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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2025 Workiva-->
<!--r:e3e3e64d-a389-4d74-afe1-48728f05e8bc,g:447f2759-df5e-4ea3-887e-513c8d02bc65-->
<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:roleRef roleURI="http://kilroyrealty.com/role/CONSOLIDATEDBALANCESHEETS" xlink:type="simple" xlink:href="krc-20250331.xsd#CONSOLIDATEDBALANCESHEETS"/>
  <link:calculationLink xlink:role="http://kilroyrealty.com/role/CONSOLIDATEDBALANCESHEETS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateInvestmentPropertyAtCost_a2a138ab-2ad4-483d-a885-9c01c33078d4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RealEstateInvestmentPropertyAtCost"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LandAndLandImprovements_96680438-e8ee-40b7-a1f0-9a0899c6e26b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LandAndLandImprovements"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_RealEstateInvestmentPropertyAtCost_a2a138ab-2ad4-483d-a885-9c01c33078d4" xlink:to="loc_us-gaap_LandAndLandImprovements_96680438-e8ee-40b7-a1f0-9a0899c6e26b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InvestmentBuildingAndBuildingImprovements_025ce94f-7b31-4d54-9fa0-7b03f62db0cf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InvestmentBuildingAndBuildingImprovements"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_RealEstateInvestmentPropertyAtCost_a2a138ab-2ad4-483d-a885-9c01c33078d4" xlink:to="loc_us-gaap_InvestmentBuildingAndBuildingImprovements_025ce94f-7b31-4d54-9fa0-7b03f62db0cf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_krc_UndevelopedLandAndConstructionInProgress_11ea91eb-77d8-407b-8095-ad2da5276e64" xlink:href="krc-20250331.xsd#krc_UndevelopedLandAndConstructionInProgress"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_RealEstateInvestmentPropertyAtCost_a2a138ab-2ad4-483d-a885-9c01c33078d4" xlink:to="loc_krc_UndevelopedLandAndConstructionInProgress_11ea91eb-77d8-407b-8095-ad2da5276e64" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LiabilitiesAndStockholdersEquity_4400ed23-cd74-41f7-a2fc-52f57516f53b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LiabilitiesAndStockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_407d29ac-fb1f-4227-85fe-6abd0b735d28" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Liabilities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_4400ed23-cd74-41f7-a2fc-52f57516f53b" xlink:to="loc_us-gaap_Liabilities_407d29ac-fb1f-4227-85fe-6abd0b735d28" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommitmentsAndContingencies_b40f251d-db00-4342-9bc3-2774b02c7954" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommitmentsAndContingencies"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_4400ed23-cd74-41f7-a2fc-52f57516f53b" xlink:to="loc_us-gaap_CommitmentsAndContingencies_b40f251d-db00-4342-9bc3-2774b02c7954" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_180604eb-0f7c-4158-87c0-abdf0b564150" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_4400ed23-cd74-41f7-a2fc-52f57516f53b" xlink:to="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_180604eb-0f7c-4158-87c0-abdf0b564150" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest_ff6cd28d-cd8b-4284-939a-044e50a366ec" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LiabilitiesAndStockholdersEquity_4400ed23-cd74-41f7-a2fc-52f57516f53b" xlink:to="loc_us-gaap_PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest_ff6cd28d-cd8b-4284-939a-044e50a366ec" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_c371200f-d1c4-49db-9f0f-5fac68a077c4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CommonStockValue_45a8a6fe-e4e3-4fc7-8c5e-2b558e96a847" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CommonStockValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_c371200f-d1c4-49db-9f0f-5fac68a077c4" xlink:to="loc_us-gaap_CommonStockValue_45a8a6fe-e4e3-4fc7-8c5e-2b558e96a847" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AdditionalPaidInCapital_8fcaebbb-58c8-43c1-9e18-c0db23df5988" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AdditionalPaidInCapital"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_c371200f-d1c4-49db-9f0f-5fac68a077c4" xlink:to="loc_us-gaap_AdditionalPaidInCapital_8fcaebbb-58c8-43c1-9e18-c0db23df5988" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RetainedEarningsAccumulatedDeficit_c7a7b188-4f72-4a32-8f16-eadc23ec2764" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RetainedEarningsAccumulatedDeficit"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquity_c371200f-d1c4-49db-9f0f-5fac68a077c4" xlink:to="loc_us-gaap_RetainedEarningsAccumulatedDeficit_c7a7b188-4f72-4a32-8f16-eadc23ec2764" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateInvestmentPropertyNet_8f983f8a-9598-4336-a0d2-bc9e981428b3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RealEstateInvestmentPropertyNet"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation_9e1328ab-dbbd-45dc-922b-5529092f419b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_RealEstateInvestmentPropertyNet_8f983f8a-9598-4336-a0d2-bc9e981428b3" xlink:to="loc_us-gaap_RealEstateInvestmentPropertyAccumulatedDepreciation_9e1328ab-dbbd-45dc-922b-5529092f419b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateInvestmentPropertyAtCost_d573be8d-3c15-49be-aa1b-a2b6f38e3610" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RealEstateInvestmentPropertyAtCost"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_RealEstateInvestmentPropertyNet_8f983f8a-9598-4336-a0d2-bc9e981428b3" xlink:to="loc_us-gaap_RealEstateInvestmentPropertyAtCost_d573be8d-3c15-49be-aa1b-a2b6f38e3610" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterest_a6141a7d-f3ae-4476-a7d2-7ab08f7820f7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MinorityInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterestInOperatingPartnerships_1a7a4ff5-ad6f-410b-9d39-63f502676e25" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MinorityInterestInOperatingPartnerships"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_MinorityInterest_a6141a7d-f3ae-4476-a7d2-7ab08f7820f7" xlink:to="loc_us-gaap_MinorityInterestInOperatingPartnerships_1a7a4ff5-ad6f-410b-9