Conversion Factors for Units of Energy
J (joule) and Ws (watt second) are the valid SI units for energy. Nevertheless, in the energy sector a lot of other units
are used. This overview describes the most important units of energy and their conversion factors. The
Units of Energy Calculator that can be started below assists at the calculations.
| Conversion factors for units of energy
|
|
kJ |
kcal |
kWh |
kg ce |
kg oe |
m³ natural gas |
| 1 kJ |
1 |
0.2388 |
0.000278 |
0.000034 |
0.000024 |
0.000032 |
| 1 kcal |
4.1868 |
1 |
0.001163 |
0.000143 |
0.0001 |
0.00013 |
| 1 kWh |
3 600 |
860 |
1 |
0.123 |
0.086 |
0.113 |
| 1 kg ce |
29 308 |
7 000 |
8.14 |
1 |
0.7 |
0.923 |
| 1 kg oe |
41 868 |
10 000 |
11.63 |
1.428 |
1 |
1.319 |
| 1 m³ natural gas |
31 736 |
7 580 |
8.816 |
1.083 |
0.758 |
1 |
| Unit |
Name |
Conversion to kJ or kWh |
| J |
joule |
1 000 J = 1 000 Ws = 1 kJ |
| cal |
calorie |
1 000 cal = 1 kcal = 4.186 kJ |
| Wh |
watt hour |
1 Wh = 3.6 kJ |
| (kg) ce |
(kilogram) coal equivalent |
1 kg ce = 29 308 kJ |
| (kg) oe |
(kilogram) oil equivalent |
1 kg oe = 41 868 kJ |
| m³ natural gas |
cubic meter natural gas |
1 m³ natural gas = 31 736 kJ |
| BTU |
British Thermal Unit |
1 BTU = 0.000293071 kWh = 1.05506 kJ |
| kpm |
kilogram force meter (Kilopondmeter) |
1 kpm = 2.72e-6 kWh = 0.00980665 kJ |
| erg |
erg |
1 erg = 2.78e-14 kWh = 1e-10 kJ |
| eV |
elektron volt |
1 eV = 1.60217733e-19 J = 1.60217733e-22 kJ |
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