How to convert megajoules to kilowatt-hours
kWh = MJ × 0.2777777778
Example: 5 MJ × 0.2777777778 = 1.388888889 kWh
Megajoules to Kilowatt-hours table
| Megajoules (MJ) | Kilowatt-hours (kWh) |
|---|---|
| 0.5 MJ | 0.13888889 kWh |
| 1 MJ | 0.27777778 kWh |
| 2 MJ | 0.55555556 kWh |
| 3 MJ | 0.83333333 kWh |
| 4 MJ | 1.1111111 kWh |
| 5 MJ | 1.3888889 kWh |
| 6 MJ | 1.6666667 kWh |
| 7 MJ | 1.9444444 kWh |
| 8 MJ | 2.2222222 kWh |
| 9 MJ | 2.5 kWh |
| 10 MJ | 2.7777778 kWh |
| 15 MJ | 4.1666667 kWh |
| 20 MJ | 5.5555556 kWh |
| 25 MJ | 6.9444444 kWh |
| 30 MJ | 8.3333333 kWh |
| 40 MJ | 11.111111 kWh |
| 50 MJ | 13.888889 kWh |
| 75 MJ | 20.833333 kWh |
| 100 MJ | 27.777778 kWh |
| 250 MJ | 69.444444 kWh |
| 500 MJ | 138.88889 kWh |
| 1,000 MJ | 277.77778 kWh |
About these units
Megajoules (MJ): A megajoule is 1,000,000 joules, used for fuel energy and industrial processes.
Kilowatt-hours (kWh): A kilowatt-hour is 3.6 megajoules – the unit on electricity bills.
Frequently asked questions
How many kilowatt-hours are in 1 megajoule?
1 megajoule (MJ) equals 0.2777777778 kilowatt-hours (kWh).
How do I convert MJ to kWh?
Multiply the value in megajoules by 0.2777777778. For example, 5 MJ × 0.2777777778 = 1.388888889 kWh.
How do I convert kilowatt-hours back to megajoules?
Multiply by 3.6 (or divide by 0.2777777778). 1 kWh = 3.6 MJ.
What is a megajoule?
A megajoule is 1,000,000 joules, used for fuel energy and industrial processes.
Conversion factors come from exact international definitions (NIST SP 811, BIPM) where they exist. Results show up to 10 significant digits. Need every energy unit at once? Use the Energy Converter.