774f-9067-a2c346541032" xlink:to="loc_us-gaap_EmbeddedDerivativeFairValueOfEmbeddedDerivativeAsset_01a03488-2cd4-7f4c-bd4a-945d43cc4f1d" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://soterahealth.com/role/GoodwillandOtherIntangibleAssetsScheduleofAcquiredFiniteLivedandIndefiniteLivedIntangibleAssetsDetails" xlink:type="simple" xlink:href="shc-20260930.xsd#GoodwillandOtherIntangibleAssetsScheduleofAcquiredFiniteLivedandIndefiniteLivedIntangibleAssetsDetails"/>
  <link:calculationLink xlink:role="http://soterahealth.com/role/GoodwillandOtherIntangibleAssetsScheduleofAcquiredFiniteLivedandIndefiniteLivedIntangibleAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_01a03488-2cd4-7907-8121-ed90006c544f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IntangibleAssetsGrossExcludingGoodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsGross_01a03488-2cd4-7132-a93e-af4de63c422d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsGross"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_01a03488-2cd4-7907-8121-ed90006c544f" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_01a03488-2cd4-7132-a93e-af4de63c422d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_01a03488-2cd4-76dc-931f-3aa7c8d48461" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_01a03488-2cd4-7907-8121-ed90006c544f" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_01a03488-2cd4-76dc-931f-3aa7c8d48461" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://soterahealth.com/role/GoodwillandOtherIntangibleAssetsScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseDetails" xlink:type="simple" xlink:href="shc-20260930.xsd#GoodwillandOtherIntangibleAssetsScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseDetails"/>
  <link:calculationLink xlink:role="http://soterahealth.com/role/GoodwillandOtherIntangibleAssetsScheduleofFiniteLivedIntangibleAssetsFutureAmortizationExpenseDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_01a03488-2cd4-7130-bde0-26e67529341e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_shc_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour_01a03488-2cd4-7d6c-bd9b-385dc21a64b3" xlink:href="shc-20260930.xsd#shc_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_01a03488-2cd4-7130-bde0-26e67529341e" xlink:to="loc_shc_FiniteLivedIntangibleAssetExpectedAmortizationAfterYearFour_01a03488-2cd4-7d6c-bd9b-385dc21a64b3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_01a03488-2cd4-7457-ae9d-496d4323e659" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_01a03488-2cd4-7130-bde0-26e67529341e" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo_01a03488-2cd4-7457-ae9d-496d4323e659" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_01a03488-2cd4-73d4-84c2-f3bc305c0964" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_01a03488-2cd4-7130-bde0-26e67529341e" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree_01a03488-2cd4-73d4-84c2-f3bc305c0964" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_01a03488-2cd4-7412-bb31-4b42275a1347" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_01a03488-2cd4-7130-bde0-26e67529341e" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour_01a03488-2cd4-7412-bb31-4b42275a1347" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_01a03488-2cd4-74e3-97f4-7e92a9407919" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_01a03488-2cd4-7130-bde0-26e67529341e" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseRemainderOfFiscalYear_01a03488-2cd4-74e3-97f4-7e92a9407919" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_01a03488-2cd4-730d-bcc8-86300d0bfffd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_01a03488-2cd4-7130-bde0-26e67529341e" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths_01a03488-2cd4-730d-bcc8-86300d0bfffd" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://soterahealth.com/role/AccruedLiabilitiesDetails" xlink:type="simple" xlink:href="shc-20260930.xsd#AccruedLiabilitiesDetails"/>
  <link:calculationLink xlink:role="http://soterahealth.com/role/AccruedLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedLiabilitiesCurrent_01a03488-2cd4-78db-88c6-2eed1078c5ae" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedLiabilitiesCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedUtilitiesCurrent_01a03488-2cd4-73ac-b657-e988e1935ee8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedUtilitiesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_01a03488-2cd4-78db-88c6-2eed1078c5ae" xlink:to="loc_us-gaap_AccruedUtilitiesCurrent_01a03488-2cd4-73ac-b657-e988e1935ee8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DerivativeLiabilitiesCurrent_01a03488-2cd4-7b96-ac9c-f7dd8b289d0e