d39-63f502676e25" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestInVariableInterestEntity_a5658ee2-424e-4c07-ba62-123c4e794c01" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NoncontrollingInterestInVariableInterestEntity"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_MinorityInterest_a6141a7d-f3ae-4476-a7d2-7ab08f7820f7" xlink:to="loc_us-gaap_NoncontrollingInterestInVariableInterestEntity_a5658ee2-424e-4c07-ba62-123c4e794c01" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_0787acb1-8d28-443c-be32-fdc5b9691522" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StockholdersEquity_592eabf7-457a-401a-ac45-9e18f2365c70" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StockholdersEquity"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_0787acb1-8d28-443c-be32-fdc5b9691522" xlink:to="loc_us-gaap_StockholdersEquity_592eabf7-457a-401a-ac45-9e18f2365c70" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_MinorityInterest_0f5dcb76-55d5-477a-8c58-e6b5a5c65a94" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_MinorityInterest"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest_0787acb1-8d28-443c-be32-fdc5b9691522" xlink:to="loc_us-gaap_MinorityInterest_0f5dcb76-55d5-477a-8c58-e6b5a5c65a94" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Liabilities_76b24c09-3c55-4740-b9e1-93b7d0d9bf8f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Liabilities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_SecuredDebt_7dcc7de7-c8ff-406f-b176-0000c6de2ba8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_SecuredDebt"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_76b24c09-3c55-4740-b9e1-93b7d0d9bf8f" xlink:to="loc_us-gaap_SecuredDebt_7dcc7de7-c8ff-406f-b176-0000c6de2ba8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnsecuredDebt_8a1c13a5-3585-46bb-b0d1-41ab88dde479" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_UnsecuredDebt"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_76b24c09-3c55-4740-b9e1-93b7d0d9bf8f" xlink:to="loc_us-gaap_UnsecuredDebt_8a1c13a5-3585-46bb-b0d1-41ab88dde479" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_0d15cdee-0194-40bf-873a-e935a020fd51" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_76b24c09-3c55-4740-b9e1-93b7d0d9bf8f" xlink:to="loc_us-gaap_AccountsPayableAndAccruedLiabilitiesCurrentAndNoncurrent_0d15cdee-0194-40bf-873a-e935a020fd51" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_krc_GroundLeaseLiability_d17d3fff-ac1e-4f0d-9b79-0a61666f2a0e" xlink:href="krc-20250331.xsd#krc_GroundLeaseLiability"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_76b24c09-3c55-4740-b9e1-93b7d0d9bf8f" xlink:to="loc_krc_GroundLeaseLiability_d17d3fff-ac1e-4f0d-9b79-0a61666f2a0e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DividendsPayableCurrentAndNoncurrent_2ce3d071-885a-43a3-a1ed-9978393de306" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DividendsPayableCurrentAndNoncurrent"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_76b24c09-3c55-4740-b9e1-93b7d0d9bf8f" xlink:to="loc_us-gaap_DividendsPayableCurrentAndNoncurrent_2ce3d071-885a-43a3-a1ed-9978393de306" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_krc_DisposalGroupIncludingDiscontinuedOperationDeferredRevenueAndAcquisitionRelatedIntangibleLiabilities_c3f6f2c4-a5c0-460c-87c7-1ed722d4340f" xlink:href="krc-20250331.xsd#krc_DisposalGroupIncludingDiscontinuedOperationDeferredRevenueAndAcquisitionRelatedIntangibleLiabilities"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_76b24c09-3c55-4740-b9e1-93b7d0d9bf8f" xlink:to="loc_krc_DisposalGroupIncludingDiscontinuedOperationDeferredRevenueAndAcquisitionRelatedIntangibleLiabilities_c3f6f2c4-a5c0-460c-87c7-1ed722d4340f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_krc_DisposalGroupIncludingDiscontinuedOperationAdvanceRentIncludingTenantSecurityDeposits_a3292f7e-2c91-41e0-9111-1fe79090121a" xlink:href="krc-20250331.xsd#krc_DisposalGroupIncludingDiscontinuedOperationAdvanceRentIncludingTenantSecurityDeposits"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Liabilities_76b24c09-3c55-4740-b9e1-93b7d0d9bf8f" xlink:to="loc_krc_DisposalGroupIncludingDiscontinuedOperationAdvanceRentIncludingTenantSecurityDeposits_a3292f7e-2c91-41e0-9111-1fe79090121a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Assets_acb54978-65ab-49f3-b9af-327587139a19" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Assets"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateInvestmentPropertyNet_629b080c-ad97-40be-885d-a6c7453bd41c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RealEstateInvestmentPropertyNet"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_acb54978-65ab-49f3-b9af-327587139a19" xlink:to="loc_us-gaap_RealEstateInvestmentPropertyNet_629b080c-ad97-40be-885d-a6c7453bd41c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_34046440-bcd1-4cd2-9ed6-522cb488b19b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_acb54978-65ab-49f3-b9af-327587139a19" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_34046440-bcd1-4cd2-9ed6-522cb488b19b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_TradingSecurities_51928aba-0625-45ba-94a1-54526003089f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_TradingSecurities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_acb54978-65ab-49f3-b9af-327587139a19" xlink:to="loc_us-gaap_TradingSecurities_51928aba-0625-45ba-94a1-54526003089f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AccountsReceivableNetCurrent_e4bbc6a0-4c56-440a-bb39-d6f728125776" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AccountsReceivableNetCurrent"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_acb54978-65ab-49f3-b9af-327587139a19" xlink:to="loc_us-gaap_AccountsReceivableNetCurrent_e4bbc6a0-4c56-440a-bb39-d6f728125776" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DeferredRentReceivablesNet_dad08f0b-a7d6-4550-a010-5fa72ffc9a16" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DeferredRentReceivablesNet"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_acb54978-65ab-49f3-b9af-327587139a19" xlink:to="loc_us-gaap_DeferredRentReceivablesNet_dad08f0b-a7d6-4550-a010-5fa72ffc9a16" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_krc_DeferredLeasingCostsAndAcquisitionRelatedIntangibleAssetsNet_9bcb3b54-3c97-4be8-b6c2-b8f9b566d86c" xlink:href="krc-20250331.xsd#krc_DeferredLeasingCostsAndAcquisitionRelatedIntangibleAssetsNet"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_acb54978-65ab-49f3-b9af-327587139a19" xlink:to="loc_krc_DeferredLeasingCostsAndAcquisitionRelatedIntangibleAssetsNet_9bcb3b54-3c97-4be8-b6c2-b8f9b566d86c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAsset_c221a4f6-3158-4b96-8a5e-4018e81858c1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseRightOfUseAsset"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_acb54978-65ab-49f3-b9af-327587139a19" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAsset_c221a4f6-3158-4b96-8a5e-4018e81858c1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssets_119f1031-a0e0-49ce-9fa8-fae067c7907d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PrepaidExpenseAndOtherAssets"/>
