Energy Converter

Convert between joules, calories, kilowatt-hours, BTU, electronvolts, and more.

Formula

Base unit: Joule (J). 1 kWh = 3,600,000 J. 1 kcal = 4,184 J. 1 BTU = 1,055.06 J.

Common Conversions

FromTo
1 kWh3,600,000 J
1 kcal4,184 J
1 BTU1,055.06 J
1 kWh3,412.14 BTU
1 cal4.184 J
1 kJ0.2388 kcal
1 Wh3,600 J
1 eV1.602 x 10^-19 J

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Results are for informational purposes only. Verify important calculations independently.