<?xml version="1.0" encoding="utf-8"?>
<!--XBRL document created with Toppan Merrill Bridge  11.4.0.1 -->
<!--Based on XBRL 2.1-->
<!--Created on: 8/10/2026 7:38:53 PM-->
<!--Modified on: 8/10/2026 7:38:53 PM-->
<link:linkbase 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" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:xlink="http://www.w3.org/1999/xlink">
  <roleRef xlink:type="simple" xlink:href="urg-20260630.xsd#StatementInterimCondensedConsolidatedBalanceSheets" roleURI="http://urg.com/role/StatementInterimCondensedConsolidatedBalanceSheets" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="urg-20260630.xsd#StatementInterimCondensedConsolidatedStatementsOfOperationsAndComprehensiveLoss" roleURI="http://urg.com/role/StatementInterimCondensedConsolidatedStatementsOfOperationsAndComprehensiveLoss" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="urg-20260630.xsd#StatementInterimCondensedConsolidatedStatementsOfCashFlows" roleURI="http://urg.com/role/StatementInterimCondensedConsolidatedStatementsOfCashFlows" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="urg-20260630.xsd#DisclosureSummaryOfSignificantAccountingPoliciesFairValuesOfFinancialInstrumentsDetails" roleURI="http://urg.com/role/DisclosureSummaryOfSignificantAccountingPoliciesFairValuesOfFinancialInstrumentsDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="urg-20260630.xsd#DisclosureCashAndCashEquivalentsDetails" roleURI="http://urg.com/role/DisclosureCashAndCashEquivalentsDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="urg-20260630.xsd#DisclosureInventoryDetails" roleURI="http://urg.com/role/DisclosureInventoryDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="urg-20260630.xsd#DisclosureLeaseReceivablesDetails" roleURI="http://urg.com/role/DisclosureLeaseReceivablesDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="urg-20260630.xsd#DisclosureLeaseReceivablesMaturitiesDetails" roleURI="http://urg.com/role/DisclosureLeaseReceivablesMaturitiesDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="urg-20260630.xsd#DisclosureRestrictedCashAndCashEquivalentsDetails" roleURI="http://urg.com/role/DisclosureRestrictedCashAndCashEquivalentsDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="urg-20260630.xsd#DisclosureCapitalAssetsDetails" roleURI="http://urg.com/role/DisclosureCapitalAssetsDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="urg-20260630.xsd#DisclosureAccountsPayableAndAccruedLiabilitiesDetails" roleURI="http://urg.com/role/DisclosureAccountsPayableAndAccruedLiabilitiesDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="urg-20260630.xsd#DisclosureInventoryDerivativeObligationDetails" roleURI="http://urg.com/role/DisclosureInventoryDerivativeObligationDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="urg-20260630.xsd#DisclosureFinancingLeaseLiabilitiesCalc2" roleURI="http://urg.com/role/DisclosureFinancingLeaseLiabilitiesCalc2" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="urg-20260630.xsd#DisclosureFinancingLeaseLiabilitiesDetails" roleURI="http://urg.com/role/DisclosureFinancingLeaseLiabilitiesDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="urg-20260630.xsd#DisclosureFinancingLeaseLiabilitiesMaturitiesDetails" roleURI="http://urg.com/role/DisclosureFinancingLeaseLiabilitiesMaturitiesDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="urg-20260630.xsd#DisclosureLongTermDebtComponentsOfConvertibleNotesDetails" roleURI="http://urg.com/role/DisclosureLongTermDebtComponentsOfConvertibleNotesDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="urg-20260630.xsd#DisclosureCostOfSalesDetails" roleURI="http://urg.com/role/DisclosureCostOfSalesDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="urg-20260630.xsd#DisclosureOperatingCostsDetails" roleURI="http://urg.com/role/DisclosureOperatingCostsDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="urg-20260630.xsd#DisclosureSupplementalInformationForStatementsOfCashFlowsCashAndCashEquivalentsAndRestrictedCashAndCashEquivalentsDetails" roleURI="http://urg.com/role/DisclosureSupplementalInformationForStatementsOfCashFlowsCashAndCashEquivalentsAndRestrictedCashAndCashEquivalentsDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <roleRef xlink:type="simple" xlink:href="urg-20260630.xsd#DisclosureSupplementalInformationForStatementsOfCashFlowsCashAndNonCashInterestExpenseDetails" roleURI="http://urg.com/role/DisclosureSupplementalInformationForStatementsOfCashFlowsCashAndNonCashInterestExpenseDetails" xmlns="http://www.xbrl.org/2003/linkbase" />
  <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" />
  <calculationLink xlink:role="http://urg.com/role/StatementInterimCondensedConsolidatedBalanceSheets" xlink:type="extended" xlink:title="995200100 - Statement - Interim Condensed Consolidated Balance Sheets" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Assets" xlink:label="us-gaap_Assets" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsNoncurrent" xlink:label="us-gaap_AssetsNoncurrent_639219875316980661" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="us-gaap_AssetsNoncurrent_639219875316980661" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="urg-20260630.xsd#urg_LeaseReceivablesNetNoncurrent" xlink:label="urg_LeaseReceivablesNetNoncurrent_639219875316980661" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_AssetsNoncurrent_639219875316980661" xlink:to="urg_LeaseReceivablesNetNoncurrent_639219875316980661" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedCashAndCashEquivalentsNoncurrent" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsNoncurrent_639219875316980661" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_AssetsNoncurrent_639219875316980661" xlink:to="us-gaap_RestrictedCashAndCashEquivalentsNoncurrent_639219875316980661" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MineralPropertiesNet" xlink:label="us-gaap_MineralPropertiesNet_639219875316980661" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_AssetsNoncurrent_639219875316980661" xlink:to="us-gaap_MineralPropertiesNet_639219875316980661" order="3" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeAssetsNoncurrent" xlink:label="us-gaap_