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DerivativeLiabilitiesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_01a03488-2cd4-78db-88c6-2eed1078c5ae" xlink:to="loc_us-gaap_DerivativeLiabilitiesCurrent_01a03488-2cd4-7b96-ac9c-f7dd8b289d0e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TaxesPayableCurrent_01a03488-2cd4-7f0f-a9e2-8f857f6bf19f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_TaxesPayableCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_01a03488-2cd4-78db-88c6-2eed1078c5ae" xlink:to="loc_us-gaap_TaxesPayableCurrent_01a03488-2cd4-7f0f-a9e2-8f857f6bf19f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedProfessionalFeesCurrent_01a03488-2cd4-7556-9958-d6974f26f8ca" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedProfessionalFeesCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_01a03488-2cd4-78db-88c6-2eed1078c5ae" xlink:to="loc_us-gaap_AccruedProfessionalFeesCurrent_01a03488-2cd4-7556-9958-d6974f26f8ca" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_01a03488-2cd4-7ed5-89db-96e33e1c2e0f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_01a03488-2cd4-78db-88c6-2eed1078c5ae" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_01a03488-2cd4-7ed5-89db-96e33e1c2e0f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAccruedLiabilitiesCurrent_01a03488-2cd4-7197-8352-fea00b733506" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAccruedLiabilitiesCurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_01a03488-2cd4-78db-88c6-2eed1078c5ae" xlink:to="loc_us-gaap_OtherAccruedLiabilitiesCurrent_01a03488-2cd4-7197-8352-fea00b733506" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccruedInsuranceCurrent_01a03488-2cd4-7240-a98b-32bb7e4bcb10" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccruedInsuranceCurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_01a03488-2cd4-78db-88c6-2eed1078c5ae" xlink:to="loc_us-gaap_AccruedInsuranceCurrent_01a03488-2cd4-7240-a98b-32bb7e4bcb10" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_shc_AccruedInterestExpenseCurrent_01a03488-2cd4-7059-810d-bb28ca788dd3" xlink:href="shc-20260930.xsd#shc_AccruedInterestExpenseCurrent"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_01a03488-2cd4-78db-88c6-2eed1078c5ae" xlink:to="loc_shc_AccruedInterestExpenseCurrent_01a03488-2cd4-7059-810d-bb28ca788dd3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_shc_LitigationSettlementReserveCurrent_01a03488-2cd4-7e0c-a2b9-c0470513279c" xlink:href="shc-20260930.xsd#shc_LitigationSettlementReserveCurrent"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccruedLiabilitiesCurrent_01a03488-2cd4-78db-88c6-2eed1078c5ae" xlink:to="loc_shc_LitigationSettlementReserveCurrent_01a03488-2cd4-7e0c-a2b9-c0470513279c" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://soterahealth.com/role/LongTermDebtScheduleofLongtermDebtInstrumentsDetails" xlink:type="simple" xlink:href="shc-20260930.xsd#LongTermDebtScheduleofLongtermDebtInstrumentsDetails"/>
  <link:calculationLink xlink:role="http://soterahealth.com/role/LongTermDebtScheduleofLongtermDebtInstrumentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_01a03488-2cd4-7d48-afa5-a02c92098124" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscount_01a03488-2cd4-7ff7-b39d-e0c6797ec651" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentUnamortizedDiscount"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtNoncurrent_01a03488-2cd4-7d48-afa5-a02c92098124" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscount_01a03488-2cd4-7ff7-b39d-e0c6797ec651" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_01a03488-2cd4-731c-8371-2c322cf0c9d7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredFinanceCostsNet"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtNoncurrent_01a03488-2cd4-7d48-afa5-a02c92098124" xlink:to="loc_us-gaap_DeferredFinanceCostsNet_01a03488-2cd4-731c-8371-2c322cf0c9d7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_shc_LongTermDebtGrossNoncurrent_01a03488-2cd4-7923-826f-e2bfa5bed856" xlink:href="shc-20260930.xsd#shc_LongTermDebtGrossNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebtNoncurrent_01a03488-2cd4-7d48-afa5-a02c92098124" xlink:to="loc_shc_LongTermDebtGrossNoncurrent_01a03488-2cd4-7923-826f-e2bfa5bed856" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_01a03488-2cd4-7d85-9bb2-f5910b4b917b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebt"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtCurrent_01a03488-2cd4-7beb-b358-fc1a85cc0594" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_01a03488-2cd4-7d85-9bb2-f5910b4b917b" xlink:to="loc_us-gaap_LongTermDebtCurrent_01a03488-2cd4-7beb-b358-fc1a85cc0594" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_01a03488-2cd4-779c-a3c3-f04beb1887a0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_01a03488-2cd4-7d85-9bb2-f5910b4b917b" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_01a03488-2cd4-779c-a3c3-f04beb1887a0" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://soterahealth.com/role/EmployeeBenefitsDetails" xlink:type="simple" xlink:href="shc-20260930.xsd#EmployeeBenefitsDetails"/>