    <link:calculationArc order="8" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Assets_acb54978-65ab-49f3-b9af-327587139a19" xlink:to="loc_us-gaap_PrepaidExpenseAndOtherAssets_119f1031-a0e0-49ce-9fa8-fae067c7907d" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://kilroyrealty.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS" xlink:type="simple" xlink:href="krc-20250331.xsd#CONSOLIDATEDSTATEMENTSOFOPERATIONS"/>
  <link:calculationLink xlink:role="http://kilroyrealty.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_7bd5f96d-34f9-461f-b76b-8bbd8496a81d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable_e2294f5e-4bbe-4f2f-b0d0-4fe89000e771" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_7bd5f96d-34f9-461f-b76b-8bbd8496a81d" xlink:to="loc_us-gaap_NoncontrollingInterestInNetIncomeLossOperatingPartnershipsRedeemable_e2294f5e-4bbe-4f2f-b0d0-4fe89000e771" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_krc_NetIncomeLossAttributabletoNoncontrollingInterestinConsolidatedSubsidiary_1438b831-bfe3-43be-9d4b-7798bf461621" xlink:href="krc-20250331.xsd#krc_NetIncomeLossAttributabletoNoncontrollingInterestinConsolidatedSubsidiary"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_7bd5f96d-34f9-461f-b76b-8bbd8496a81d" xlink:to="loc_krc_NetIncomeLossAttributabletoNoncontrollingInterestinConsolidatedSubsidiary_1438b831-bfe3-43be-9d4b-7798bf461621" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_f709ce81-e507-461e-84be-12d39569cbb6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_6cac7520-2f13-44eb-86e2-3eef2971a912" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProfitLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_f709ce81-e507-461e-84be-12d39569cbb6" xlink:to="loc_us-gaap_ProfitLoss_6cac7520-2f13-44eb-86e2-3eef2971a912" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_db4d3983-2bee-447c-9927-ed9e445e618c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLossAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_f709ce81-e507-461e-84be-12d39569cbb6" xlink:to="loc_us-gaap_NetIncomeLossAttributableToNoncontrollingInterest_db4d3983-2bee-447c-9927-ed9e445e618c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_09aa07b1-7380-48f8-919e-5a35e41ad607" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingExpenses"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherCostAndExpenseOperating_26a6a75c-8fcc-4838-b733-b1ce1ffda499" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherCostAndExpenseOperating"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_09aa07b1-7380-48f8-919e-5a35e41ad607" xlink:to="loc_us-gaap_OtherCostAndExpenseOperating_26a6a75c-8fcc-4838-b733-b1ce1ffda499" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RealEstateTaxExpense_52300880-36d3-431d-8b75-66d6636575fc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RealEstateTaxExpense"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_09aa07b1-7380-48f8-919e-5a35e41ad607" xlink:to="loc_us-gaap_RealEstateTaxExpense_52300880-36d3-431d-8b75-66d6636575fc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseExpense_416e69c7-5ca9-4922-9b58-90ab4c5954f8" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseExpense"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_09aa07b1-7380-48f8-919e-5a35e41ad607" xlink:to="loc_us-gaap_OperatingLeaseExpense_416e69c7-5ca9-4922-9b58-90ab4c5954f8" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralAndAdministrativeExpense_15eb433f-31cd-4a09-ba67-e46df39efacc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GeneralAndAdministrativeExpense"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_09aa07b1-7380-48f8-919e-5a35e41ad607" xlink:to="loc_us-gaap_GeneralAndAdministrativeExpense_15eb433f-31cd-4a09-ba67-e46df39efacc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseCost_30bc9230-b35f-4fb7-9ffe-478e6e4a017d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseCost"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_09aa07b1-7380-48f8-919e-5a35e41ad607" xlink:to="loc_us-gaap_OperatingLeaseCost_30bc9230-b35f-4fb7-9ffe-478e6e4a017d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationAndAmortization_fc4a8bea-305d-4cb8-b7c8-08a51cf9e8b6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DepreciationAndAmortization"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingExpenses_09aa07b1-7380-48f8-919e-5a35e41ad607" xlink:to="loc_us-gaap_DepreciationAndAmortization_fc4a8bea-305d-4cb8-b7c8-08a51cf9e8b6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_14426b10-3a7a-4cdd-a448-032fed175c1e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProfitLoss"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_6e9ae726-e596-45aa-a1b8-67ff29f52d72" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ProfitLoss_14426b10-3a7a-4cdd-a448-032fed175c1e" xlink:to="loc_us-gaap_NonoperatingIncomeExpense_6e9ae726-e596-45aa-a1b8-67ff29f52d72" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingExpenses_7182e06a-b764-4a7c-959e-0f7a2bc6187d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingExpenses"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ProfitLoss_14426b10-3a7a-4cdd-a448-032fed175c1e" xlink:to="loc_us-gaap_OperatingExpenses_7182e06a-b764-4a7c-959e-0f7a2bc6187d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_3e203193-e201