Convert megajoules (MJ) to watt-hours (Wh).
Edit either value. Decimals and scientific notation supported.
No units found. Try a name or symbol.
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1 MJ ≈ 277.7777778 Wh
Precision changes displayed rounding, not calculation accuracy.
Wh = MJ × 277.777777777778Wh = MJ × 277.777777777778
Multiply the MJ reading by 277.777777777778.
1 MJ ≈ 277.7777778 Wh
1 × 277.777777777778 ≈ 277.7777778
3.6 MJ ≈ 1000 Wh
3.6 × 277.777777777778 ≈ 1000
No. A watt-hour measures energy; a watt measures power. One watt-hour is the energy transferred at one watt for one hour, equal to 3,600 joules.
Fixed reference · Megajoule to Watt-hour
Reference values use this page’s named pair and default context. Calculator precision and font settings do not change this table.
| Megajoule (MJ) | Watt-hour (Wh) |
|---|---|
| 0 | 0 |
| 0.1 | 27.77777778 |
| 0.5 | 138.8888889 |
| 1 | 277.7777778 |
| 2 | 555.5555556 |
| 5 | 1388.888889 |
| 10 | 2777.777778 |
| 25 | 6944.444444 |
| 50 | 13888.88889 |
| 100 | 27777.77778 |
| 1000 | 277777.7778 |
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