DerivativeAssetsNoncurrent_639219875316980661" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_AssetsNoncurrent_639219875316980661" xlink:to="us-gaap_DerivativeAssetsNoncurrent_639219875316980661" order="4" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_639219875316980661" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_AssetsNoncurrent_639219875316980661" xlink:to="us-gaap_PropertyPlantAndEquipmentNet_639219875316980661" order="5" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsCurrent" xlink:label="us-gaap_AssetsCurrent_639219875316980661" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_Assets" xlink:to="us-gaap_AssetsCurrent_639219875316980661" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_639219875316980661" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_AssetsCurrent_639219875316980661" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValue_639219875316980661" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_MarketableSecuritiesCurrent" xlink:label="us-gaap_MarketableSecuritiesCurrent_639219875316980661" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_AssetsCurrent_639219875316980661" xlink:to="us-gaap_MarketableSecuritiesCurrent_639219875316980661" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="urg-20260630.xsd#urg_LeaseReceivablesNetCurrent" xlink:label="urg_LeaseReceivablesNetCurrent_639219875316980661" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_AssetsCurrent_639219875316980661" xlink:to="urg_LeaseReceivablesNetCurrent_639219875316980661" order="3" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryNet" xlink:label="us-gaap_InventoryNet_639219875316980661" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_AssetsCurrent_639219875316980661" xlink:to="us-gaap_InventoryNet_639219875316980661" order="4" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PrepaidExpenseCurrent" xlink:label="us-gaap_PrepaidExpenseCurrent_639219875316980661" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_AssetsCurrent_639219875316980661" xlink:to="us-gaap_PrepaidExpenseCurrent_639219875316980661" order="5" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesAndStockholdersEquity" xlink:label="us-gaap_LiabilitiesAndStockholdersEquity" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_StockholdersEquity" xlink:label="us-gaap_StockholdersEquity_639219875316980661" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_StockholdersEquity_639219875316980661" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RetainedEarningsAccumulatedDeficit" xlink:label="us-gaap_RetainedEarningsAccumulatedDeficit_639219875316980661" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity_639219875316980661" xlink:to="us-gaap_RetainedEarningsAccumulatedDeficit_639219875316980661" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax" xlink:label="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_639219875316980661" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity_639219875316980661" xlink:to="us-gaap_AccumulatedOtherComprehensiveIncomeLossNetOfTax_639219875316980661" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AdditionalPaidInCapital" xlink:label="us-gaap_AdditionalPaidInCapital_639219875316980661" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity_639219875316980661" xlink:to="us-gaap_AdditionalPaidInCapital_639219875316980661" order="3" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CommonStockValue" xlink:label="us-gaap_CommonStockValue_639219875316980661" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_StockholdersEquity_639219875316980661" xlink:to="us-gaap_CommonStockValue_639219875316980661" order="4" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesNoncurrent" xlink:label="us-gaap_LiabilitiesNoncurrent_639219875316980661" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_LiabilitiesNoncurrent_639219875316980661" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="urg-20260630.xsd#urg_StockOptionLiabilitiesNoncurrent" xlink:label="urg_StockOptionLiabilitiesNoncurrent_639219875316980661" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesNoncurrent_639219875316980661" xlink:to="urg_StockOptionLiabilitiesNoncurrent_639219875316980661" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent" xlink:label="us-gaap_FinanceLeaseLiabilityNoncurrent_639219875316980661" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesNoncurrent_639219875316980661" xlink:to="us-gaap_FinanceLeaseLiabilityNoncurrent_639219875316980661" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetRetirementObligationsNoncurrent" xlink:label="us-gaap_AssetRetirementObligationsNoncurrent_639219875316980661" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesNoncurrent_639219875316980661" xlink:to="us-gaap_AssetRetirementObligationsNoncurrent_639219875316980661" order="3" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConvertibleLongTermNotesPayable" xlink:label="us-gaap_ConvertibleLongTermNotesPayable_639219875316980661" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesNoncurrent_639219875316980661" xlink:to="us-gaap_ConvertibleLongTermNotesPayable_639219875316980661" order="4" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeLiabilitiesNoncurrent" xlink:label="us-gaap_DerivativeLiabilitiesNoncurrent_639219875316980661" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesNoncurrent_639219875316980661" xlink:to="us-gaap_DerivativeLiabilitiesNoncurrent_639219875316980661" order="5" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="urg-20260630.xsd#urg_WarrantLiabilityNoncurrent" xlink:label="urg_WarrantLiabilityNoncurrent_639219875316980661" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesNoncurrent_639219875316980661" xlink:to="urg_WarrantLiabilityNoncurrent_639219875316980661" order="6" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_LiabilitiesCurrent" xlink:label="us-gaap_LiabilitiesCurrent_639219875316980661" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesAndStockholdersEquity" xlink:to="us-gaap_LiabilitiesCurrent_639219875316980661" order="3" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccruedEnvironmentalLossContingenciesCurrent" xlink:label