-47b7-8672-481c04fb007d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Revenues"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_ProfitLoss_14426b10-3a7a-4cdd-a448-032fed175c1e" xlink:to="loc_us-gaap_Revenues_3e203193-e201-47b7-8672-481c04fb007d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NonoperatingIncomeExpense_1c5ea866-4390-4bda-8260-6c3befaaa81b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NonoperatingIncomeExpense"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherNonoperatingIncomeExpense_f6be9dcb-8f76-40fb-b36c-ac0f5536196d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherNonoperatingIncomeExpense"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_1c5ea866-4390-4bda-8260-6c3befaaa81b" xlink:to="loc_us-gaap_OtherNonoperatingIncomeExpense_f6be9dcb-8f76-40fb-b36c-ac0f5536196d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_krc_InterestIncomeAndOtherNetInvestmentGainLoss_e223fe90-e4fe-478b-9775-0e243f606cd9" xlink:href="krc-20250331.xsd#krc_InterestIncomeAndOtherNetInvestmentGainLoss"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_1c5ea866-4390-4bda-8260-6c3befaaa81b" xlink:to="loc_krc_InterestIncomeAndOtherNetInvestmentGainLoss_e223fe90-e4fe-478b-9775-0e243f606cd9" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseNonoperating_b67b9b9d-f14b-42a0-9285-d265ae15d5b0" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NonoperatingIncomeExpense_1c5ea866-4390-4bda-8260-6c3befaaa81b" xlink:to="loc_us-gaap_InterestExpenseNonoperating_b67b9b9d-f14b-42a0-9285-d265ae15d5b0" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_Revenues_ec0e1cc6-ab34-4e83-8cb0-6e49de57cbcd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_Revenues"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLeaseIncome_cb2db8af-eead-4bd9-88c0-07060545e440" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseLeaseIncome"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Revenues_ec0e1cc6-ab34-4e83-8cb0-6e49de57cbcd" xlink:to="loc_us-gaap_OperatingLeaseLeaseIncome_cb2db8af-eead-4bd9-88c0-07060545e440" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_5d2361e7-5086-4f5d-aeeb-4784ecb34835" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_Revenues_ec0e1cc6-ab34-4e83-8cb0-6e49de57cbcd" xlink:to="loc_us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax_5d2361e7-5086-4f5d-aeeb-4784ecb34835" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://kilroyrealty.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" xlink:type="simple" xlink:href="krc-20250331.xsd#CONSOLIDATEDSTATEMENTSOFCASHFLOWS"/>
  <link:calculationLink xlink:role="http://kilroyrealty.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_5d2f5521-edd8-421e-a3f4-49436880329a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProfitLoss_5005b18a-c029-42cd-848c-b5bc4b17ab1f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProfitLoss"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_5d2f5521-edd8-421e-a3f4-49436880329a" xlink:to="loc_us-gaap_ProfitLoss_5005b18a-c029-42cd-848c-b5bc4b17ab1f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DepreciationDepletionAndAmortization_f9689a3f-c68a-46f9-8a6d-6d3a659df6f2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DepreciationDepletionAndAmortization"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_5d2f5521-edd8-421e-a3f4-49436880329a" xlink:to="loc_us-gaap_DepreciationDepletionAndAmortization_f9689a3f-c68a-46f9-8a6d-6d3a659df6f2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_krc_DepreciationNonRealEstateAssets_4566571f-735b-40d2-a4cc-2ec2e8c6b07a" xlink:href="krc-20250331.xsd#krc_DepreciationNonRealEstateAssets"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_5d2f5521-edd8-421e-a3f4-49436880329a" xlink:to="loc_krc_DepreciationNonRealEstateAssets_4566571f-735b-40d2-a4cc-2ec2e8c6b07a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_krc_RevenuesDeemedUncollectible_6e53509f-f923-47b1-b0fe-c02aa6486418" xlink:href="krc-20250331.xsd#krc_RevenuesDeemedUncollectible"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_5d2f5521-edd8-421e-a3f4-49436880329a" xlink:to="loc_krc_RevenuesDeemedUncollectible_6e53509f-f923-47b1-b0fe-c02aa6486418" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ShareBasedCompensation_0d20d2f6-0f71-4176-ada0-0bd19e64fc5c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ShareBasedCompensation"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_5d2f5521-edd8-421e-a3f4-49436880329a" xlink:to="loc_us-gaap_ShareBasedCompensation_0d20d2f6-0f71-4176-ada0-0bd19e64fc5c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfFinancingCostsAndDiscounts_e55e8933-3ad3-408a-8e9b-e97fe23486c5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AmortizationOfFinancingCostsAndDiscounts"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_5d2f5521-edd8-421e-a3f4-49436880329a" xlink:to="loc_us-gaap_AmortizationOfFinancingCostsAndDiscounts_e55e8933-3ad3-408a-8e9b-e97fe23486c5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_AmortizationOfAboveAndBelowMarketLeases_d0d5651b-a0fd-468f-98eb-7def95a3c14c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_AmortizationOfAboveAndBelowMarketLeases"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_5d2f5521-edd8-421e-a3f4-49436880329a" xlink:to="loc_us-gaap_AmortizationOfAboveAndBelowMarketLeases_d0d5651b-a0fd-468f-98eb-7def95a3c14c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_krc_NoncashAmortizationOfDeferredRevenueRelatedToTenantFundedTenantImprovements_8a0681b2-2102-4cd6-b583-ac3abcb13698" xlink:href="krc-20250331.xsd#krc_NoncashAmortizationOfDeferredRevenueRelatedToTenantFundedTenantImprovements"/>
    <link:calculationArc order="8" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_5d2f5521-edd8-421e-a3f4-49436880329a" xlink:to="loc_krc_NoncashAmortizationOfDeferredRevenueRelatedToTenantFundedTenantImprovements_8a0681b2-2102-4cd6-b583-ac3abcb13698" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_StraightLineRent_dd4d35a4-d448-47f3-a55b-55521b298f99" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_StraightLineRent"/>
