<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2022-11-16</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000052988</issuerCik>
        <issuerName>JACOBS SOLUTIONS INC.</issuerName>
        <issuerTradingSymbol>J</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001456921</rptOwnerCik>
            <rptOwnerName>PRAGADA ROBERT V</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>1999 BRYAN STREET</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>DALLAS</rptOwnerCity>
            <rptOwnerState>TX</rptOwnerState>
            <rptOwnerZipCode>75201</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>0</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President &amp; COO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
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                <value>Common Stock</value>
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            </transactionTimeliness>
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                </transactionShares>
                <transactionPricePerShare>
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                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
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                <sharesOwnedFollowingTransaction>
                    <value>201352</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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                    <value>6762</value>
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                </transactionShares>
                <transactionPricePerShare>
                    <value>124.88</value>
                </transactionPricePerShare>
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                </transactionAcquiredDisposedCode>
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                <sharesOwnedFollowingTransaction>
                    <value>194590</value>
                </sharesOwnedFollowingTransaction>
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                </directOrIndirectOwnership>
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                <sharesOwnedFollowingTransaction>
                    <value>205282</value>
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        <nonDerivativeTransaction>
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                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
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                <transactionShares>
                    <value>24024</value>
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                <transactionPricePerShare>
                    <value>124.88</value>
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                <transactionAcquiredDisposedCode>
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                <sharesOwnedFollowingTransaction>
                    <value>225098</value>
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        <nonDerivativeTransaction>
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                    <value>124.26</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
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                <sharesOwnedFollowingTransaction>
                    <value>223745</value>
                </sharesOwnedFollowingTransaction>
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                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Performance Stock Units</value>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>0.00</value>
                <footnoteId id="F7"/>
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            <transactionDate>
                <value>2022-11-16</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
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                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>17182</value>
                    <footnoteId id="F2"/>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F8"/>
            </exerciseDate>
            <expirationDate>
                <footnoteId id="F8"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>17182</value>
                    <footnoteId id="F2"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
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                <sharesOwnedFollowingTransaction>
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                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
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            <securityTitle>
                <value>Performance Stock Units</value>
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                <value>2022-11-16</value>
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                <transactionFormType>4</transactionFormType>
                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
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            <transactionTimeliness>
                <value></value>
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                <transactionShares>
                    <value>10692</value>
                    <footnoteId id="F4"/>
                </transactionShares>
                <transactionPricePerShare>
                    <footnoteId id="F1"/>
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                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
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            <exerciseDate>
                <footnoteId id="F8"/>
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            <expirationDate>
                <footnoteId id="F8"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Common Stock</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>10692</value>
                    <footnoteId id="F4"/>
                </underlyingSecurityShares>
            </underlyingSecurity>
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                <sharesOwnedFollowingTransaction>
                    <value>0</value>
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    <footnotes>
        <footnote id="F1">Represents distribution of Jacobs common stock upon vesting of performance stock units awarded on November 13, 2019 pursuant to the Company's 1999 Stock Incentive Plan.</footnote>
        <footnote id="F2">The number of performance stock units that vested, and therefore the number of shares of Jacobs common stock issued upon vesting, represents 161.8% of the number of performance stock units initially awarded, with such percentage based on the Company's earnings per share (EPS) growth over the three-year performance period.</footnote>
        <footnote id="F3">Represents number of shares of Jacobs common stock tendered for tax withholding on distribution of Jacobs common stock upon vesting of performance stock units.</footnote>
        <footnote id="F4">The number of performance stock units that vested, and therefore the number of shares of Jacobs common stock issued upon vesting, represents 100.7% of the number of performance stock units initially awarded, with such percentage based on the Company's average return on invested capital (ROIC) over the three-year performance period.</footnote>
        <footnote id="F5">Represents the receipt of restricted stock units pursuant to the Company's 1999 Stock Incentive Plan. Each restricted stock unit represents the right to receive one share of Jacobs common stock.  The restricted stock unit vests in four equal annual installments beginning on the first anniversary of the grant date.</footnote>
        <footnote id="F6">Represents number of shares of Jacobs common stock tendered for tax withholding upon vesting of restricted stock units pursuant to the Company's 1999 Stock Incentive Plan.</footnote>
        <footnote id="F7">Each performance stock unit award represented a contingent right to receive one share of Jacobs common stock.</footnote>
        <footnote id="F8">The performance stock units awarded vested on November 16, 2022.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>Justin Johnson - Attorney-in-Fact for Robert V. Pragada</signatureName>
        <signatureDate>2022-11-18</signatureDate>
    </ownerSignature>
</ownershipDocument>
