Energy Converter
Convert joules, calories, kilowatt hours, BTU and electronvolts.
To
1 kWh = 3.6 MJ
Popular energy conversions
Energy unit reference
Every supported unit expressed in joules (J).
| Unit | Symbol | 1 unit in J |
|---|---|---|
| Joules | J | 1 |
| Kilojoules | kJ | 1000 |
| Megajoules | MJ | 1000000 |
| Calories | cal | 4.184 |
| Kilocalories | kcal | 4184 |
| Watt Hours | Wh | 3600 |
| Kilowatt Hours | kWh | 3600000 |
| British Thermal Units | BTU | 1055.05585 |
| Foot-Pounds | ft·lb | 1.35581795 |
| Electronvolts | eV | 1.602177e-19 |
| Therms | thm | 105505585 |
Frequently asked questions
- Which energy units can I convert?
- This converter supports 11 units including joules, kilojoules, megajoules, calories, kilocalories, watt hours.
- How accurate is the energy converter?
- Conversions use internationally defined factors and are calculated at full double precision, then rounded for readability.
- Do I need an account to use VAConverter?
- No. There is no sign-up, no tracking of your inputs, and every conversion runs in your browser.