="us-gaap_AccruedEnvironmentalLossContingenciesCurrent_639219875316980661" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesCurrent_639219875316980661" xlink:to="us-gaap_AccruedEnvironmentalLossContingenciesCurrent_639219875316980661" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeaseLiabilityCurrent" xlink:label="us-gaap_FinanceLeaseLiabilityCurrent_639219875316980661" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesCurrent_639219875316980661" xlink:to="us-gaap_FinanceLeaseLiabilityCurrent_639219875316980661" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="urg-20260630.xsd#urg_DerivativesLiabilitiesAtFairValueNetCurrent" xlink:label="urg_DerivativesLiabilitiesAtFairValueNetCurrent_639219875317010900" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesCurrent_639219875316980661" xlink:to="urg_DerivativesLiabilitiesAtFairValueNetCurrent_639219875317010900" order="3" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_639219875317011404" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_LiabilitiesCurrent_639219875316980661" xlink:to="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_639219875317011404" order="4" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:role="http://urg.com/role/StatementInterimCondensedConsolidatedStatementsOfOperationsAndComprehensiveLoss" xlink:type="extended" xlink:title="995200200 - Statement - Interim Condensed Consolidated Statements of Operations and Comprehensive Loss" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ComprehensiveIncomeNetOfTax" xlink:label="ComprehensiveIncomeNetOfTax" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetIncomeLoss" xlink:label="us-gaap_NetIncomeLoss_639219875317011404" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="ComprehensiveIncomeNetOfTax" xlink:to="us-gaap_NetIncomeLoss_639219875317011404" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingIncomeLoss" xlink:label="us-gaap_OperatingIncomeLoss_639219875317011404" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetIncomeLoss_639219875317011404" xlink:to="us-gaap_OperatingIncomeLoss_639219875317011404" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingExpenses" xlink:label="us-gaap_OperatingExpenses_639219875317011404" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_OperatingIncomeLoss_639219875317011404" xlink:to="us-gaap_OperatingExpenses_639219875317011404" order="1" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GrossProfit" xlink:label="us-gaap_GrossProfit_639219875317011404" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_OperatingIncomeLoss_639219875317011404" xlink:to="us-gaap_GrossProfit_639219875317011404" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Revenues" xlink:label="us-gaap_Revenues_639219875317011404" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_GrossProfit_639219875317011404" xlink:to="us-gaap_Revenues_639219875317011404" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostOfRevenue" xlink:label="us-gaap_CostOfRevenue_639219875317011404" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_GrossProfit_639219875317011404" xlink:to="us-gaap_CostOfRevenue_639219875317011404" order="2" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentIncomeInterest" xlink:label="us-gaap_InvestmentIncomeInterest_639219875317011404" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetIncomeLoss_639219875317011404" xlink:to="us-gaap_InvestmentIncomeInterest_639219875317011404" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestExpenseNonoperating" xlink:label="us-gaap_InterestExpenseNonoperating_639219875317011404" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetIncomeLoss_639219875317011404" xlink:to="us-gaap_InterestExpenseNonoperating_639219875317011404" order="3" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="urg-20260630.xsd#urg_MarkToMarketGainLossOnRevaluationOfWarrantLiabilityAndInventoryLoan" xlink:label="urg_MarkToMarketGainLossOnRevaluationOfWarrantLiabilityAndInventoryLoan_639219875317011404" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetIncomeLoss_639219875317011404" xlink:to="urg_MarkToMarketGainLossOnRevaluationOfWarrantLiabilityAndInventoryLoan_639219875317011404" order="4" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ForeignCurrencyTransactionGainLossBeforeTax" xlink:label="us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_639219875317011404" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetIncomeLoss_639219875317011404" xlink:to="us-gaap_ForeignCurrencyTransactionGainLossBeforeTax_639219875317011404" order="5" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherNonoperatingIncomeExpense" xlink:label="us-gaap_OtherNonoperatingIncomeExpense_639219875317011404" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetIncomeLoss_639219875317011404" xlink:to="us-gaap_OtherNonoperatingIncomeExpense_639219875317011404" order="6" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax" xlink:label="us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_639219875317011404" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="ComprehensiveIncomeNetOfTax" xlink:to="us-gaap_OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax_639219875317011404" order="2" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:role="http://urg.com/role/StatementInterimCondensedConsolidatedStatementsOfCashFlows" xlink:type="extended" xlink:title="995200400 - Statement - Interim Condensed Consolidated Statements of Cash