    <link:calculationArc order="9" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_5d2f5521-edd8-421e-a3f4-49436880329a" xlink:to="loc_us-gaap_StraightLineRent_dd4d35a4-d448-47f3-a55b-55521b298f99" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense_3119e327-9227-4efb-be7c-50d440895867" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense"/>
    <link:calculationArc order="10" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_5d2f5521-edd8-421e-a3f4-49436880329a" xlink:to="loc_us-gaap_OperatingLeaseRightOfUseAssetAmortizationExpense_3119e327-9227-4efb-be7c-50d440895867" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingAssets_f2cd2507-5594-4e67-b64e-38fb89d51d8a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInOperatingAssets"/>
    <link:calculationArc order="11" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_5d2f5521-edd8-421e-a3f4-49436880329a" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingAssets_f2cd2507-5594-4e67-b64e-38fb89d51d8a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_IncreaseDecreaseInOperatingLiabilities_363cfa96-465e-4b00-8780-fec9409d8243" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_IncreaseDecreaseInOperatingLiabilities"/>
    <link:calculationArc order="12" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_5d2f5521-edd8-421e-a3f4-49436880329a" xlink:to="loc_us-gaap_IncreaseDecreaseInOperatingLiabilities_363cfa96-465e-4b00-8780-fec9409d8243" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_dba619c7-9c45-47e7-b191-5979c4effaab" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfFinancingCosts_30a3cb15-b5ec-4fc6-afd8-ed6cf1b0bbea" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsOfFinancingCosts"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_dba619c7-9c45-47e7-b191-5979c4effaab" xlink:to="loc_us-gaap_PaymentsOfFinancingCosts_30a3cb15-b5ec-4fc6-afd8-ed6cf1b0bbea" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfUnsecuredDebt_73ef5ae7-8dcd-42eb-9ee7-29c9b952debb" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RepaymentsOfUnsecuredDebt"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_dba619c7-9c45-47e7-b191-5979c4effaab" xlink:to="loc_us-gaap_RepaymentsOfUnsecuredDebt_73ef5ae7-8dcd-42eb-9ee7-29c9b952debb" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToMinorityShareholders_bf1d64c8-1f70-4347-bfa9-a97b6583f795" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsToMinorityShareholders"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_dba619c7-9c45-47e7-b191-5979c4effaab" xlink:to="loc_us-gaap_PaymentsToMinorityShareholders_bf1d64c8-1f70-4347-bfa9-a97b6583f795" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsOfDividendsCommonStock_fc5f2306-88c8-4ad5-82aa-032284e88d23" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsOfDividendsCommonStock"/>
    <link:calculationArc order="4" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_dba619c7-9c45-47e7-b191-5979c4effaab" xlink:to="loc_us-gaap_PaymentsOfDividendsCommonStock_fc5f2306-88c8-4ad5-82aa-032284e88d23" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RepaymentsOfSecuredDebt_1788b3ad-84ef-4e70-be19-d17f0473edcc" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RepaymentsOfSecuredDebt"/>
    <link:calculationArc order="5" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_dba619c7-9c45-47e7-b191-5979c4effaab" xlink:to="loc_us-gaap_RepaymentsOfSecuredDebt_1788b3ad-84ef-4e70-be19-d17f0473edcc" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_6a372917-943b-467c-90bf-238ecdc570ab" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation"/>
    <link:calculationArc order="6" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_dba619c7-9c45-47e7-b191-5979c4effaab" xlink:to="loc_us-gaap_PaymentsRelatedToTaxWithholdingForShareBasedCompensation_6a372917-943b-467c-90bf-238ecdc570ab" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ProceedsFromIssuanceOfUnsecuredDebt_4596f2a7-c795-447d-82c5-cde5da09ea68" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ProceedsFromIssuanceOfUnsecuredDebt"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_dba619c7-9c45-47e7-b191-5979c4effaab" xlink:to="loc_us-gaap_ProceedsFromIssuanceOfUnsecuredDebt_4596f2a7-c795-447d-82c5-cde5da09ea68" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_c96682aa-6508-4164-a281-3553c986082b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_a74f2b7c-e7a8-4d51-8320-ea43ba3477f5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInFinancingActivities"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_c96682aa-6508-4164-a281-3553c986082b" xlink:to="loc_us-gaap_NetCashProvidedByUsedInFinancingActivities_a74f2b7c-e7a8-4d51-8320-ea43ba3477f5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_0bf3ef5d-c119-464c-bbb6-9f72ae4ccb06" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_c96682aa-6508-4164-a281-3553c986082b" xlink:to="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_0bf3ef5d-c119-464c-bbb6-9f72ae4ccb06" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_0516d413-60c7-4729-8935-6f77b5ae2ac1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInOperatingActivities"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect_c96682aa-6508-4164-a281-3553c986082b" xlink:to="loc_us-gaap_NetCashProvidedByUsedInOperatingActivities_0516d413-60c7-4729-8935-6f77b5ae2ac1" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_3b3655c6-7f71-41d9-a8e7-2525a27e06d2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetCashProvidedByUsedInInvestingActivities"/>
    <link:loc xlink:type="locator" xlink:label="loc_krc_ProceedsFromPaymentsForMaturityPurchasesOfCertificatesOfDeposit_27867975-8423-443f-b434-13bde1b8c628" xlink:href="krc-20250331.xsd#krc_ProceedsFromPaymentsForMaturityPurchasesOfCertificatesOfDeposit"/>
    <link:calculationArc order="1" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_3b3655c6-7f71-41d9-a8e7-2525a27e06d2" xlink:to="loc_krc_ProceedsFromPaymentsForMaturityPurchasesOfCertificatesOfDeposit_27867975-8423-443f-b434-13bde1b8c628" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsForCapitalImprovements_790934bd-4a5a-4f75-bea4-808ca2e93fee" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsForCapitalImprovements"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_3b3655c6-7f71-41d9-a8e7-2525a27e06d2" xlink:to="loc_us-gaap_PaymentsForCapitalImprovements_790934bd-4a5a-4f75-bea4-808ca2e93fee" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PaymentsToDevelopRealEstateAssets_f3197555-f3a2-48f7-bb9e-50f88174fdc4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PaymentsToDevelopRealEstateAssets"/>
