Energy Converter

Convert between all common energy units instantly.

Conversions
Joule (J)3,600,000
Kilojoule (kJ)3,600
Calorie (cal)860,420.650096
Kilocalorie (kcal)860.42065
Watt-hour (Wh)1,000
BTU3,412.12822
Foot-pound (ft⋅lbf)2,655,219.719432
Electron-volt (eV)2.2469e+25

How to Use

Enter a numeric value and select the source energy unit from the dropdown. All equivalent values in other energy units will be displayed instantly below. The converter uses joules as the base unit for accurate conversions.

FAQ

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