1 kilojoule (kJ) = 0.2777777778 watt-hours (Wh). To convert, divide by 3.6: Wh = kJ ÷ 3.6. For example, 5 kJ = 1.388888889 Wh.
Wh = kJ ÷ 3.6
Kilojoules to watt-hours table
| Kilojoules (kJ) | Watt-hours (Wh) |
|---|---|
| 1 | 0.2777777778 |
| 2 | 0.5555555556 |
| 3 | 0.8333333333 |
| 4 | 1.111111111 |
| 5 | 1.388888889 |
| 10 | 2.777777778 |
| 20 | 5.555555556 |
| 25 | 6.944444444 |
| 50 | 13.88888889 |
| 100 | 27.77777778 |
| 250 | 69.44444444 |
| 500 | 138.8888889 |
| 1,000 | 277.7777778 |
The two units
Kilojoule (kJ). One thousand joules; food labels outside the US often give energy in kJ.
Watt-hour (Wh). One watt for one hour: 3,600 joules. Battery capacities are given in Wh.
Convert kilojoules to other units
- Kilojoules to joules — 1 kJ = 1,000 J
- Kilojoules to calories — 1 kJ = 239.0057361 cal
- Kilojoules to kilocalories — 1 kJ = 0.2390057361 kcal
- Kilojoules to kilowatt-hours — 1 kJ = 0.0002777778 kWh
- Kilojoules to British thermal units — 1 kJ = 0.9478171203 BTU
- Kilojoules to electronvolts — 1 kJ = 6.241509e+21 eV
Convert other units to watt-hours
Questions people ask
- How many watt-hours are in a kilojoule?
- 0.2777777778.
- How do you convert kilojoules to watt-hours?
- Wh = kJ ÷ 3.6. It is the same as dividing by 3.6.
- How do you convert watt-hours back to kilojoules?
- kJ = Wh × 3.6. See watt-hours to kilojoules.
Results use the legal definitions of each unit and are checked against the Pint unit library. Display rounds to 10 significant digits. All unit conversions · More tools
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