    <link:calculationArc order="3" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_NetCashProvidedByUsedInInvestingActivities_3b3655c6-7f71-41d9-a8e7-2525a27e06d2" xlink:to="loc_us-gaap_PaymentsToDevelopRealEstateAssets_f3197555-f3a2-48f7-bb9e-50f88174fdc4" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://kilroyrealty.com/role/CONSOLIDATEDBALANCESHEETSKILROYREALTYLP" xlink:type="simple" xlink:href="krc-20250331.xsd#CONSOLIDATEDBALANCESHEETSKILROYREALTYLP"/>
  <link:calculationLink xlink:role="http://kilroyrealty.com/role/CONSOLIDATEDBALANCESHEETSKILROYREALTYLP" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest_543549be-1296-4b49-8443-1fb0c474a6d4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_GeneralPartnersCapitalAccount_3f8aad44-425b-4732-adfe-f1d664eafb17" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_GeneralPartnersCapitalAccount"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest_543549be-1296-4b49-8443-1fb0c474a6d4" xlink:to="loc_us-gaap_GeneralPartnersCapitalAccount_3f8aad44-425b-4732-adfe-f1d664eafb17" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PartnersCapitalAttributableToNoncontrollingInterest_60b9699b-605c-4fd3-b2e8-1cb23352135d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PartnersCapitalAttributableToNoncontrollingInterest"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PartnersCapitalIncludingPortionAttributableToNoncontrollingInterest_543549be-1296-4b49-8443-1fb0c474a6d4" xlink:to="loc_us-gaap_PartnersCapitalAttributableToNoncontrollingInterest_60b9699b-605c-4fd3-b2e8-1cb23352135d" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://kilroyrealty.com/role/PrepaidExpensesandOtherAssetsNetDetails" xlink:type="simple" xlink:href="krc-20250331.xsd#PrepaidExpensesandOtherAssetsNetDetails"/>
  <link:calculationLink xlink:role="http://kilroyrealty.com/role/PrepaidExpensesandOtherAssetsNetDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseAndOtherAssets_296e5438-18aa-4cf6-8d69-2832d4f878b9" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PrepaidExpenseAndOtherAssets"/>
    <link:loc xlink:type="locator" xlink:label="loc_krc_FurnitureAndFixturesNet_25d8a267-fcb0-414c-9974-f69a4b54df3a" xlink:href="krc-20250331.xsd#krc_FurnitureAndFixturesNet"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssets_296e5438-18aa-4cf6-8d69-2832d4f878b9" xlink:to="loc_krc_FurnitureAndFixturesNet_25d8a267-fcb0-414c-9974-f69a4b54df3a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_PrepaidExpenseCurrentAndNoncurrent_3b84a7c6-6b91-4321-92a4-de4955dc815f" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_PrepaidExpenseCurrentAndNoncurrent"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssets_296e5438-18aa-4cf6-8d69-2832d4f878b9" xlink:to="loc_us-gaap_PrepaidExpenseCurrentAndNoncurrent_3b84a7c6-6b91-4321-92a4-de4955dc815f" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_UnamortizedDebtIssuanceExpense_13adc3c6-3457-43ab-8d3e-85a85bf8fb8c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_UnamortizedDebtIssuanceExpense"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssets_296e5438-18aa-4cf6-8d69-2832d4f878b9" xlink:to="loc_us-gaap_UnamortizedDebtIssuanceExpense_13adc3c6-3457-43ab-8d3e-85a85bf8fb8c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OtherAssets_ba5cb07a-6460-45d1-bb9a-e78c8b28d1bf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OtherAssets"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_PrepaidExpenseAndOtherAssets_296e5438-18aa-4cf6-8d69-2832d4f878b9" xlink:to="loc_us-gaap_OtherAssets_ba5cb07a-6460-45d1-bb9a-e78c8b28d1bf" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://kilroyrealty.com/role/SecuredandUnsecuredDebtoftheOperatingPartnershipUnsecuredSeniorNotesUnsecuredRevolvingCreditFacilityandTermLoanFacilityDetails" xlink:type="simple" xlink:href="krc-20250331.xsd#SecuredandUnsecuredDebtoftheOperatingPartnershipUnsecuredSeniorNotesUnsecuredRevolvingCreditFacilityandTermLoanFacilityDetails"/>
  <link:calculationLink xlink:role="http://kilroyrealty.com/role/SecuredandUnsecuredDebtoftheOperatingPartnershipUnsecuredSeniorNotesUnsecuredRevolvingCreditFacilityandTermLoanFacilityDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_f5c2c98c-6d4e-4f56-b941-f5b7c54b40b4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCredit_ff46bef2-ba21-426f-82cc-198ef6eb483a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LineOfCredit"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_f5c2c98c-6d4e-4f56-b941-f5b7c54b40b4" xlink:to="loc_us-gaap_LineOfCredit_ff46bef2-ba21-426f-82cc-198ef6eb483a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_3e94efb4-99c7-4912-839d-96ed10b07ea4" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LineOfCreditFacilityMaximumBorrowingCapacity_f5c2c98c-6d4e-4f56-b941-f5b7c54b40b4" xlink:to="loc_us-gaap_LineOfCreditFacilityRemainingBorrowingCapacity_3e94efb4-99c7-4912-839d-96ed10b07ea4" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://kilroyrealty.com/role/SecuredandUnsecuredDebtoftheOperatingPartnershipDebtMaturitiesDetails" xlink:type="simple" xlink:href="krc-20250331.xsd#SecuredandUnsecuredDebtoftheOperatingPartnershipDebtMaturitiesDetails"/>
