Energy conversion
The following utility will enable you to convert energy expressed in one unit to another unit
Energy is generally expressed in joules (J).
The information in the table below provides a method of converting energy from other units to joules.
| Scheme | multiply by |
| British thermal unit (Btu) | 1 055.056 |
| calorie (mean)(cal) | 4.190 02 |
| electronvolt (eV) | 0.000 000 000 000 000 000 160 217 7 |
| erg (erg) | 0.000 000 1 |
| foot poundal | 0.042 140 11 |
| foot pound-force(ft - lbf) | 1.355 818 |
| kilocalorie (mean)(kcal) | 4 190.02 |
| kilowatt hour(kW h) | 3 600 000 |
| quad | 1 055 056 000 000 000 000 |
| therm(EC) | 105 506 000 |
| therm (U.S.) | 105 480 400 |
| ton of TNT (equilvalent energy) | 4 184 000 000 |
| watt hour (W h) | 3 600 |
| watt second | 1 |