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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019e424d-cd47-7a2a-9fc3-3ce3d0b51137,g:bcd45968-6836-44c1-97bf-5b4444c765b9-->
<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://www.fticonsulting.com/role/CondensedConsolidatedBalanceSheets" xlink:type="simple" xlink:href="fcn-20260630.xsd#CondensedConsolidatedBalanceSheets"/>
  <link:calculationLink xlink:role="http://www.fticonsulting.com/role/CondensedConsolidatedBalanceSheets" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_019e424d-cdf7-74a8-bfad-7a2c520f2ac5" 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_019e424d-cdf7-7137-a356-6728597bedb2" 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_019e424d-cdf7-74a8-bfad-7a2c520f2ac5" xlink:to="loc_us-gaap_Liabilities_019e424d-cdf7-7137-a356-6728597bedb2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_019e424d-cdf7-7771-a2c2-450de70de590" 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_019e424d-cdf7-74a8-bfad-7a2c520f2ac5" xlink:to="loc_us-gaap_CommitmentsAndContingencies_019e424d-cdf7-7771-a2c2-450de70de590" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019e424d-cdf7-7562-964a-e81eccd21c54" 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_019e424d-cdf7-74a8-bfad-7a2c520f2ac5" xlink:to="loc_us-gaap_StockholdersEquity_019e424d-cdf7-7562-964a-e81eccd21c54" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_019e424d-cdf7-7c6d-b74a-a72f4d5b660f" 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_AssetsCurrent_019e424d-cdf7-77a3-83e2-85b5460d78c6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AssetsCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019e424d-cdf7-7c6d-b74a-a72f4d5b660f" xlink:to="loc_us-gaap_AssetsCurrent_019e424d-cdf7-77a3-83e2-85b5460d78c6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PropertyPlantAndEquipmentNet_019e424d-cdf7-70e8-a820-0ad6f31e9382" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PropertyPlantAndEquipmentNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019e424d-cdf7-7c6d-b74a-a72f4d5b660f" xlink:to="loc_us-gaap_PropertyPlantAndEquipmentNet_019e424d-cdf7-70e8-a820-0ad6f31e9382" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_019e424d-cdf7-7b0d-b656-f4768d499c34" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019e424d-cdf7-7c6d-b74a-a72f4d5b660f" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_019e424d-cdf7-7b0d-b656-f4768d499c34" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Goodwill_019e424d-cdf7-7e2e-a7d2-d376485fff71" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_Goodwill"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019e424d-cdf7-7c6d-b74a-a72f4d5b660f" xlink:to="loc_us-gaap_Goodwill_019e424d-cdf7-7e2e-a7d2-d376485fff71" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_019e424d-cdf7-797b-97f5-e5ac9e926a2e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019e424d-cdf7-7c6d-b74a-a72f4d5b660f" xlink:to="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_019e424d-cdf7-797b-97f5-e5ac9e926a2e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesAndLoansReceivableNetNoncurrent_019e424d-cdf7-79af-9361-c172ecd6fbeb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesAndLoansReceivableNetNoncurrent"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019e424d-cdf7-7c6d-b74a-a72f4d5b660f" xlink:to="loc_us-gaap_NotesAndLoansReceivableNetNoncurrent_019e424d-cdf7-79af-9361-c172ecd6fbeb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssetsNoncurrent_019e424d-cdf7-74f0-9b96-49c954294bec" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherAssetsNoncurrent"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_019e424d-cdf7-7c6d-b74a-a72f4d5b660f" xlink:to="loc_us-gaap_OtherAssetsNoncurrent_019e424d-cdf7-74f0-9b96-49c954294bec" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AssetsCurrent_019e424d-cdf7-7cc1-b687-fad5e24cf50d" 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_CashAndCashEquivalentsAtCarryingValue_019e424d-cdf7-7b73-9bbc-290dba6a3ef5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019e424d-cdf7-7cc1-b687-fad5e24cf50d" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_019e424d-cdf7-7b73-9bbc-290dba6a3ef5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_019e424d-cdf7-7648-b588-a50982d00395" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019e424d-cdf7-7cc1-b687-fad5e24cf50d" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_019e424d-cdf7-7648-b588-a50982d00395" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NotesAndLoansReceivableNetCurrent_019e424d-cdf7-77ee-b7c5-85d5722bf116" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NotesAndLoansReceivableNetCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019e424d-cdf7-7cc1-b687-fad5e24cf50d" xlink:to="loc_us-gaap_NotesAndLoansReceivableNetCurrent_019e424d-cdf7-77ee-b7c5-85d5722bf116" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_019e424d-cdf7-7267-b2cf-a664ff74d876" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PrepaidExpenseAndOtherAssetsCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AssetsCurrent_019e424d-cdf7-7cc1-b687-fad5e24cf50d" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssetsCurrent_019e424d-cdf7-7267-b2cf-a664ff74d876" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesCurrent_019e424d-cdf7-7293-8452-54bad284f931" 