Convert joules to watt hours and Wh to joules instantly. Bidirectional energy converter with formula and common values.
Divide the joule value by 3,600 to get watt hours. Both are energy units; the watt hour is commonly used for battery capacity and small-scale energy measurements.
| Joules | Watt Hours |
|---|---|
| 3,600 | 1.000 |
| 7,200 | 2.000 |
| 18,000 | 5.000 |
| 36,000 | 10.00 |
| 180,000 | 50.00 |
| 360,000 | 100.0 |
| 1,800,000 | 500.0 |
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One joule equals approximately 0.000277778 watt hours. Since 1 Wh = 3,600 J, a joule is a very small fraction of a watt hour.
Divide the joule value by 3,600 (or multiply by 0.000277778). For example, 7,200 J ÷ 3,600 = 2 Wh.
A watt hour is the energy delivered by one watt of power sustained for one hour. It equals 3,600 joules. Battery capacities for small electronics are often rated in Wh or mWh.
Watt hours are convenient for small-scale energy: batteries, portable devices, and solar panels. Kilowatt hours are used for household and industrial electricity consumption.