Flows" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInInvestingActivities_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:to="us-gaap_NetCashProvidedByUsedInInvestingActivities_639219875317026651" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquireMarketableSecurities" xlink:label="us-gaap_PaymentsToAcquireMarketableSecurities_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities_639219875317026651" xlink:to="us-gaap_PaymentsToAcquireMarketableSecurities_639219875317026651" order="1" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment" xlink:label="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities_639219875317026651" xlink:to="us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment_639219875317026651" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsToAcquirePropertyPlantAndEquipment" xlink:label="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInInvestingActivities_639219875317026651" xlink:to="us-gaap_PaymentsToAcquirePropertyPlantAndEquipment_639219875317026651" order="3" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInOperatingActivities_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:to="us-gaap_NetCashProvidedByUsedInOperatingActivities_639219875317026651" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProfitLoss" xlink:label="us-gaap_ProfitLoss_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639219875317026651" xlink:to="us-gaap_ProfitLoss_639219875317026651" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ShareBasedCompensation" xlink:label="us-gaap_ShareBasedCompensation_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639219875317026651" xlink:to="us-gaap_ShareBasedCompensation_639219875317026651" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="urg-20260630.xsd#urg_NetRealizableValueAdjustments" xlink:label="urg_NetRealizableValueAdjustments_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639219875317026651" xlink:to="urg_NetRealizableValueAdjustments_639219875317026651" order="3" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="urg-20260630.xsd#urg_AmortizationOfMineralProperties" xlink:label="urg_AmortizationOfMineralProperties_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639219875317026651" xlink:to="urg_AmortizationOfMineralProperties_639219875317026651" order="4" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Depreciation" xlink:label="us-gaap_Depreciation_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639219875317026651" xlink:to="us-gaap_Depreciation_639219875317026651" order="5" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccretionExpense" xlink:label="us-gaap_AccretionExpense_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639219875317026651" xlink:to="us-gaap_AccretionExpense_639219875317026651" order="6" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AmortizationOfDebtDiscountPremium" xlink:label="us-gaap_AmortizationOfDebtDiscountPremium_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639219875317026651" xlink:to="us-gaap_AmortizationOfDebtDiscountPremium_639219875317026651" order="7" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="urg-20260630.xsd#urg_ProvisionForReclamation" xlink:label="urg_ProvisionForReclamation_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639219875317026651" xlink:to="urg_ProvisionForReclamation_639219875317026651" order="8" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="urg-20260630.xsd#urg_MarkToMarketGainLossOnRevaluationOfWarrantLiabilityAndInventoryLoan" xlink:label="urg_MarkToMarketGainLossOnRevaluationOfWarrantLiabilityAndInventoryLoan_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639219875317026651" xlink:to="urg_MarkToMarketGainLossOnRevaluationOfWarrantLiabilityAndInventoryLoan_639219875317026651" order="9" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GainLossOnDispositionOfAssets1" xlink:label="us-gaap_GainLossOnDispositionOfAssets1_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639219875317026651" xlink:to="us-gaap_GainLossOnDispositionOfAssets1_639219875317026651" order="10" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ForeignCurrencyTransactionGainLossUnrealized" xlink:label="us-gaap_ForeignCurrencyTransactionGainLossUnrealized_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639219875317026651" xlink:to="us-gaap_ForeignCurrencyTransactionGainLossUnrealized_639219875317026651" order="11" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccountsReceivable" xlink:label="us-gaap_IncreaseDecreaseInAccountsReceivable_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639219875317026651" xlink:to="us-gaap_IncreaseDecreaseInAccountsReceivable_639219875317026651" order="12" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInInventories" xlink:label="us-gaap_IncreaseDecreaseInInventories_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639219875317026651" xlink:to="us-gaap_IncreaseDecreaseInInventories_639219875317026651" order="13" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInLeasingReceivables" xlink:label="us-gaap_IncreaseDecreaseInLeasingReceivables_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639219875317026651" xlink:to="us-gaap_IncreaseDecreaseInLeasingReceivables_639219875317026651" order="14" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInPrepaidExpense" xlink:label="us-gaap_IncreaseDecreaseInPrepaidExpense_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639219875317026651" xlink:to="us-gaap_IncreaseDecreaseInPrepaidExpense_639219875317026651" order="15" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities" xlink:label="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInOperatingActivities_639219875317026651" xlink:to="us-gaap_IncreaseDecreaseInAccountsPayableAndAccruedLiabilities_639219875317026651" order="16" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities" xlink:label="us-gaap_NetCashProvidedByUsedInFinancingActivities_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:to="us-gaap_NetCashProvidedByUsedInFinancingActivities_639219875317026651" order="3" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="urg-20260630.xsd#urg_RestrictedStockUnitsRedeemedForCash" xlink:label="urg_RestrictedStockUnitsRedeemedForCash_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities_639219875317026651" xlink:to="urg_RestrictedStockUnitsRedeemedForCash_639219875317026651" order="1" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeasePrincipalPayments" xlink:label="us-gaap_FinanceLeasePrincipalPayments_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities_639219875317026651" xlink:to="us-gaap_FinanceLeasePrincipalPayments_639219875317026651" order="2" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ProceedsFromStockOptionsExercised" xlink:label="us-gaap_ProceedsFromStockOptionsExercised_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities_639219875317026651" xlink:to="us-gaap_ProceedsFromStockOptionsExercised_639219875317026651" order="3" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaymentsOfFinancingCosts" xlink:label="us-gaap_PaymentsOfFinancingCosts_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_NetCashProvidedByUsedInFinancingActivities_639219875317026651" xlink:to="us-gaap_PaymentsOfFinancingCosts_639219875317026651" order="4" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect" xlink:to="us-gaap_EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_639219875317026651" order="4" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:role="http://urg.com/role/DisclosureSummaryOfSignificantAccountingPoliciesFairValuesOfFinancialInstrumentsDetails" xlink:type="extended" xlink:title="99940202 - Disclosure - Summary of Significant Accounting Policies - Fair values of financial instruments (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AssetsFairValueDisclosure" xlink:label="us-gaap_AssetsFairValueDisclosure_1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InvestmentsFairValueDisclosure" xlink:label="us-gaap_InvestmentsFairValueDisclosure_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_AssetsFairValueDisclosure_1" xlink:to="us-gaap_InvestmentsFairValueDisclosure_639219875317026651" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsFairValueDisclosure" xlink:label="us-gaap_CashAndCashEquivalentsFairValueDisclosure_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_AssetsFairValueDisclosure_1" xlink:to="us-gaap_CashAndCashEquivalentsFairValueDisclosure_639219875317026651" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeAssetsNoncurrent" xlink:label="us-gaap_DerivativeAssetsNoncurrent_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_AssetsFairValueDisclosure_1" xlink:to="us-gaap_DerivativeAssetsNoncurrent_639219875317026651" order="3" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="urg-20260630.xsd#urg_RestrictedCashEquivalentsNoncurrentFairValueDisclosure" xlink:label="urg_RestrictedCashEquivalentsNoncurrentFairValueDisclosure_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_AssetsFairValueDisclosure_1" xlink:to="urg_RestrictedCashEquivalentsNoncurrentFairValueDisclosure_639219875317026651" order="4" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinancialLiabilitiesFairValueDisclosure" xlink:label="us-gaap_FinancialLiabilitiesFairValueDisclosure" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeLiabilities" xlink:label="us-gaap_DerivativeLiabilities_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_FinancialLiabilitiesFairValueDisclosure" xlink:to="us-gaap_DerivativeLiabilities_639219875317026651" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_WarrantsAndRightsOutstanding" xlink:label="us-gaap_WarrantsAndRightsOutstanding_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_FinancialLiabilitiesFairValueDisclosure" xlink:to="us-gaap_WarrantsAndRightsOutstanding_639219875317026651" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConvertibleDebtFairValueDisclosures" xlink:label="us-gaap_ConvertibleDebtFairValueDisclosures_639219875317026651" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_FinancialLiabilitiesFairValueDisclosure" xlink:to="us-gaap_ConvertibleDebtFairValueDisclosures_639219875317026651" order="3" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="urg-20260630.xsd#urg_LiabilityClassifiedOptionsFairValue" xlink:label="urg_LiabilityClassifiedOptionsFairValue_639219875317067476" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_FinancialLiabilitiesFairValueDisclosure" xlink:to="urg_LiabilityClassifiedOptionsFairValue_639219875317067476" order="4" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:role="http://urg.com/role/DisclosureCashAndCashEquivalentsDetails" xlink:type="extended" xlink:title="99940301 - Disclosure - Cash and Cash Equivalents (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashEquivalentsAtCarryingValue" xlink:label="us-gaap_CashEquivalentsAtCarryingValue_639219875317067476" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_CashAndCashEquivalentsAtCarryingValue_1" xlink:to="us-gaap_CashEquivalentsAtCarryingValue_639219875317067476" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_Cash" xlink:label="us-gaap_Cash_639219875317067476" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_CashAndCashEquivalentsAtCarryingValue_1" xlink:to="us-gaap_Cash_639219875317067476" order="2" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:role="http://urg.com/role/DisclosureInventoryDetails" xlink:type="extended" xlink:title="99940401 - Disclosure - Inventory (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryNet" xlink:label="us-gaap_InventoryNet_1" />
    <loc xlink:type="locator" xlink:href="urg-20260630.xsd#urg_InventoryHeldInConversionFacility" xlink:label="urg_InventoryHeldInConversionFacility_639219875317067476" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_InventoryNet_1" xlink:to="urg_InventoryHeldInConversionFacility_639219875317067476" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryRawMaterialsAndSupplies" xlink:label="us-gaap_InventoryRawMaterialsAndSupplies_639219875317067476" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_InventoryNet_1" xlink:to="us-gaap_InventoryRawMaterialsAndSupplies_639219875317067476" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InventoryWorkInProcess" xlink:label="us-gaap_InventoryWorkInProcess_639219875317074797" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_InventoryNet_1" xlink:to="us-gaap_InventoryWorkInProcess_639219875317074797" order="3" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:role="http://urg.com/role/DisclosureLeaseReceivablesDetails" xlink:type="extended" xlink:title="99940501 - Disclosure - Lease Receivables (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="urg-20260630.xsd#urg_LeaseReceivablesNetCurrent" xlink:label="LeaseReceivablesNetCurrent" />
