Convert joules (J) 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 J ≈ 0.0002777777778 Wh
Precision changes displayed rounding, not calculation accuracy.
Wh = J ÷ 3600Wh = J ÷ 3600
Divide the J reading by 3600.
1 J ≈ 0.0002777777778 Wh
1 ÷ 3600 ≈ 0.0002777777778
1000 J ≈ 0.2777777778 Wh
1000 ÷ 3600 ≈ 0.2777777778
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 · Joule to Watt-hour
Reference values use this page’s named pair and default context. Calculator precision and font settings do not change this table.
| Joule (J) | Watt-hour (Wh) |
|---|---|
| 0 | 0 |
| 0.1 | 0.00002777777778 |
| 0.5 | 0.0001388888889 |
| 1 | 0.0002777777778 |
| 2 | 0.0005555555556 |
| 5 | 0.001388888889 |
| 10 | 0.002777777778 |
| 25 | 0.006944444444 |
| 50 | 0.01388888889 |
| 100 | 0.02777777778 |
| 1000 | 0.2777777778 |
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