  <link:calculationLink xlink:role="http://kilroyrealty.com/role/SecuredandUnsecuredDebtoftheOperatingPartnershipDebtMaturitiesDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_204d14d1-d3da-44c2-a39e-bec4cc1a6346" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear_d3346d63-b150-4eec-9596-801509690da5" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_204d14d1-d3da-44c2-a39e-bec4cc1a6346" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalRemainderOfFiscalYear_d3346d63-b150-4eec-9596-801509690da5" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_cac792c9-b136-4227-a12b-780c4d387f8a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_204d14d1-d3da-44c2-a39e-bec4cc1a6346" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths_cac792c9-b136-4227-a12b-780c4d387f8a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_4cac8867-5fca-42b0-979a-76b9eed504fd" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_204d14d1-d3da-44c2-a39e-bec4cc1a6346" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo_4cac8867-5fca-42b0-979a-76b9eed504fd" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_9cbe2114-f802-4cd1-82ef-2a0fc7a35d1a" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_204d14d1-d3da-44c2-a39e-bec4cc1a6346" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree_9cbe2114-f802-4cd1-82ef-2a0fc7a35d1a" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_8f4e5b86-56b4-445b-a1ee-afd5b93628f6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_204d14d1-d3da-44c2-a39e-bec4cc1a6346" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour_8f4e5b86-56b4-445b-a1ee-afd5b93628f6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_f0da98c6-27f2-4324-9102-257b341aace2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_204d14d1-d3da-44c2-a39e-bec4cc1a6346" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive_f0da98c6-27f2-4324-9102-257b341aace2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_1bb22d38-b89f-4e12-b03b-9310ab3174b2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_DebtInstrumentCarryingAmount_204d14d1-d3da-44c2-a39e-bec4cc1a6346" xlink:to="loc_us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive_1bb22d38-b89f-4e12-b03b-9310ab3174b2" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LongTermDebt_cf0f9400-4123-499c-8014-e54488656f32" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LongTermDebt"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentCarryingAmount_411c7afc-69b7-40c6-8ebc-8f558e7dcc62" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentCarryingAmount"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_cf0f9400-4123-499c-8014-e54488656f32" xlink:to="loc_us-gaap_DebtInstrumentCarryingAmount_411c7afc-69b7-40c6-8ebc-8f558e7dcc62" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_83fad32e-c835-4821-ab06-c73421bd0a14" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LongTermDebt_cf0f9400-4123-499c-8014-e54488656f32" xlink:to="loc_us-gaap_DebtInstrumentUnamortizedDiscountPremiumAndDebtIssuanceCostsNet_83fad32e-c835-4821-ab06-c73421bd0a14" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://kilroyrealty.com/role/SecuredandUnsecuredDebtoftheOperatingPartnershipCapitalizedInterestDetails" xlink:type="simple" xlink:href="krc-20250331.xsd#SecuredandUnsecuredDebtoftheOperatingPartnershipCapitalizedInterestDetails"/>
  <link:calculationLink xlink:role="http://kilroyrealty.com/role/SecuredandUnsecuredDebtoftheOperatingPartnershipCapitalizedInterestDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestExpenseNonoperating_a6d32760-61a3-40d0-809b-675e4b30dde2" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestExpenseNonoperating"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestCostsIncurred_87a0e439-1d0d-4760-b0f1-203c20cc5cd6" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestCostsIncurred"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestExpenseNonoperating_a6d32760-61a3-40d0-809b-675e4b30dde2" xlink:to="loc_us-gaap_InterestCostsIncurred_87a0e439-1d0d-4760-b0f1-203c20cc5cd6" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_InterestCostsCapitalizedAdjustment_a4024a17-7238-4504-9e23-beb7be880579" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_InterestCostsCapitalizedAdjustment"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_InterestExpenseNonoperating_a6d32760-61a3-40d0-809b-675e4b30dde2" xlink:to="loc_us-gaap_InterestCostsCapitalizedAdjustment_a4024a17-7238-4504-9e23-beb7be880579" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://kilroyrealty.com/role/RentalIncomeandFutureMinimumRentRentalincomeDetails" xlink:type="simple" xlink:href="krc-20250331.xsd#RentalIncomeandFutureMinimumRentRentalincomeDetails"/>
  <link:calculationLink xlink:role="http://kilroyrealty.com/role/RentalIncomeandFutureMinimumRentRentalincomeDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLeaseIncome_96e3b23b-5d8e-4c50-9370-ec93f51babe7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseLeaseIncome"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseLeaseIncomeLeasePayments_630aa586-91c1-43f6-8ef6-c928625e802b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseLeaseIncomeLeasePayments"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeaseLeaseIncome_96e3b23b-5d8e-4c50-9370-ec93f51babe7" xlink:to="loc_us-gaap_OperatingLeaseLeaseIncomeLeasePayments_630aa586-91c1-43f6-8ef6-c928625e802b" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_OperatingLeaseVariableLeaseIncome_40475864-92ee-4c9d-9bda-bea15e10922c" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_OperatingLeaseVariableLeaseIncome"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeaseLeaseIncome_96e3b23b-5d8e-4c50-9370-ec93f51babe7" xlink:to="loc_us-gaap_OperatingLeaseVariableLeaseIncome_40475864-92ee-4c9d-9bda-bea15e10922c" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_krc_OperatingLeaseIncomeAdjustments_74c97e9f-2f22-4a54-abe9-2018c3f5b598" xlink:href="krc-20250331.xsd#krc_OperatingLeaseIncomeAdjustments"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_OperatingLeaseLeaseIncome_96e3b23b-5d8e-4c50-9370-ec93f51babe7" xlink:to="loc_krc_OperatingLeaseIncomeAdjustments_74c97e9f-2f22-4a54-abe9-2018c3f5b598" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://kilroyrealty.com/role/RentalIncomeandFutureMinimumRentFutureContractualMinimumRentDetails" xlink:type="simple" xlink:href="krc-20250331.xsd#RentalIncomeandFutureMinimumRentFutureContractualMinimumRentDetails"/>
  <link:calculationLink xlink:role="http://kilroyrealty.com/role/RentalIncomeandFutureMinimumRentFutureContractualMinimumRentDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceived_ca43a7e0-3c04-4f45-ba4e-9258d0ae2e93" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceived"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear_9f334e1f-7d04-4ca1-b9d5-9cd03dbfad1d" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceived_ca43a7e0-3c04-4f45-ba4e-9258d0ae2e93" xlink:to="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedRemainderOfFiscalYear_9f334e1f-7d04-4ca1-b9d5-9cd03dbfad1d" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths_ff799825-b543-413a-84cd-6c25d583dccf" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceived_ca43a7e0-3c04-4f45-ba4e-9258d0ae2e93" xlink:to="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedNextTwelveMonths_ff799825-b543-413a-84cd-6c25d583dccf" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears_bff9591a-aba6-4763-b4e2-6e4dfe679036" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears"/>
