Kilojoules to Kilowatt-hours
Convert kilojoules to kilowatt-hours (kJ to kWh). 1 kJ = 0.000277777777778 kWh. Use the calculator, formula and conversion table.
How to convert kilojoules to kilowatt-hours
Multiply the amount in kilojoules by 0.000277777777778 to get kilowatt-hours. The displayed factor and results are rounded to 12 significant digits.
kWh = kJ × 0.000277777777778Worked example
1 kJ = 0.000277777777778 kWh. Change the amount in the calculator above to use your own value.
Units and assumptions
A watt-hour is 3,600 joules. Calories use the thermochemical definition (4.184 J); BTU uses the International Table definition.
Calculator results use floating-point arithmetic and are rounded for display. The reference table below uses up to 12 significant digits.
Kilojoules to Kilowatt-hours table
| Kilojoules (kJ) | Kilowatt-hours (kWh) |
|---|---|
| 0 | 0 |
| 1 | 0.000277777777778 |
| 5 | 0.00138888888889 |
| 10 | 0.00277777777778 |
| 25 | 0.00694444444444 |
| 100 | 0.0277777777778 |
| 1,000 | 0.277777777778 |
About this conversion
What is the formula for kilojoules to kilowatt-hours?
kWh = kJ × 0.000277777777778. Multiply the amount in kilojoules by 0.000277777777778 to get kilowatt-hours. The displayed factor and results are rounded to 12 significant digits.
How do I convert back to kilojoules?
Use the kilowatt-hours to kilojoules calculator to reverse this conversion. You can also use Swap units in the calculator above.
Can I use a different pair of units?
Choose another unit in the calculator, or open the energy converter to browse all supported pairs.