EngiRef / Energy conversion
Convert Kilowatt-hours to Joules (kWh to J)
1 kWh = 3600000 J. Convert kilowatt-hours to joules with the exact factor, a common-values table and a free converter.
Conversion factor
J = kWh × 3600000
1 kWh = 3600000 J
Multiply by 3600000 J to go from kilowatt-hours to joules, 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 J table
| Kilowatt-hours (kWh) | Joules (J) |
|---|---|
| 1 kWh | 3600000 J |
| 2 kWh | 7200000 J |
| 5 kWh | 18000000 J |
| 10 kWh | 36000000 J |
| 20 kWh | 72000000 J |
| 50 kWh | 180000000 J |
| 100 kWh | 360000000 J |
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 joules are in one kilowatt-hour?
One kilowatt-hour is 3600000 J, so 100 kWh is 360000000 J.
What is the formula to convert kilowatt-hours to joules?
J = kWh × 3600000. Multiply the value in kilowatt-hours by 3600000 to get joules.
How do I convert joules back to kilowatt-hours?
kWh = J × 2.77778e-7, so 1 J is 2.77778e-7 kWh. The J to kWh page carries the same table in that direction.