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_AccountsPayableAndAccruedLiabilitiesCurrent_019e424d-cdf7-76b8-a035-c05f053f7d27" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019e424d-cdf7-7293-8452-54bad284f931" xlink:to="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_019e424d-cdf7-76b8-a035-c05f053f7d27" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_019e424d-cdf7-7e35-9afa-b47631a7e18a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeRelatedLiabilitiesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019e424d-cdf7-7293-8452-54bad284f931" xlink:to="loc_us-gaap_EmployeeRelatedLiabilitiesCurrent_019e424d-cdf7-7e35-9afa-b47631a7e18a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ContractWithCustomerLiabilityCurrent_019e424d-cdf7-7627-b481-1c276ba4189c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ContractWithCustomerLiabilityCurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesCurrent_019e424d-cdf7-7293-8452-54bad284f931" xlink:to="loc_us-gaap_ContractWithCustomerLiabilityCurrent_019e424d-cdf7-7627-b481-1c276ba4189c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_019e424d-cdf7-75ed-bf4a-d99bf9d3c227" 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_PreferredStockValue_019e424d-cdf7-7790-aa93-f0198af4fdf0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PreferredStockValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019e424d-cdf7-75ed-bf4a-d99bf9d3c227" xlink:to="loc_us-gaap_PreferredStockValue_019e424d-cdf7-7790-aa93-f0198af4fdf0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_019e424d-cdf7-7d97-9961-8f24ce93fd42" 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_019e424d-cdf7-75ed-bf4a-d99bf9d3c227" xlink:to="loc_us-gaap_CommonStockValue_019e424d-cdf7-7d97-9961-8f24ce93fd42" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapitalCommonStock_019e424d-cdf7-7b55-9dd3-51be73222f7c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdditionalPaidInCapitalCommonStock"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019e424d-cdf7-75ed-bf4a-d99bf9d3c227" xlink:to="loc_us-gaap_AdditionalPaidInCapitalCommonStock_019e424d-cdf7-7b55-9dd3-51be73222f7c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019e424d-cdf7-74b6-bdd4-7cbdda5915b9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019e424d-cdf7-75ed-bf4a-d99bf9d3c227" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_019e424d-cdf7-74b6-bdd4-7cbdda5915b9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_019e424d-cdf7-7761-9f71-12d452131669" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_019e424d-cdf7-75ed-bf4a-d99bf9d3c227" xlink:to="loc_us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_019e424d-cdf7-7761-9f71-12d452131669" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_019e424d-cdf7-79b3-b2d0-80f2a8b6b6ec" 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_LiabilitiesCurrent_019e424d-cdf7-7e48-8609-3261943e264e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LiabilitiesCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019e424d-cdf7-79b3-b2d0-80f2a8b6b6ec" xlink:to="loc_us-gaap_LiabilitiesCurrent_019e424d-cdf7-7e48-8609-3261943e264e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_019e424d-cdf7-7270-8b25-242dfdcdf257" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019e424d-cdf7-79b3-b2d0-80f2a8b6b6ec" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_019e424d-cdf7-7270-8b25-242dfdcdf257" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_019e424d-cdf7-73fd-b7b4-42927814140e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DeferredIncomeTaxLiabilitiesNet"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019e424d-cdf7-79b3-b2d0-80f2a8b6b6ec" xlink:to="loc_us-gaap_DeferredIncomeTaxLiabilitiesNet_019e424d-cdf7-73fd-b7b4-42927814140e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherLiabilitiesNoncurrent_019e424d-cdf7-74dd-958e-d422c15a8297" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherLiabilitiesNoncurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019e424d-cdf7-79b3-b2d0-80f2a8b6b6ec" xlink:to="loc_us-gaap_OtherLiabilitiesNoncurrent_019e424d-cdf7-74dd-958e-d422c15a8297" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtNoncurrent_019e424d-cdf7-7535-b98d-af88c7657636" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LongTermDebtNoncurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_019e424d-cdf7-79b3-b2d0-80f2a8b6b6ec" xlink:to="loc_us-gaap_LongTermDebtNoncurrent_019e424d-cdf7-7535-b98d-af88c7657636" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.fticonsulting.com/role/CondensedConsolidatedStatementsofComprehensiveIncome" xlink:type="simple" xlink:href="fcn-20260630.xsd#CondensedConsolidatedStatementsofComprehensiveIncome"/>
  <link:calculationLink xlink:role="http://www.fticonsulting.com/role/CondensedConsolidatedStatementsofComprehensiveIncome" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e424d-cdf7-7588-ad92-e9cf560c466c" 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_019e424d-cdf7-72ba-bad1-92be2af3a3ed" 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_019e424d-cdf7-7588-ad92-e9cf560c466c" xlink:to="loc_us-gaap_OperatingIncomeLoss_019e424d-cdf7-72ba-bad1-92be2af3a3ed" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_019e424d-cdf7-725e-84b8-b7fb0b0b8984" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e424d-cdf7-7588-ad92-e9cf560c466c" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_019e424d-cdf7-725e-84b8-b7fb0b0b8984" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ComprehensiveIncomeNetOfTax_019e424d-cdf7-7b95-908b-051327c28026" 