About the Energy Converter
This free online energy converter lets you convert between all common units instantly. Simply enter a value, choose the units you want to convert from and to, and the result updates automatically as you type — no button clicks required.
Supported Units
- Joule (J)
- Kilojoule (kJ)
- Calorie (cal)
- Kilocalorie (kcal)
- Watt-hour (Wh)
- Kilowatt-hour (kWh)
- British Thermal Unit (BTU)