    <loc xlink:type="locator" xlink:href="urg-20260630.xsd#urg_LeaseReceivablesUndiscountedExcessAmountCurrent" xlink:label="urg_LeaseReceivablesUndiscountedExcessAmountCurrent_639219875317078089" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="LeaseReceivablesNetCurrent" xlink:to="urg_LeaseReceivablesUndiscountedExcessAmountCurrent_639219875317078089" order="1" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="urg-20260630.xsd#urg_LeaseReceivablesGrossCurrent" xlink:label="urg_LeaseReceivablesGrossCurrent_639219875317079423" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="LeaseReceivablesNetCurrent" xlink:to="urg_LeaseReceivablesGrossCurrent_639219875317079423" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="urg-20260630.xsd#urg_LeaseReceivablesNetNoncurrent" xlink:label="LeaseReceivablesNetNoncurrent" />
    <loc xlink:type="locator" xlink:href="urg-20260630.xsd#urg_LeaseReceivablesUndiscountedExcessAmountNoncurrent" xlink:label="urg_LeaseReceivablesUndiscountedExcessAmountNoncurrent_639219875317081349" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="LeaseReceivablesNetNoncurrent" xlink:to="urg_LeaseReceivablesUndiscountedExcessAmountNoncurrent_639219875317081349" order="1" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="urg-20260630.xsd#urg_LeaseReceivablesGrossNoncurrent" xlink:label="urg_LeaseReceivablesGrossNoncurrent_639219875317082638" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="LeaseReceivablesNetNoncurrent" xlink:to="urg_LeaseReceivablesGrossNoncurrent_639219875317082638" order="2" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:role="http://urg.com/role/DisclosureLeaseReceivablesMaturitiesDetails" xlink:type="extended" xlink:title="99940502 - Disclosure - Lease Receivables - Maturities (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivable" xlink:label="us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivable" />
    <loc xlink:type="locator" xlink:href="urg-20260630.xsd#urg_SalesTypeAndDirectFinancingLeasesLeaseReceivableCurrentPortion" xlink:label="urg_SalesTypeAndDirectFinancingLeasesLeaseReceivableCurrentPortion_639219875317085972" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivable" xlink:to="urg_SalesTypeAndDirectFinancingLeasesLeaseReceivableCurrentPortion_639219875317085972" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="urg-20260630.xsd#urg_SalesTypeAndDirectFinancingLeasesLeaseReceivableNonCurrentPortion" xlink:label="urg_SalesTypeAndDirectFinancingLeasesLeaseReceivableNonCurrentPortion_639219875317087329" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivable" xlink:to="urg_SalesTypeAndDirectFinancingLeasesLeaseReceivableNonCurrentPortion_639219875317087329" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived" xlink:label="us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedRemainderOfFiscalYear" xlink:label="us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedRemainderOfFiscalYear_639219875317089897" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived" xlink:to="us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedRemainderOfFiscalYear_639219875317089897" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedNextTwelveMonths" xlink:label="us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedNextTwelveMonths_639219875317091213" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived" xlink:to="us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedNextTwelveMonths_639219875317091213" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedTwoYears" xlink:label="us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedTwoYears_639219875317092535" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived" xlink:to="us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedTwoYears_639219875317092535" order="3" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedThreeYears" xlink:label="us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedThreeYears_639219875317094477" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived" xlink:to="us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedThreeYears_639219875317094477" order="4" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFourYears" xlink:label="us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFourYears_639219875317095817" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceived" xlink:to="us-gaap_SalesTypeAndDirectFinancingLeasesLeaseReceivablePaymentsToBeReceivedFourYears_639219875317095817" order="5" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:role="http://urg.com/role/DisclosureRestrictedCashAndCashEquivalentsDetails" xlink:type="extended" xlink:title="99940601 - Disclosure - Restricted Cash and Cash Equivalents (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedCashAndCashEquivalentsNoncurrent" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsNoncurrent_1" />
    <loc xlink:type="locator" xlink:href="urg-20260630.xsd#urg_OtherRestrictedCashAndCashEquivalentsNoncurrent" xlink:label="urg_OtherRestrictedCashAndCashEquivalentsNoncurrent_639219875317100060" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_RestrictedCashAndCashEquivalentsNoncurrent_1" xlink:to="urg_OtherRestrictedCashAndCashEquivalentsNoncurrent_639219875317100060" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="urg-20260630.xsd#urg_CashAndCashEquivalentsPledgedForReclamationNoncurrent" xlink:label="urg_CashAndCashEquivalentsPledgedForReclamationNoncurrent_639219875317101252" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_RestrictedCashAndCashEquivalentsNoncurrent_1" xlink:to="urg_CashAndCashEquivalentsPledgedForReclamationNoncurrent_639219875317101252" order="2" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:role="http://urg.com/role/DisclosureCapitalAssetsDetails" xlink:type="extended" xlink:title="99940801 - Disclosure - Capital Assets (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentNet" xlink:label="us-gaap_PropertyPlantAndEquipmentNet_1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment" xlink:label="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_639219875317104333" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_PropertyPlantAndEquipmentNet_1" xlink:to="us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment_639219875317104333" order="1" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PropertyPlantAndEquipmentGross" xlink:label="us-gaap_PropertyPlantAndEquipmentGross_639219875317105526" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_PropertyPlantAndEquipmentNet_1" xlink:to="us-gaap_PropertyPlantAndEquipmentGross_639219875317105526" order="2" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:role="http://urg.com/role/DisclosureAccountsPayableAndAccruedLiabilitiesDetails" xlink:type="extended" xlink:title="99941001 - Disclosure - Accounts Payable and Accrued Liabilities (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent" xlink:label="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccountsPayableCurrent" xlink:label="us-gaap_AccountsPayableCurrent_639219875317106845" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_1" xlink:to="us-gaap_AccountsPayableCurrent_639219875317106845" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccruedPayrollTaxesCurrent" xlink:label="us-gaap_AccruedPayrollTaxesCurrent_639219875317106845" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_1" xlink:to="us-gaap_AccruedPayrollTaxesCurrent_639219875317106845" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestPayableCurrentAndNoncurrent" xlink:label="us-gaap_InterestPayableCurrentAndNoncurrent_639219875317106845" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_1" xlink:to="us-gaap_InterestPayableCurrentAndNoncurrent_639219875317106845" order="3" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccruedEmployeeBenefitsCurrent" xlink:label="us-gaap_AccruedEmployeeBenefitsCurrent_639219875317106845" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_AccountsPayableAndAccruedLiabilitiesCurrent_1" xlink:to="us-gaap_AccruedEmployeeBenefitsCurrent_639219875317106845" order="4" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:role="http://urg.com/role/DisclosureInventoryDerivativeObligationDetails" xlink:type="extended" xlink:title="99941102 - Disclosure - Inventory Derivative Obligation (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="urg-20260630.xsd#urg_DerivativesLiabilitiesAtFairValueNetCurrent" xlink:label="urg_DerivativesLiabilitiesAtFairValueNetCurrent_1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeLiabilitiesCurrent" xlink:label="us-gaap_DerivativeLiabilitiesCurrent_639219875317112972" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="urg_DerivativesLiabilitiesAtFairValueNetCurrent_1" xlink:to="us-gaap_DerivativeLiabilitiesCurrent_639219875317112972" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DerivativeAssetsCurrent" xlink:label="us-gaap_DerivativeAssetsCurrent_639219875317112972" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="urg_DerivativesLiabilitiesAtFairValueNetCurrent_1" xlink:to="us-gaap_DerivativeAssetsCurrent_639219875317112972" order="2" use="optional" weight="-1" />
  </calculationLink>
  <calculationLink xlink:role="http://urg.com/role/DisclosureFinancingLeaseLiabilitiesCalc2" xlink:type="extended" xlink:title="41103 - Disclosure - Financing Lease Liabilities (Calc2)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDue" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDue_3" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount" xlink:label="us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_639219875317112972" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_FinanceLeaseLiabilityPaymentsDue_3" xlink:to="us-gaap_FinanceLeaseLiabilityUndiscountedExcessAmount_639219875317112972" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeaseLiability" xlink:label="us-gaap_FinanceLeaseLiability_639219875317118321" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_FinanceLeaseLiabilityPaymentsDue_3" xlink:to="us-gaap_FinanceLeaseLiability_639219875317118321" order="2" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:role="http://urg.com/role/DisclosureFinancingLeaseLiabilitiesDetails" xlink:type="extended" xlink:title="99941201 - Disclosure - Financing Lease Liabilities (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeaseLiability" xlink:label="us-gaap_FinanceLeaseLiability_1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeaseLiabilityCurrent" xlink:label="us-gaap_FinanceLeaseLiabilityCurrent_639219875317118985" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_FinanceLeaseLiability_1" xlink:to="us-gaap_FinanceLeaseLiabilityCurrent_639219875317118985" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeaseLiabilityNoncurrent" xlink:label="us-gaap_FinanceLeaseLiabilityNoncurrent_639219875317118985" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_FinanceLeaseLiability_1" xlink:to="us-gaap_FinanceLeaseLiabilityNoncurrent_639219875317118985" order="2" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:role="http://urg.com/role/DisclosureFinancingLeaseLiabilitiesMaturitiesDetails" xlink:type="extended" xlink:title="99941202 - Disclosure - Financing Lease Liabilities - Maturities (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDue" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDue_2" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_639219875317124792" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_FinanceLeaseLiabilityPaymentsDue_2" xlink:to="us-gaap_FinanceLeaseLiabilityPaymentsRemainderOfFiscalYear_639219875317124792" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths_639219875317124792" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_FinanceLeaseLiabilityPaymentsDue_2" xlink:to="us-gaap_FinanceLeaseLiabilityPaymentsDueNextTwelveMonths_639219875317124792" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_639219875317124792" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_FinanceLeaseLiabilityPaymentsDue_2" xlink:to="us-gaap_FinanceLeaseLiabilityPaymentsDueYearTwo_639219875317124792" order="3" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_639219875317124792" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_FinanceLeaseLiabilityPaymentsDue_2" xlink:to="us-gaap_FinanceLeaseLiabilityPaymentsDueYearThree_639219875317124792" order="4" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour" xlink:label="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_639219875317124792" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_FinanceLeaseLiabilityPaymentsDue_2" xlink:to="us-gaap_FinanceLeaseLiabilityPaymentsDueYearFour_639219875317124792" order="5" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:role="http://urg.com/role/DisclosureLongTermDebtComponentsOfConvertibleNotesDetails" xlink:type="extended" xlink:title="99941302 - Disclosure - Long-Term Debt - Components of Convertible Notes (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ConvertibleLongTermNotesPayable" xlink:label="us-gaap_ConvertibleLongTermNotesPayable_1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet" xlink:label="us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet_639219875317130612" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_ConvertibleLongTermNotesPayable_1" xlink:to="us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet_639219875317130612" order="1" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DeferredFinanceCostsNet" xlink:label="us-gaap_DeferredFinanceCostsNet_639219875317130612" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_ConvertibleLongTermNotesPayable_1" xlink:to="us-gaap_DeferredFinanceCostsNet_639219875317130612" order="2" use="optional" weight="-1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DebtInstrumentCarryingAmount" xlink:label="us-gaap_DebtInstrumentCarryingAmount_639219875317130612" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_ConvertibleLongTermNotesPayable_1" xlink:to="us-gaap_DebtInstrumentCarryingAmount_639219875317130612" order="3" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:role="http://urg.com/role/DisclosureCostOfSalesDetails" xlink:type="extended" xlink:title="99941901 - Disclosure - Cost of Sales (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostOfRevenue" xlink:label="us-gaap_CostOfRevenue" />
    <loc xlink:type="locator" xlink:href="urg-20260630.xsd#urg_LowerOfCostOrNRVAdjustments" xlink:label="urg_LowerOfCostOrNRVAdjustments_639219875317130612" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_CostOfRevenue" xlink:to="urg_LowerOfCostOrNRVAdjustments_639219875317130612" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CostOfGoodsAndServicesSold" xlink:label="us-gaap_CostOfGoodsAndServicesSold_639219875317130612" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_CostOfRevenue" xlink:to="us-gaap_CostOfGoodsAndServicesSold_639219875317130612" order="2" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:role="http://urg.com/role/DisclosureOperatingCostsDetails" xlink:type="extended" xlink:title="99942001 - Disclosure - Operating Costs (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_OperatingCostsAndExpenses" xlink:label="us-gaap_OperatingCostsAndExpenses" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_ExplorationExpense" xlink:label="us-gaap_ExplorationExpense_639219875317130612" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_OperatingCostsAndExpenses" xlink:to="us-gaap_ExplorationExpense_639219875317130612" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_DevelopmentCosts" xlink:label="us-gaap_DevelopmentCosts_639219875317130612" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_OperatingCostsAndExpenses" xlink:to="us-gaap_DevelopmentCosts_639219875317130612" order="2" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_GeneralAndAdministrativeExpense" xlink:label="us-gaap_GeneralAndAdministrativeExpense_639219875317141404" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_OperatingCostsAndExpenses" xlink:to="us-gaap_GeneralAndAdministrativeExpense_639219875317141404" order="3" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_AccretionExpense" xlink:label="us-gaap_AccretionExpense_639219875317141404" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_OperatingCostsAndExpenses" xlink:to="us-gaap_AccretionExpense_639219875317141404" order="4" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:role="http://urg.com/role/DisclosureSupplementalInformationForStatementsOfCashFlowsCashAndCashEquivalentsAndRestrictedCashAndCashEquivalentsDetails" xlink:type="extended" xlink:title="99942101 - Disclosure - Supplemental Information for Statements of Cash Flows - Cash and Cash Equivalents, and Restricted Cash and Cash Equivalents (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:label="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_RestrictedCashAndCashEquivalentsNoncurrent" xlink:label="us-gaap_RestrictedCashAndCashEquivalentsNoncurrent_639219875317141404" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:to="us-gaap_RestrictedCashAndCashEquivalentsNoncurrent_639219875317141404" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue" xlink:label="us-gaap_CashAndCashEquivalentsAtCarryingValue_639219875317141404" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents" xlink:to="us-gaap_CashAndCashEquivalentsAtCarryingValue_639219875317141404" order="2" use="optional" weight="1" />
  </calculationLink>
  <calculationLink xlink:role="http://urg.com/role/DisclosureSupplementalInformationForStatementsOfCashFlowsCashAndNonCashInterestExpenseDetails" xlink:type="extended" xlink:title="99942104 - Disclosure - Supplemental Information for Statements of Cash Flows - Cash and Non-cash Interest Expense (Details)" xmlns="http://www.xbrl.org/2003/linkbase">
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_InterestExpenseNonoperating" xlink:label="us-gaap_InterestExpenseNonoperating_1" />
    <loc xlink:type="locator" xlink:href="urg-20260630.xsd#urg_InterestExpensesCash" xlink:label="urg_InterestExpensesCash_639219875317141404" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_InterestExpenseNonoperating_1" xlink:to="urg_InterestExpensesCash_639219875317141404" order="1" use="optional" weight="1" />
    <loc xlink:type="locator" xlink:href="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd#us-gaap_PaidInKindInterest" xlink:label="us-gaap_PaidInKindInterest_639219875317141404" />
    <calculationArc xlink:type="arc" xlink:arcrole="https://xbrl.org/2023/arcrole/summation-item" xlink:from="us-gaap_InterestExpenseNonoperating_1" xlink:to="us-gaap_PaidInKindInterest_639219875317141404" order="2" use="optional" weight="1" />
  </calculationLink>
</link:linkbase>