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_NetIncomeLoss_019e424d-cdf7-710a-95ee-abe48efebc04" 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_ComprehensiveIncomeNetOfTax_019e424d-cdf7-7b95-908b-051327c28026" xlink:to="loc_us-gaap_NetIncomeLoss_019e424d-cdf7-710a-95ee-abe48efebc04" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_019e424d-cdf7-754b-b665-b7125c105ae2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_ComprehensiveIncomeNetOfTax_019e424d-cdf7-7b95-908b-051327c28026" xlink:to="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_019e424d-cdf7-754b-b665-b7125c105ae2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLoss_019e424d-cdf7-709f-a20a-541228881eb3" 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_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e424d-cdf7-750f-8194-f000b4d14d5d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019e424d-cdf7-709f-a20a-541228881eb3" xlink:to="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019e424d-cdf7-750f-8194-f000b4d14d5d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeTaxExpenseBenefit_019e424d-cdf7-7b28-b0aa-76b35625e6c9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncomeTaxExpenseBenefit"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLoss_019e424d-cdf7-709f-a20a-541228881eb3" xlink:to="loc_us-gaap_IncomeTaxExpenseBenefit_019e424d-cdf7-7b28-b0aa-76b35625e6c9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_019e424d-cdf7-7705-9933-9f88b5e04aa0" 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_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_019e424d-cdf7-76fc-be00-a51c9ac552f6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent_019e424d-cdf7-7705-9933-9f88b5e04aa0" xlink:to="loc_us-gaap_OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPortionAttributableToParent_019e424d-cdf7-76fc-be00-a51c9ac552f6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_019e424d-cdf7-754f-9462-8fa797387173" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostsAndExpenses"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostOfRevenue_019e424d-cdf7-79d8-b2a5-5866bc6bf65d" 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_CostsAndExpenses_019e424d-cdf7-754f-9462-8fa797387173" xlink:to="loc_us-gaap_CostOfRevenue_019e424d-cdf7-79d8-b2a5-5866bc6bf65d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019e424d-cdf7-7a8f-998b-7d2caac3b57c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SellingGeneralAndAdministrativeExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_019e424d-cdf7-754f-9462-8fa797387173" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019e424d-cdf7-7a8f-998b-7d2caac3b57c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_019e424d-cdf7-7343-b9e8-8661148611a9" 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_CostsAndExpenses_019e424d-cdf7-754f-9462-8fa797387173" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_019e424d-cdf7-7343-b9e8-8661148611a9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringAndRelatedCostIncurredCost_019e424d-cdf7-7d7e-af79-836aca821165" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringAndRelatedCostIncurredCost"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_CostsAndExpenses_019e424d-cdf7-754f-9462-8fa797387173" xlink:to="loc_us-gaap_RestructuringAndRelatedCostIncurredCost_019e424d-cdf7-7d7e-af79-836aca821165" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_019e424d-cdf7-70f1-b48b-1290813c9e3d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:loc xlink:type="locator" xlink:label="loc_fcn_InterestAndOtherIncomeExpenseNet_019e424d-cdf7-765e-b128-284204779196" xlink:href="fcn-20260630.xsd#fcn_InterestAndOtherIncomeExpenseNet"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_019e424d-cdf7-70f1-b48b-1290813c9e3d" xlink:to="loc_fcn_InterestAndOtherIncomeExpenseNet_019e424d-cdf7-765e-b128-284204779196" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseNonoperating_019e424d-cdf7-7e01-a250-18e183fac55e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_019e424d-cdf7-70f1-b48b-1290813c9e3d" xlink:to="loc_us-gaap_InterestExpenseNonoperating_019e424d-cdf7-7e01-a250-18e183fac55e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingIncomeLoss_019e424d-cdf7-76a3-9830-a79445339856" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingIncomeLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019e424d-cdf7-7a0b-b5c2-dc523ff52a98" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_019e424d-cdf7-76a3-9830-a79445339856" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019e424d-cdf7-7a0b-b5c2-dc523ff52a98" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CostsAndExpenses_019e424d-cdf7-76cf-85ef-113981eaabe0" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_CostsAndExpenses"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingIncomeLoss_019e424d-cdf7-76a3-9830-a79445339856" xlink:to="loc_us-gaap_CostsAndExpenses_019e424d-cdf7-76cf-85ef-113981eaabe0" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.fticonsulting.com/role/CondensedConsolidatedStatementsofCashFlows" xlink:type="simple" xlink:href="fcn-20260630.xsd#CondensedConsolidatedStatementsofCashFlows"/>
