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Calculators » Conversion » Energy » J to kj/ Kj to j

Convert between Joule and Kilojoule

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

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

Result window

Download: Use this energy converter offline with our all-in-one calculator app for Android and iOS.

Conversion formula

1 kilojoule (kj) = 1000 joule (j)

1 joule (j) = 0.001 kilojoule (kj)

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