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Energy Converter

Type a value in any box and every other unit updates instantly.

Joules (J)Kilojoules (kJ)Calories (cal)Kilocalories (kcal)Kilowatt-hours (kWh)

All energy conversions

Joules to Kilojoules Joules to Calories Joules to Kilocalories Joules to Kilowatt-hours Kilojoules to Joules Kilojoules to Calories Kilojoules to Kilocalories Kilojoules to Kilowatt-hours Calories to Joules Calories to Kilojoules Calories to Kilocalories Calories to Kilowatt-hours Kilocalories to Joules Kilocalories to Kilojoules Kilocalories to Calories Kilocalories to Kilowatt-hours Kilowatt-hours to Joules Kilowatt-hours to Kilojoules Kilowatt-hours to Calories Kilowatt-hours to Kilocalories

Conversion factors use exact definitions from the International System of Units (SI) and NIST. Results are rounded to 10 significant digits.