  <link:calculationLink xlink:role="http://www.fticonsulting.com/role/CondensedConsolidatedStatementsofCashFlows" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e424d-cdf7-7990-9098-2b90f68e2f74" 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_ProceedsFromLinesOfCredit_019e424d-cdf7-7293-926c-d5736003bfb2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromLinesOfCredit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e424d-cdf7-7990-9098-2b90f68e2f74" xlink:to="loc_us-gaap_ProceedsFromLinesOfCredit_019e424d-cdf7-7293-926c-d5736003bfb2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfLinesOfCredit_019e424d-cdf7-763a-9ee0-248912ab411b" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RepaymentsOfLinesOfCredit"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e424d-cdf7-7990-9098-2b90f68e2f74" xlink:to="loc_us-gaap_RepaymentsOfLinesOfCredit_019e424d-cdf7-763a-9ee0-248912ab411b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_019ed838-34e6-7b57-8572-8bee517f6e07" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromIssuanceOfLongTermDebt"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e424d-cdf7-7990-9098-2b90f68e2f74" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfLongTermDebt_019ed838-34e6-7b57-8572-8bee517f6e07" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDebtIssuanceCosts_019f6f8c-f712-7b39-a04b-a7d27c8b307d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsOfDebtIssuanceCosts"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e424d-cdf7-7990-9098-2b90f68e2f74" xlink:to="loc_us-gaap_PaymentsOfDebtIssuanceCosts_019f6f8c-f712-7b39-a04b-a7d27c8b307d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_019e424d-cdf7-72e9-b29a-957ed127c20d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsForRepurchaseOfCommonStock"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e424d-cdf7-7990-9098-2b90f68e2f74" xlink:to="loc_us-gaap_PaymentsForRepurchaseOfCommonStock_019e424d-cdf7-72e9-b29a-957ed127c20d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_019e424d-cdf7-7dcd-8b4a-c9f690e6abf1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e424d-cdf7-7990-9098-2b90f68e2f74" xlink:to="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_019e424d-cdf7-7dcd-8b4a-c9f690e6abf1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_019e424d-cdf7-7e2c-9f86-8c5ef4680113" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProceedsFromPaymentsForOtherFinancingActivities"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e424d-cdf7-7990-9098-2b90f68e2f74" xlink:to="loc_us-gaap_ProceedsFromPaymentsForOtherFinancingActivities_019e424d-cdf7-7e2c-9f86-8c5ef4680113" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e424d-cdf7-773b-a5fb-7d05d5f79892" 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_019e424d-cdf7-7bc9-bbd3-8a2f51be67c6" 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_019e424d-cdf7-773b-a5fb-7d05d5f79892" xlink:to="loc_us-gaap_NetIncomeLoss_019e424d-cdf7-7bc9-bbd3-8a2f51be67c6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_019e424d-cdf7-7681-9ac2-c8f4774bb65e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e424d-cdf7-773b-a5fb-7d05d5f79892" xlink:to="loc_us-gaap_DepreciationAndAmortization_019e424d-cdf7-7681-9ac2-c8f4774bb65e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfIntangibleAssets_019e424d-cdf7-7b48-af97-b639d3226aea" 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_019e424d-cdf7-773b-a5fb-7d05d5f79892" xlink:to="loc_us-gaap_AmortizationOfIntangibleAssets_019e424d-cdf7-7b48-af97-b639d3226aea" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization_019f44e4-423b-7e8d-aade-6a1d8fe9522d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e424d-cdf7-773b-a5fb-7d05d5f79892" xlink:to="loc_us-gaap_AmortizationMethodQualifiedAffordableHousingProjectInvestmentsAmortization_019f44e4-423b-7e8d-aade-6a1d8fe9522d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProvisionForDoubtfulAccounts_019e424d-cdf7-7e25-a8bd-e10e57f2bd60" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_ProvisionForDoubtfulAccounts"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e424d-cdf7-773b-a5fb-7d05d5f79892" xlink:to="loc_us-gaap_ProvisionForDoubtfulAccounts_019e424d-cdf7-7e25-a8bd-e10e57f2bd60" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_019e424d-cdf7-7bc4-8501-5826ff632b9c" 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_019e424d-cdf7-773b-a5fb-7d05d5f79892" xlink:to="loc_us-gaap_ShareBasedCompensation_019e424d-cdf7-7bc4-8501-5826ff632b9c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fcn_DeferredIncomeTaxExpenseBenefitExcludingCTA_019e424d-cdf7-7ba9-b145-a4d63b70ed20" xlink:href="fcn-20260630.xsd#fcn_DeferredIncomeTaxExpenseBenefitExcludingCTA"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e424d-cdf7-773b-a5fb-7d05d5f79892" xlink:to="loc_fcn_DeferredIncomeTaxExpenseBenefitExcludingCTA_019e424d-cdf7-7ba9-b145-a4d63b70ed20" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_019e424d-cdf7-7a4c-a368-33dc07b0fb22" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e424d-cdf7-773b-a5fb-7d05d5f79892" xlink:to="loc_us-gaap_BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1_019e424d-cdf7-7a4c-a368-33dc07b0fb22" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_019e424d-cdf7-7c42-8efd-e006ff765751" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e424d-cdf7-773b-a5fb-7d05d5f79892" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsReceivable_019e424d-cdf7-7c42-8efd-e006ff765751" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInNotesReceivableCurrent_019e424d-cdf7-7de3-a442-97a031749f0f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInNotesReceivableCurrent"/>
