EngiRef / Energy conversion
Convert Kilowatt-hours to Kilojoules (kWh to kJ)
1 kWh = 3600 kJ. Convert kilowatt-hours to kilojoules with the exact factor, a common-values table and a free converter.
Conversion factor
kJ = kWh × 3600
1 kWh = 3600 kJ
Multiply by 3600 kJ to go from kilowatt-hours to kilojoules, or divide by it to come back. The factor and every value below are computed by the same converter that runs at /convert, so this page and the tool cannot disagree.
kWh to kJ table
| Kilowatt-hours (kWh) | Kilojoules (kJ) |
|---|---|
| 1 kWh | 3600 kJ |
| 2 kWh | 7200 kJ |
| 5 kWh | 18000 kJ |
| 10 kWh | 36000 kJ |
| 20 kWh | 72000 kJ |
| 50 kWh | 180000 kJ |
| 100 kWh | 360000 kJ |
Every figure is computed at build time by the site’s own converter from the energy unit registry. For a value that is not listed, put it into the interactive converter.
Frequently asked questions
How many kilojoules are in one kilowatt-hour?
One kilowatt-hour is 3600 kJ, so 100 kWh is 360000 kJ.
What is the formula to convert kilowatt-hours to kilojoules?
kJ = kWh × 3600. Multiply the value in kilowatt-hours by 3600 to get kilojoules.
How do I convert kilojoules back to kilowatt-hours?
kWh = kJ × 0.000277777778, so 1 kJ is 0.000277777778 kWh. The kJ to kWh page carries the same table in that direction.