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Calculators » Conversion » Energy » J to btu/ Btu to j

Convert between Joule and British thermal unit

Our online tools will provide quick answers to your calculation and conversion needs. On this page, you can convert energy measurements from joule to british thermal unit and british thermal unit to joule.

Enter the value you want to convert, and leave the target field blank.

Result window

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Conversion formula

1 british thermal unit (btu) = 1055.06 joule (j)

1 joule (j) = 0.0009478 british thermal unit (btu)

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