1 kWh = 3.6 MJ
| Unit | Symbol | Value |
|---|---|---|
| Electronvolt | eV | 2.24694 × 10²⁵ |
| Joule | J | 3 600 000 |
| Kilojoule | kJ | 3 600 |
| Megajoule | MJ | 3.6 |
| Watt-hour | Wh | 1 000 |
| Kilowatt-hour | kWh | 1 |
| Calorie (thermochemical) | cal | 860 420.7 |
| Kilocalorie | kcal | 860.4207 |
| British thermal unit | BTU | 3 412.142 |
| Foot-pound force | ft·lbf | 2 655 224 |