  <link:calculationLink xlink:role="http://soterahealth.com/role/EmployeeBenefitsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_01a03488-2cd4-7743-9959-e09c569d2edf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanServiceCost_01a03488-2cd4-7ffe-b83f-173321a0fb8b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanServiceCost"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_01a03488-2cd4-7743-9959-e09c569d2edf" xlink:to="loc_us-gaap_DefinedBenefitPlanServiceCost_01a03488-2cd4-7ffe-b83f-173321a0fb8b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_01a03488-2cd4-7520-b6cb-64d00c3ef23c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_01a03488-2cd4-7743-9959-e09c569d2edf" xlink:to="loc_us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses_01a03488-2cd4-7520-b6cb-64d00c3ef23c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanInterestCost_01a03488-2cd4-743a-b71f-ea1dc24bbe54" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanInterestCost"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_01a03488-2cd4-7743-9959-e09c569d2edf" xlink:to="loc_us-gaap_DefinedBenefitPlanInterestCost_01a03488-2cd4-743a-b71f-ea1dc24bbe54" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_01a03488-2cd4-7130-896d-b6e6e86a11d4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost_01a03488-2cd4-7743-9959-e09c569d2edf" xlink:to="loc_us-gaap_DefinedBenefitPlanExpectedReturnOnPlanAssets_01a03488-2cd4-7130-896d-b6e6e86a11d4" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://soterahealth.com/role/OtherComprehensiveIncomeLossDetails" xlink:type="simple" xlink:href="shc-20260930.xsd#OtherComprehensiveIncomeLossDetails"/>
  <link:calculationLink xlink:role="http://soterahealth.com/role/OtherComprehensiveIncomeLossDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_01a03488-2cd4-7b88-a1a1-31c8c5790086" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent_01a03488-2cd4-7e0c-bfe0-445a452f9ecf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_01a03488-2cd4-7b88-a1a1-31c8c5790086" xlink:to="loc_us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent_01a03488-2cd4-7e0c-bfe0-445a452f9ecf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent_01a03488-2cd4-7ef5-b1be-8ca47a50f2c6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_01a03488-2cd4-7b88-a1a1-31c8c5790086" xlink:to="loc_us-gaap_OciBeforeReclassificationsNetOfTaxAttributableToParent_01a03488-2cd4-7ef5-b1be-8ca47a50f2c6" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://soterahealth.com/role/EarningsPerShareDetails" xlink:type="simple" xlink:href="shc-20260930.xsd#EarningsPerShareDetails"/>
  <link:calculationLink xlink:role="http://soterahealth.com/role/EarningsPerShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_01a03488-2cd4-77d4-887c-b257feed8f2d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_01a03488-2cd4-75d1-a718-74b1e1cab077" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_01a03488-2cd4-77d4-887c-b257feed8f2d" xlink:to="loc_us-gaap_ProfitLoss_01a03488-2cd4-75d1-a718-74b1e1cab077" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted_01a03488-2cd4-7b61-abc2-ff11bf7d4fd4" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted_01a03488-2cd4-77d4-887c-b257feed8f2d" xlink:to="loc_us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesDiluted_01a03488-2cd4-7b61-abc2-ff11bf7d4fd4" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_01a03488-2cd4-7dff-bb13-5ef3c664fdfc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic_01a03488-2cd4-7f7b-8d9f-71d76916ff8c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_01a03488-2cd4-7dff-bb13-5ef3c664fdfc" xlink:to="loc_us-gaap_UndistributedEarningsLossAllocatedToParticipatingSecuritiesBasic_01a03488-2cd4-7f7b-8d9f-71d76916ff8c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_01a03488-2cd4-7571-b1ef-10bbb39b4780" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProfitLoss"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_01a03488-2cd4-7dff-bb13-5ef3c664fdfc" xlink:to="loc_us-gaap_ProfitLoss_01a03488-2cd4-7571-b1ef-10bbb39b4780" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_01a03488-2cd4-7326-9f83-2eba8d3a2711" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_01a03488-2cd4-734a-9d7e-2a1e8aa69a34" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