    <link:calculationArc order="10" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e424d-cdf7-773b-a5fb-7d05d5f79892" xlink:to="loc_us-gaap_IncreaseDecreaseInNotesReceivableCurrent_019e424d-cdf7-7de3-a442-97a031749f0f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_019e424d-cdf7-7caa-aebf-0481dc02cc0e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets"/>
    <link:calculationArc order="11" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e424d-cdf7-773b-a5fb-7d05d5f79892" xlink:to="loc_us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets_019e424d-cdf7-7caa-aebf-0481dc02cc0e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_019e424d-cdf7-7ac9-83e8-4983af29010a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e424d-cdf7-773b-a5fb-7d05d5f79892" xlink:to="loc_us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_019e424d-cdf7-7ac9-83e8-4983af29010a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_019e424d-cdf7-7ec5-94c9-6bd9e534f1b1" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable"/>
    <link:calculationArc order="13" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e424d-cdf7-773b-a5fb-7d05d5f79892" xlink:to="loc_us-gaap_IncreaseDecreaseInAccruedIncomeTaxesPayable_019e424d-cdf7-7ec5-94c9-6bd9e534f1b1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_019e424d-cdf7-7221-adf5-ee78623bf4f2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities"/>
    <link:calculationArc order="14" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e424d-cdf7-773b-a5fb-7d05d5f79892" xlink:to="loc_us-gaap_IncreaseDecreaseInEmployeeRelatedLiabilities_019e424d-cdf7-7221-adf5-ee78623bf4f2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fcn_IncreaseDecreaseInBillingInExcessOfServiceProvided_019e424d-cdf7-7a0e-8280-4e069a09cdcb" xlink:href="fcn-20260630.xsd#fcn_IncreaseDecreaseInBillingInExcessOfServiceProvided"/>
    <link:calculationArc order="15" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e424d-cdf7-773b-a5fb-7d05d5f79892" xlink:to="loc_fcn_IncreaseDecreaseInBillingInExcessOfServiceProvided_019e424d-cdf7-7a0e-8280-4e069a09cdcb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fcn_AmortizationOfLoansToEmployees_019e424d-cdf7-7794-a30d-0327a381287a" xlink:href="fcn-20260630.xsd#fcn_AmortizationOfLoansToEmployees"/>
    <link:calculationArc order="16" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e424d-cdf7-773b-a5fb-7d05d5f79892" xlink:to="loc_fcn_AmortizationOfLoansToEmployees_019e424d-cdf7-7794-a30d-0327a381287a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019e424d-cdf7-7fc2-a711-35d0aff4b899" 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_PaymentsToAcquireOtherInvestments_019efe7c-817b-7adb-a84a-65c4731fb24c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsToAcquireOtherInvestments"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019e424d-cdf7-7fc2-a711-35d0aff4b899" xlink:to="loc_us-gaap_PaymentsToAcquireOtherInvestments_019efe7c-817b-7adb-a84a-65c4731fb24c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_019e424d-cdf7-7a12-aadc-7cd18644f1dc" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019e424d-cdf7-7fc2-a711-35d0aff4b899" xlink:to="loc_us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_019e424d-cdf7-7a12-aadc-7cd18644f1dc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_019e424d-cdf7-779b-b8ab-ecc2323a1076" 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_019e424d-cdf7-7fec-b6a1-0fb89ffb0341" 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_019e424d-cdf7-779b-b8ab-ecc2323a1076" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_019e424d-cdf7-7fec-b6a1-0fb89ffb0341" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019e424d-cdf7-746f-9aaa-a290481f5058" 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_019e424d-cdf7-779b-b8ab-ecc2323a1076" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_019e424d-cdf7-746f-9aaa-a290481f5058" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e424d-cdf7-7dd1-b982-5e0c4dbf5913" 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_019e424d-cdf7-779b-b8ab-ecc2323a1076" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_019e424d-cdf7-7dd1-b982-5e0c4dbf5913" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_019e424d-cdf7-7d53-a1bc-18eb87692d09" 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_019e424d-cdf7-779b-b8ab-ecc2323a1076" xlink:to="loc_us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_019e424d-cdf7-7d53-a1bc-18eb87692d09" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.fticonsulting.com/role/EarningsperCommonShareDetails" xlink:type="simple" xlink:href="fcn-20260630.xsd#EarningsperCommonShareDetails"/>
  <link:calculationLink xlink:role="http://www.fticonsulting.com/role/EarningsperCommonShareDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019e424d-cdf7-7886-aad4-c2dd40595bc4" 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_019e424d-cdf7-7a37-803f-e1361ec58051" 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_019e424d-cdf7-7886-aad4-c2dd40595bc4" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_019e424d-cdf7-7a37-803f-e1361ec58051" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_019e424d-cdf7-7492-a04d-629c8fceec1f" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_019e424d-cdf7-7886-aad4-c2dd40595bc4" xlink:to="loc_us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements_019e424d-cdf7-7492-a04d-629c8fceec1f" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.fticonsulting.com/role/AccountsReceivableandAllowanceforExpectedCreditLossesScheduleofAccountsReceivableNetDetails" xlink:type="simple" xlink:href="fcn-20260630.xsd#AccountsReceivableandAllowanceforExpectedCreditLossesScheduleofAccountsReceivableNetDetails"/>
