Handy Units
kWh to MegajouleskWh → MJ
1 kWh = 3.6 MJ · 1 MJ = 0.277778 kWh
Formula
MJ = kWh × 3.6
Example: 10 kWh = 10 × 3.6 = 36 MJ
These units differ only by a fixed factor: multiply by it to convert, divide to go back. The factors are exact international definitions (for example 1 inch = 2.54 cm exactly); results are rounded only for display.
kWh and Megajoules chart
| kWh (kWh) | Megajoules (MJ) |
|---|---|
| 1 kWh | 3.6 MJ |
| 2 kWh | 7.2 MJ |
| 5 kWh | 18 MJ |
| 10 kWh | 36 MJ |
| 50 kWh | 180 MJ |
| 100 kWh | 360 MJ |
| 1,000 kWh | 3,600 MJ |
| Megajoules (MJ) | kWh (kWh) |
|---|---|
| 1 MJ | 0.277778 kWh |
| 3.6 MJ | 1 kWh |
| 10 MJ | 2.77778 kWh |
| 36 MJ | 10 kWh |
| 100 MJ | 27.7778 kWh |
| 1,000 MJ | 277.778 kWh |
About these units
Kilowatt-hour (kWh)Kilowatt-hours, the unit on electricity bills: 1 kWh = 3.6 MJ.
Megajoule (MJ)Megajoules: 1 MJ = one million joules, and 1 kWh = 3.6 MJ. Used for gas and food energy.
Questions
How many Megajoules are in 1 kWh?
1 kWh = 3.6 MJ.
How many kWh are in 1 Megajoules?
1 MJ = 0.277778 kWh.