_01a03488-2cd4-7326-9f83-2eba8d3a2711" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_01a03488-2cd4-734a-9d7e-2a1e8aa69a34" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_01a03488-2cd4-7e02-b785-8ec9d838a309" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_01a03488-2cd4-7326-9f83-2eba8d3a2711" xlink:to="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_01a03488-2cd4-7e02-b785-8ec9d838a309" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://soterahealth.com/role/SegmentInformationScheduleofReconciliationofOperatingProfitLossfromSegmentstoConsolidatedDetails" xlink:type="simple" xlink:href="shc-20260930.xsd#SegmentInformationScheduleofReconciliationofOperatingProfitLossfromSegmentstoConsolidatedDetails"/>
  <link:calculationLink xlink:role="http://soterahealth.com/role/SegmentInformationScheduleofReconciliationofOperatingProfitLossfromSegmentstoConsolidatedDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a03488-2d78-7c6e-9691-95db38597ae5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_01a03488-2d78-7eee-b298-dc6c973f02d5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a03488-2d78-7c6e-9691-95db38597ae5" xlink:to="loc_us-gaap_OperatingIncomeLoss_01a03488-2d78-7eee-b298-dc6c973f02d5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpense_01a03488-2d78-74c5-920c-34fe50a19c17" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpense"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a03488-2d78-7c6e-9691-95db38597ae5" xlink:to="loc_us-gaap_InterestExpense_01a03488-2d78-74c5-920c-34fe50a19c17" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_01a03488-2d78-784f-80bf-31ba97fe914d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a03488-2d78-7c6e-9691-95db38597ae5" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_01a03488-2d78-784f-80bf-31ba97fe914d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_01a03488-2d78-72f9-96d7-a74fba886ed0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ShareBasedCompensation"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a03488-2d78-7c6e-9691-95db38597ae5" xlink:to="loc_us-gaap_ShareBasedCompensation_01a03488-2d78-72f9-96d7-a74fba886ed0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_shc_GainLossOnRefinancingOfDebt_01a03488-2d78-7c77-adc6-08ebb0024d00" xlink:href="shc-20260930.xsd#shc_GainLossOnRefinancingOfDebt"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a03488-2d78-7c6e-9691-95db38597ae5" xlink:to="loc_shc_GainLossOnRefinancingOfDebt_01a03488-2d78-7c77-adc6-08ebb0024d00" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_shc_ForeignCurrencyGainLossAndGainLossOnEmbeddedDerivative_01a03488-2d78-726d-9a60-d8e93e97798f" xlink:href="shc-20260930.xsd#shc_ForeignCurrencyGainLossAndGainLossOnEmbeddedDerivative"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a03488-2d78-7c6e-9691-95db38597ae5" xlink:to="loc_shc_ForeignCurrencyGainLossAndGainLossOnEmbeddedDerivative_01a03488-2d78-726d-9a60-d8e93e97798f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherRestructuringCosts_01a03488-2d78-74c1-bb7f-51358b4a59e6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherRestructuringCosts"/>
    <link:calculationArc order="7" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a03488-2d78-7c6e-9691-95db38597ae5" xlink:to="loc_us-gaap_OtherRestructuringCosts_01a03488-2d78-74c1-bb7f-51358b4a59e6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LitigationSettlementExpense_01a03488-2d78-7b47-a6fd-c51bb8730a41" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LitigationSettlementExpense"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a03488-2d78-7c6e-9691-95db38597ae5" xlink:to="loc_us-gaap_LitigationSettlementExpense_01a03488-2d78-7b47-a6fd-c51bb8730a41" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GainLossRelatedToLitigationSettlement_01a03488-2d78-7292-a15d-08e8e3227305" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GainLossRelatedToLitigationSettlement"/>
    <link:calculationArc order="9" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a03488-2d78-7c6e-9691-95db38597ae5" xlink:to="loc_us-gaap_GainLossRelatedToLitigationSettlement_01a03488-2d78-7292-a15d-08e8e3227305" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetRetirementObligationAccretionExpense_01a03488-2d78-7314-b65a-46fde690c6e7" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetRetirementObligationAccretionExpense"/>
    <link:calculationArc order="10" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_01a03488-2d78-7c6e-9691-95db38597ae5" xlink:to="loc_us-gaap_AssetRetirementObligationAccretionExpense_01a03488-2d78-7314-b65a-46fde690c6e7" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
