Megajoules to Watt-hours Converter
1 Megajoule = 277.778 Watt-hours
MJ
Wh
1 MJ = 277.778 Wh. To convert megajoules to watt-hours, multiply by 277.778; to convert back, multiply by 0.0036.
Conversion formula
1 MJ = 277.778 Wh
To convert from Megajoules to Watt-hours, multiply the value in megajoules by 277.778.
| Megajoules (MJ) | Watt-hours (Wh) |
|---|---|
| 0.001 | 0.277778 |
| 0.01 | 2.77778 |
| 0.1 | 27.7778 |
| 1 | 277.778 |
| 2 | 555.556 |
| 5 | 1,388.89 |
| 10 | 2,777.78 |
| 25 | 6,944.44 |
| 50 | 13,888.9 |
| 100 | 27,777.8 |
| 250 | 69,444.4 |
| 500 | 138,889 |
| 1000 | 277,778 |
1 megajoule in every energy unit
| Joules | 1,000,000 J |
| Kilojoules | 1,000 kJ |
| Calories | 239,006 cal |
| Kilocalories | 239.006 kcal |
| Watt-hours | 277.778 Wh |
| Kilowatt-hours | 0.277778 kWh |
| British Thermal Units | 947.817 BTU |
Frequently Asked Questions
How many watt-hours are in 1 megajoule?
1 megajoule equals 277.778 watt-hours. So 10 megajoules are 2,777.78 watt-hours and 100 megajoules are 27,777.8 watt-hours.
How do I convert megajoules to watt-hours by hand?
Multiply the number of megajoules by 277.778. To go the other way, multiply watt-hours by 0.0036 (or divide by 277.778).
How many megajoules are in 1 watt-hour?
1 watt-hour equals 0.0036 megajoules.