  <link:calculationLink xlink:role="http://www.fticonsulting.com/role/AccountsReceivableandAllowanceforExpectedCreditLossesScheduleofAccountsReceivableNetDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_019e424d-cdf7-7d0c-8f8b-84a4d1e5d850" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableGrossCurrent_019e424d-cdf7-7d4b-887d-629b0f6ebdf6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AccountsReceivableGrossCurrent"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsReceivableNetCurrent_019e424d-cdf7-7d0c-8f8b-84a4d1e5d850" xlink:to="loc_us-gaap_AccountsReceivableGrossCurrent_019e424d-cdf7-7d4b-887d-629b0f6ebdf6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnbilledReceivablesCurrent_019e424d-cdf7-7b51-9a88-e0c53f31826c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_UnbilledReceivablesCurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsReceivableNetCurrent_019e424d-cdf7-7d0c-8f8b-84a4d1e5d850" xlink:to="loc_us-gaap_UnbilledReceivablesCurrent_019e424d-cdf7-7b51-9a88-e0c53f31826c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_019e424d-cdf7-7b0d-86f8-75c2980fb250" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_AccountsReceivableNetCurrent_019e424d-cdf7-7d0c-8f8b-84a4d1e5d850" xlink:to="loc_us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent_019e424d-cdf7-7b0d-86f8-75c2980fb250" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.fticonsulting.com/role/GoodwillandIntangibleAssetsScheduleofIntangibleAssetsDetails" xlink:type="simple" xlink:href="fcn-20260630.xsd#GoodwillandIntangibleAssetsScheduleofIntangibleAssetsDetails"/>
  <link:calculationLink xlink:role="http://www.fticonsulting.com/role/GoodwillandIntangibleAssetsScheduleofIntangibleAssetsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019e424d-cea0-7303-9371-b6ddf2dddce9" 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_us-gaap_FiniteLivedIntangibleAssetsGross_019e424d-cea0-74b0-9d1c-13fcde097460" 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_FiniteLivedIntangibleAssetsNet_019e424d-cea0-7303-9371-b6ddf2dddce9" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsGross_019e424d-cea0-74b0-9d1c-13fcde097460" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_019e424d-cea0-75a2-87ae-b5625fc8e1cf" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019e424d-cea0-7303-9371-b6ddf2dddce9" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_019e424d-cea0-75a2-87ae-b5625fc8e1cf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_019e424d-cea0-7b8a-ade4-d430d3193200" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019e424d-cea0-7e9f-a84c-2e46f9eede0a" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsNet"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_019e424d-cea0-7b8a-ade4-d430d3193200" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsNet_019e424d-cea0-7e9f-a84c-2e46f9eede0a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_019e424d-cea0-70b9-b04d-2e59e9abdfa1" 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_IntangibleAssetsNetExcludingGoodwill_019e424d-cea0-7b8a-ade4-d430d3193200" xlink:to="loc_us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill_019e424d-cea0-70b9-b04d-2e59e9abdfa1" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.fticonsulting.com/role/GoodwillandIntangibleAssetsScheduleofIntangibleAssetsDetails_1" xlink:type="simple" xlink:href="fcn-20260630.xsd#GoodwillandIntangibleAssetsScheduleofIntangibleAssetsDetails_1"/>
  <link:calculationLink xlink:role="http://www.fticonsulting.com/role/GoodwillandIntangibleAssetsScheduleofIntangibleAssetsDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_019e424d-cea0-71f2-b735-8842afa911e5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IntangibleAssetsNetExcludingGoodwill"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_019e424d-cea0-7d68-ad83-b5270ff4f144" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_IntangibleAssetsGrossExcludingGoodwill"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_019e424d-cea0-71f2-b735-8842afa911e5" xlink:to="loc_us-gaap_IntangibleAssetsGrossExcludingGoodwill_019e424d-cea0-7d68-ad83-b5270ff4f144" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_019e424d-cea0-7ea2-b51f-656735ffb1e5" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IntangibleAssetsNetExcludingGoodwill_019e424d-cea0-71f2-b735-8842afa911e5" xlink:to="loc_us-gaap_FiniteLivedIntangibleAssetsAccumulatedAmortization_019e424d-cea0-7ea2-b51f-656735ffb1e5" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.fticonsulting.com/role/DebtScheduleofComponentsofDebtObligationsDetails" xlink:type="simple" xlink:href="fcn-20260630.xsd#DebtScheduleofComponentsofDebtObligationsDetails"/>
  <link:calculationLink xlink:role="http://www.fticonsulting.com/role/DebtScheduleofComponentsofDebtObligationsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_019e424d-cea0-7389-8fe0-0e26048a34fc" 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_DebtInstrumentCarryingAmount_019e424d-cea0-7151-bc9d-4ced62a445e8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_019e424d-cea0-7389-8fe0-0e26048a34fc" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_019e424d-cea0-7151-bc9d-4ced62a445e8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredFinanceCostsNet_019e424d-cea0-7879-be53-1d7855397334" 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_LongTermDebt_019e424d-cea0-7389-8fe0-0e26048a34fc" xlink:to="loc_us-gaap_DeferredFinanceCostsNet_019e424d-cea0-7879-be53-1d7855397334" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.fticonsulting.com/role/LeasesScheduleofLeaseAssetsandLiabilitiesDetails" xlink:type="simple" xlink:href="fcn-20260630.xsd#LeasesScheduleofLeaseAssetsandLiabilitiesDetails"/>
