| All the unit conversions | |||
| Type | System | Unit | Conversion factor |
| Energy (compound parts) | CGS | Erg (erg) | 0.0000001 |
| Imperial | BritishThermalUnit (BTU) | 1055.05585262 | |
| ThermochemicalBritishThermalUnit (thBTU) | 1054.3502644888888888888888889 | ||
| None | Calorie (cal) | 4.1868 | |
| Electronvolt (eV) | 0.0000000000000000001602176621 | ||
| FoodCalorie (kcal) | 4186.8 | ||
| Therm (thm) | 105505600 | ||
| ThermochemicalCalorie (thcal) | 1054.3502644888888888888888889 | ||
| UKTherm (ukthm) | 105505585.257348 | ||
| USTherm (usthm) | 105480400 | ||
| WattHour (Wh) | 3600 | ||
| SI | Joule (J) | 1 | |