    <link:calculationArc order="3" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceived_ca43a7e0-3c04-4f45-ba4e-9258d0ae2e93" xlink:to="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedTwoYears_bff9591a-aba6-4763-b4e2-6e4dfe679036" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears_2f4726ae-eac5-4ae8-b4ff-65a49f346853" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears"/>
    <link:calculationArc order="4" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceived_ca43a7e0-3c04-4f45-ba4e-9258d0ae2e93" xlink:to="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedThreeYears_2f4726ae-eac5-4ae8-b4ff-65a49f346853" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears_fbce5afd-e118-4a99-b7d2-60c74d4a9e60" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears"/>
    <link:calculationArc order="5" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceived_ca43a7e0-3c04-4f45-ba4e-9258d0ae2e93" xlink:to="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedFourYears_fbce5afd-e118-4a99-b7d2-60c74d4a9e60" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears_959c0068-48ed-433e-b764-14105f0bc5c7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears"/>
    <link:calculationArc order="6" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceived_ca43a7e0-3c04-4f45-ba4e-9258d0ae2e93" xlink:to="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedFiveYears_959c0068-48ed-433e-b764-14105f0bc5c7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedThereafter_0caa40bf-6a9f-4253-aba9-867ef475c3b1" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_LessorOperatingLeasePaymentsToBeReceivedThereafter"/>
    <link:calculationArc order="7" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceived_ca43a7e0-3c04-4f45-ba4e-9258d0ae2e93" xlink:to="loc_us-gaap_LessorOperatingLeasePaymentsToBeReceivedThereafter_0caa40bf-6a9f-4253-aba9-867ef475c3b1" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://kilroyrealty.com/role/NetIncomeAvailabletoCommonStockholdersPerShareoftheCompanyDetails" xlink:type="simple" xlink:href="krc-20250331.xsd#NetIncomeAvailabletoCommonStockholdersPerShareoftheCompanyDetails"/>
  <link:calculationLink xlink:role="http://kilroyrealty.com/role/NetIncomeAvailabletoCommonStockholdersPerShareoftheCompanyDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_krc_NetIncomeLossAvailableToCommonStockholders_df22e742-2d7b-4f0b-84a5-672bc3308558" xlink:href="krc-20250331.xsd#krc_NetIncomeLossAvailableToCommonStockholders"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_cfca24fb-b464-425b-b19b-166dc1af17a7" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_krc_NetIncomeLossAvailableToCommonStockholders_df22e742-2d7b-4f0b-84a5-672bc3308558" xlink:to="loc_us-gaap_NetIncomeLossAvailableToCommonStockholdersBasic_cfca24fb-b464-425b-b19b-166dc1af17a7" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic_7d50e5ce-12cf-48c3-98a5-3413535d19f3" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic"/>
    <link:calculationArc order="2" weight="-1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_krc_NetIncomeLossAvailableToCommonStockholders_df22e742-2d7b-4f0b-84a5-672bc3308558" xlink:to="loc_us-gaap_ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic_7d50e5ce-12cf-48c3-98a5-3413535d19f3" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_eef11a02-7a6a-4e31-a865-97520eca326b" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_09618807-8b2d-4b9b-bcb9-09f3e0534986" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WeightedAverageNumberOfSharesOutstandingBasic"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_eef11a02-7a6a-4e31-a865-97520eca326b" xlink:to="loc_us-gaap_WeightedAverageNumberOfSharesOutstandingBasic_09618807-8b2d-4b9b-bcb9-09f3e0534986" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_5ecb7c73-439e-4ee7-bd75-8f1fb8860855" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding_eef11a02-7a6a-4e31-a865-97520eca326b" xlink:to="loc_us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment_5ecb7c73-439e-4ee7-bd75-8f1fb8860855" xlink:type="arc"/>
  </link:calculationLink>
  <link:roleRef roleURI="http://kilroyrealty.com/role/SupplementalCashFlowInformationoftheCompanyCashandCashEquivalentsandRestrictedCashDetails" xlink:type="simple" xlink:href="krc-20250331.xsd#SupplementalCashFlowInformationoftheCompanyCashandCashEquivalentsandRestrictedCashDetails"/>
  <link:calculationLink xlink:role="http://kilroyrealty.com/role/SupplementalCashFlowInformationoftheCompanyCashandCashEquivalentsandRestrictedCashDetails" xlink:type="extended">
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_3825e8f7-74a2-4ab7-8bbb-b13053482226" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_78d785c0-1c1d-4cc6-98c0-4320f9210e8e" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_CashAndCashEquivalentsAtCarryingValue"/>
    <link:calculationArc order="1" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_3825e8f7-74a2-4ab7-8bbb-b13053482226" xlink:to="loc_us-gaap_CashAndCashEquivalentsAtCarryingValue_78d785c0-1c1d-4cc6-98c0-4320f9210e8e" xlink:type="arc"/>
    <link:loc xlink:type="locator" xlink:label="loc_us-gaap_RestrictedCashAndCashEquivalents_ae38db71-5617-43f1-9f6a-c50c7f971350" xlink:href="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd#us-gaap_RestrictedCashAndCashEquivalents"/>
    <link:calculationArc order="2" weight="1.0" xlink:arcrole="http://www.xbrl.org/2003/arcrole/summation-item" xlink:from="loc_us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents_3825e8f7-74a2-4ab7-8bbb-b13053482226" xlink:to="loc_us-gaap_RestrictedCashAndCashEquivalents_ae38db71-5617-43f1-9f6a-c50c7f971350" xlink:type="arc"/>
  </link:calculationLink>
</link:linkbase>