  <link:calculationLink xlink:role="http://www.fticonsulting.com/role/LeasesScheduleofLeaseAssetsandLiabilitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_019e424d-cea0-7e22-bf45-92c669c68136" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityCurrent_019e424d-cea0-74c9-b91c-ec3719670d60" 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_OperatingLeaseLiability_019e424d-cea0-7e22-bf45-92c669c68136" xlink:to="loc_us-gaap_OperatingLeaseLiabilityCurrent_019e424d-cea0-74c9-b91c-ec3719670d60" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_019e424d-cea0-7206-a74e-bf3ce7c0ae6e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiabilityNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeaseLiability_019e424d-cea0-7e22-bf45-92c669c68136" xlink:to="loc_us-gaap_OperatingLeaseLiabilityNoncurrent_019e424d-cea0-7206-a74e-bf3ce7c0ae6e" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.fticonsulting.com/role/LeasesScheduleofLeaseCostDetails" xlink:type="simple" xlink:href="fcn-20260630.xsd#LeasesScheduleofLeaseCostDetails"/>
  <link:calculationLink xlink:role="http://www.fticonsulting.com/role/LeasesScheduleofLeaseCostDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LeaseCost_019e424d-cea0-79ef-9173-919ebee1c272" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LeaseCost"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseCost_019e424d-cea0-7d21-8d4e-bf6aeec992cb" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseCost"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_019e424d-cea0-79ef-9173-919ebee1c272" xlink:to="loc_us-gaap_OperatingLeaseCost_019e424d-cea0-7d21-8d4e-bf6aeec992cb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_VariableLeaseCost_019e424d-cea0-77f2-abc6-327f12e76545" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_VariableLeaseCost"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LeaseCost_019e424d-cea0-79ef-9173-919ebee1c272" xlink:to="loc_us-gaap_VariableLeaseCost_019e424d-cea0-77f2-abc6-327f12e76545" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.fticonsulting.com/role/LeasesScheduleofMaturityAnalysisDetails" xlink:type="simple" xlink:href="fcn-20260630.xsd#LeasesScheduleofMaturityAnalysisDetails"/>
  <link:calculationLink xlink:role="http://www.fticonsulting.com/role/LeasesScheduleofMaturityAnalysisDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_019e424d-cea0-7062-8fd0-e13ca92e49e6" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_019e424d-cea0-7401-bf2b-4c0d33855267" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_019e424d-cea0-7062-8fd0-e13ca92e49e6" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsRemainderOfFiscalYear_019e424d-cea0-7401-bf2b-4c0d33855267" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_019e424d-cea0-7e12-88f2-3b28a036cba8" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_019e424d-cea0-7062-8fd0-e13ca92e49e6" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths_019e424d-cea0-7e12-88f2-3b28a036cba8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_019e424d-cea0-74b5-8df4-7ab7110d849d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_019e424d-cea0-7062-8fd0-e13ca92e49e6" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearTwo_019e424d-cea0-74b5-8df4-7ab7110d849d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_019e424d-cea0-74fb-baf2-ff41f9cfb957" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_019e424d-cea0-7062-8fd0-e13ca92e49e6" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearThree_019e424d-cea0-74fb-baf2-ff41f9cfb957" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_019e424d-cea0-7943-80cd-d21788b66a56" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_019e424d-cea0-7062-8fd0-e13ca92e49e6" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDueYearFour_019e424d-cea0-7943-80cd-d21788b66a56" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fcn_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour_019e424d-cea0-741d-919c-60082d213282" xlink:href="fcn-20260630.xsd#fcn_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_019e424d-cea0-7062-8fd0-e13ca92e49e6" xlink:to="loc_fcn_LesseeOperatingLeaseLiabilityToBePaidAfterYearFour_019e424d-cea0-741d-919c-60082d213282" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.fticonsulting.com/role/LeasesScheduleofMaturityAnalysisDetails_1" xlink:type="simple" xlink:href="fcn-20260630.xsd#LeasesScheduleofMaturityAnalysisDetails_1"/>
  <link:calculationLink xlink:role="http://www.fticonsulting.com/role/LeasesScheduleofMaturityAnalysisDetails_1" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_019e424d-cea0-79ed-9d59-e8482b7f0979" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLiability_019e424d-cea0-7c77-8432-b0d60ed5f574" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_OperatingLeaseLiability"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_019e424d-cea0-79ed-9d59-e8482b7f0979" xlink:to="loc_us-gaap_OperatingLeaseLiability_019e424d-cea0-7c77-8432-b0d60ed5f574" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_019e424d-cea0-7b57-a30b-04d8601dfef9" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_LesseeOperatingLeaseLiabilityPaymentsDue_019e424d-cea0-79ed-9d59-e8482b7f0979" xlink:to="loc_us-gaap_LesseeOperatingLeaseLiabilityUndiscountedExcessAmount_019e424d-cea0-7b57-a30b-04d8601dfef9" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.fticonsulting.com/role/SegmentReportingScheduleofRevenuesandAdjustedSegmentEarningsbeforeInterestTaxesDepreciationandAmortizationforReportableSegmentsDetails" xlink:type="simple" xlink:href="fcn-20260630.xsd#SegmentReportingScheduleofRevenuesandAdjustedSegmentEarningsbeforeInterestTaxesDepreciationandAmortizationforReportableSegmentsDetails"/>
