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

    <schemaVersion>X0508</schemaVersion>

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    <periodOfReport>2026-02-27</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001685040</issuerCik>
        <issuerName>Brighthouse Financial, Inc.</issuerName>
        <issuerTradingSymbol>BHF</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001535490</rptOwnerCik>
            <rptOwnerName>Steigerwalt Eric T</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>11225 N COMMUNITY HOUSE RD</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CHARLOTTE</rptOwnerCity>
            <rptOwnerState>NC</rptOwnerState>
            <rptOwnerZipCode>28277</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>1</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
            <officerTitle>President and CEO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <aff10b5One>0</aff10b5One>

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    <footnotes>
        <footnote id="F1">Shares earned under the 2023 Performance Share Unit (&quot;PSUs&quot;) award based on the achievement of performance goals over the 2023-2025 performance period.</footnote>
        <footnote id="F2">Shares withheld to cover tax obligations in connection with the vesting of PSUs.</footnote>
        <footnote id="F3">Payout of shares upon vesting of shares of tranches of Restricted Stock Units (&quot;RSUs&quot;) granted in March 2023, March 2024 and March 2025.</footnote>
        <footnote id="F4">Each RSU represents the contingent right to receive one share of Brighthouse Financial, Inc. common stock.</footnote>
        <footnote id="F5">Shares withheld to cover tax obligations in connection with the vesting of RSUs.</footnote>
        <footnote id="F6">Represents the vesting of the final tranche of the 2023 RSU award.</footnote>
        <footnote id="F7">Represents the vesting of the second of three tranches of the 2024 RSU award. The final tranche will vest on the first business day in March 2027.</footnote>
        <footnote id="F8">Represents the vesting of the first of three tranches of the 2025 RSU award. The remaining tranches will vest in substantially equal installments on the first business day in March 2027 and March 2028.</footnote>
        <footnote id="F9">RSUs awarded in 2026 vest in three substantially equal installments on the first business day in March 2027, March 2028 and March 2029.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Jacob M. Jenkelowitz, Attorney-in-Fact, on behalf of Eric T. Steigerwalt</signatureName>
        <signatureDate>2026-03-02</signatureDate>
    </ownerSignature>
</ownershipDocument>
