Energy converters
72 direct conversions between 9 energy units. Every page includes a live converter, the formula and a full conversion table.
Units covered
| Unit | Symbol | In joules |
|---|---|---|
| Joule | J | 1 |
| Kilojoule | kJ | 1,000 |
| Calorie | cal | 4.184 |
| Kilocalorie | kcal | 4,184 |
| Watt hour | Wh | 3,600 |
| Kilowatt hour | kWh | 3,600,000 |
| British thermal unit | BTU | 1,055.056 |
| Electronvolt | eV | 1.602177e-19 |
| Foot pound | ft⋅lb | 1.355818 |
All energy conversions
- Joules to Kilojoules
- Joules to Calories
- Joules to Kilocalories
- Joules to Watt Hours
- Joules to Kilowatt Hours
- Joules to British Thermal Units
- Joules to Electronvolts
- Joules to Foot Pounds
- Kilojoules to Joules
- Kilojoules to Calories
- Kilojoules to Kilocalories
- Kilojoules to Watt Hours
- Kilojoules to Kilowatt Hours
- Kilojoules to British Thermal Units
- Kilojoules to Electronvolts
- Kilojoules to Foot Pounds
- Calories to Joules
- Calories to Kilojoules
- Calories to Kilocalories
- Calories to Watt Hours
- Calories to Kilowatt Hours
- Calories to British Thermal Units
- Calories to Electronvolts
- Calories to Foot Pounds
- Kilocalories to Joules
- Kilocalories to Kilojoules
- Kilocalories to Calories
- Kilocalories to Watt Hours
- Kilocalories to Kilowatt Hours
- Kilocalories to British Thermal Units
- Kilocalories to Electronvolts
- Kilocalories to Foot Pounds
- Watt Hours to Joules
- Watt Hours to Kilojoules
- Watt Hours to Calories
- Watt Hours to Kilocalories
- Watt Hours to Kilowatt Hours
- Watt Hours to British Thermal Units
- Watt Hours to Electronvolts
- Watt Hours to Foot Pounds
- Kilowatt Hours to Joules
- Kilowatt Hours to Kilojoules
- Kilowatt Hours to Calories
- Kilowatt Hours to Kilocalories
- Kilowatt Hours to Watt Hours
- Kilowatt Hours to British Thermal Units
- Kilowatt Hours to Electronvolts
- Kilowatt Hours to Foot Pounds
- British Thermal Units to Joules
- British Thermal Units to Kilojoules
- British Thermal Units to Calories
- British Thermal Units to Kilocalories
- British Thermal Units to Watt Hours
- British Thermal Units to Kilowatt Hours
- British Thermal Units to Electronvolts
- British Thermal Units to Foot Pounds
- Electronvolts to Joules
- Electronvolts to Kilojoules
- Electronvolts to Calories
- Electronvolts to Kilocalories
- Electronvolts to Watt Hours
- Electronvolts to Kilowatt Hours
- Electronvolts to British Thermal Units
- Electronvolts to Foot Pounds
- Foot Pounds to Joules
- Foot Pounds to Kilojoules
- Foot Pounds to Calories
- Foot Pounds to Kilocalories
- Foot Pounds to Watt Hours
- Foot Pounds to Kilowatt Hours
- Foot Pounds to British Thermal Units
- Foot Pounds to Electronvolts