  <link:calculationLink xlink:role="http://www.fticonsulting.com/role/SegmentReportingScheduleofRevenuesandAdjustedSegmentEarningsbeforeInterestTaxesDepreciationandAmortizationforReportableSegmentsDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_019e424d-cea1-7ebb-bffa-3de57ab49205" 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_RevenueFromContractWithCustomerExcludingAssessedTax_019e424d-cea1-7d01-a818-372bea79ebf2" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_019e424d-cea1-7ebb-bffa-3de57ab49205" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_019e424d-cea1-7d01-a818-372bea79ebf2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DirectOperatingCosts_019e424d-cea1-7946-b24b-757d88de3729" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DirectOperatingCosts"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_GrossProfit_019e424d-cea1-7ebb-bffa-3de57ab49205" xlink:to="loc_us-gaap_DirectOperatingCosts_019e424d-cea1-7946-b24b-757d88de3729" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DirectOperatingCosts_019e424d-cea1-75c4-8da2-e3ae063182bd" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_DirectOperatingCosts"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_EmployeeBenefitsAndShareBasedCompensation_019e424d-cea1-7ed5-8bc6-ec1c803d342c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_EmployeeBenefitsAndShareBasedCompensation"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DirectOperatingCosts_019e424d-cea1-75c4-8da2-e3ae063182bd" xlink:to="loc_us-gaap_EmployeeBenefitsAndShareBasedCompensation_019e424d-cea1-7ed5-8bc6-ec1c803d342c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SegmentReportingOtherItemAmount_019e424d-cea1-75db-8875-2aeec9465092" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_SegmentReportingOtherItemAmount"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_DirectOperatingCosts_019e424d-cea1-75c4-8da2-e3ae063182bd" xlink:to="loc_us-gaap_SegmentReportingOtherItemAmount_019e424d-cea1-75db-8875-2aeec9465092" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://www.fticonsulting.com/role/SegmentReportingScheduleofReconciliationofNetIncometoAdjustedSegmentEarningsbeforeInterestTaxesDepreciationandAmortizationDetails" xlink:type="simple" xlink:href="fcn-20260630.xsd#SegmentReportingScheduleofReconciliationofNetIncometoAdjustedSegmentEarningsbeforeInterestTaxesDepreciationandAmortizationDetails"/>
  <link:calculationLink xlink:role="http://www.fticonsulting.com/role/SegmentReportingScheduleofReconciliationofNetIncometoAdjustedSegmentEarningsbeforeInterestTaxesDepreciationandAmortizationDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019f7234-5f01-7d2f-a328-b99d76c22fc7" 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_InterestExpenseNonoperating_019f7234-5f01-70d0-87da-5ef1ec04a27c" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019f7234-5f01-7d2f-a328-b99d76c22fc7" xlink:to="loc_us-gaap_InterestExpenseNonoperating_019f7234-5f01-70d0-87da-5ef1ec04a27c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_fcn_InterestAndOtherIncomeExpenseNet_019f7234-5f01-7ef2-b0f2-a16520a1a511" xlink:href="fcn-20260630.xsd#fcn_InterestAndOtherIncomeExpenseNet"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019f7234-5f01-7d2f-a328-b99d76c22fc7" xlink:to="loc_fcn_InterestAndOtherIncomeExpenseNet_019f7234-5f01-7ef2-b0f2-a16520a1a511" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdjustmentForAmortization_019f7234-5f01-743f-80ad-205e6e9ea22e" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_AdjustmentForAmortization"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019f7234-5f01-7d2f-a328-b99d76c22fc7" xlink:to="loc_us-gaap_AdjustmentForAmortization_019f7234-5f01-743f-80ad-205e6e9ea22e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestructuringAndRelatedCostIncurredCost_019f7234-5f01-765d-9246-06b1cbd09959" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_RestructuringAndRelatedCostIncurredCost"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019f7234-5f01-7d2f-a328-b99d76c22fc7" xlink:to="loc_us-gaap_RestructuringAndRelatedCostIncurredCost_019f7234-5f01-765d-9246-06b1cbd09959" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019f7234-5f01-73d2-b9e0-413176561600" 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_019f7234-5f01-7d2f-a328-b99d76c22fc7" xlink:to="loc_us-gaap_SellingGeneralAndAdministrativeExpense_019f7234-5f01-73d2-b9e0-413176561600" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GrossProfit_019f7234-5f01-7ec9-a3fb-b5025fc08a4d" xlink:href="https://xbrl.fasb.org/us-gaap/2026/elts/us-gaap-2026.xsd#us-gaap_GrossProfit"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="loc_us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest_019f7234-5f01-7d2f-a328-b99d76c22fc7" xlink:to="loc_us-gaap_GrossProfit_019f7234-5f01-7ec9-a3fb-b5025fc08a4d" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
