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Energy
Watt-hours to Kilojoules
Convert watt-hours (Wh) to kilojoules (kJ). Type a value below to see the result update instantly. Reference table and formula included.
Calculator
1 Wh = 3.6 kJ
Watt-hours to Kilojoules Conversion Table
Common values, ready to copy:
| watt-hours | kilojoules |
|---|---|
| 1 Wh | 3.6 kJ |
| 2 Wh | 7.2 kJ |
| 5 Wh | 18 kJ |
| 10 Wh | 36 kJ |
| 25 Wh | 90 kJ |
| 50 Wh | 180 kJ |
| 100 Wh | 360 kJ |
| 1,000 Wh | 3600 kJ |
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Formula
kilojoules = watt-hours × 3.6
Energy uses the SI joule. Food calories (kcal) are 1,000 small calories: 1 kcal = 4,184 J. 1 kWh = 3.6 MJ = 3,600,000 J. 1 BTU = 1,055.06 J.
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