Worked example
100 kWh = 360 MJ, because 1 kWh = 3.6 MJ.
Conversion table
| From | MJ | kWh | Btu | kcal | toe |
|---|---|---|---|---|---|
| 1 MJ | 1 | 0.277778 | 947.817 | 239.006 | 2.3885 × 10⁻⁵ |
| 1 kWh | 3.6 | 1 | 3412.14 | 860.421 | 8.5985 × 10⁻⁵ |
| 1 Btu | 0.00105506 | 0.000293071 | 1 | 0.252164 | 2.52 × 10⁻⁸ |
| 1 kcal | 0.004184 | 0.00116222 | 3.96567 | 1 | 9.9933 × 10⁻⁸ |
| 1 toe | 41868 | 11630 | 3.9683 × 10⁷ | 1.0007 × 10⁷ | 1 |
Every unit on this page
| Unit | Name | In J |
|---|---|---|
| J | joule | 1 |
| kJ | kilojoule | 1000 |
| MJ | megajoule | 1000000 |
| GJ | gigajoule | 1 × 10⁹ |
| Wh | watt hour | 3600 |
| kWh | kilowatt hour | 3600000 |
| MWh | megawatt hour | 3.6 × 10⁹ |
| Btu | British thermal unit (IT) | 1055.06 |
| kcal | kilocalorie (thermochemical) | 4184 |
| toe | tonne of oil equivalent (41.868 GJ) | 4.1868 × 10¹⁰ |
FAQ
How many megajoules are in a kilowatt-hour?
Exactly 3.6 MJ.
What is a tonne of oil equivalent?
The converter uses 41.868 GJ, the conventional value of one toe.