Table Of Contents
Megajoule to kilowatt-hours Conversion
1 megajoule (MJ) is equal to 0.2777777778 kilowatt-hours (kWh).
1 MJ = 0.2777777778 kWh
or
1 kWh = 3.6 MJ
Formula
To convert a energy from megajoule (MJ) to kilowatt-hours (kWh), divide the energy in megajoule by 3.6
e(kWh) = e(MJ) / 3.6
Examples:
Convert 10 megajoule to kilowatt-hours:
e(kWh) = 10MJ / 3.6 = 2.777777778 kWh
Conversion table
| Megajoule (MJ) | Kilowatt-hours (kWh) |
|---|---|
| 1 MJ | 0.277777778 kWh |
| 2 MJ | 0.555555556 kWh |
| 3 MJ | 0.833333333 kWh |
| 5 MJ | 1.388888889 kWh |
| 10 MJ | 2.777777778 kWh |
| 20 MJ | 5.555555556 kWh |
| 25 MJ | 6.944444444 kWh |
| 50 MJ | 13.888888889 kWh |
| 100 MJ | 27.777777778 kWh |
| 250 MJ | 69.444444444 kWh |
| 500 MJ | 138.888888889 kWh |
| 1000 MJ | 277.777777778 kWh |
| Kilowatt-hours (kWh) | Megajoule (MJ) |
|---|---|
| 1 kWh | 3.6 MJ |
| 2 kWh | 7.2 MJ |
| 3 kWh | 10.8 MJ |
| 5 kWh | 18 MJ |
| 10 kWh | 36 MJ |
| 20 kWh | 72 MJ |
| 25 kWh | 90 MJ |
| 50 kWh | 180 MJ |
| 100 kWh | 360 MJ |
| 250 kWh | 900 MJ |
| 500 kWh | 1800 MJ |
| 1000 kWh | 3600 MJ |
Frequently asked questions
How do I convert megajoule to kilowatt-hours?
Divide the value in megajoule by 3.6 to get the result in kilowatt-hours. For example, 5 MJ ÷ 3.6 = 1.388888889 kWh.
How many kilowatt-hours are in 1 megajoule?
1 megajoule (MJ) is equal to 0.277777778 kilowatt-hours (kWh).
How do I convert kilowatt-hours back to megajoule?
Use the inverse operation: multiply the value in kilowatt-hours by 3.6 to get the result in megajoule.
How accurate is the megajoule to kilowatt-hours conversion?
The converter multiplies by the conversion factor 3.6 and rounds the result to 9 decimal places by default. You can increase or reduce the precision with the digits option on this page.
Sources
Conversion factors are based on internationally recognised standards:
- BIPM — The International System of Units (SI Brochure, 9th edition)
- NIST Guide to the SI, Appendix B.8: Factors for Units Listed Alphabetically (NIST SP 811, 2008 edition)
- NIST Guide to the SI (SP 811), Footnotes (notes 22 and 23)
- CODATA Value: electron volt-joule relationship (NIST Fundamental Physical Constants)