Kilojoules to Watt-hours
Convert kilojoules to watt-hours (kJ to Wh). 1 kJ = 0.277777777778 Wh. Use the calculator, formula and conversion table.
How to convert kilojoules to watt-hours
Multiply the amount in kilojoules by 0.277777777778 to get watt-hours. The displayed factor and results are rounded to 12 significant digits.
Wh = kJ × 0.277777777778Worked example
1 kJ = 0.277777777778 Wh. 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 Watt-hours table
| Kilojoules (kJ) | Watt-hours (Wh) |
|---|---|
| 0 | 0 |
| 1 | 0.277777777778 |
| 5 | 1.38888888889 |
| 10 | 2.77777777778 |
| 25 | 6.94444444444 |
| 100 | 27.7777777778 |
| 1,000 | 277.777777778 |
About this conversion
What is the formula for kilojoules to watt-hours?
Wh = kJ × 0.277777777778. Multiply the amount in kilojoules by 0.277777777778 to get watt-hours. The displayed factor and results are rounded to 12 significant digits.
How do I convert back to kilojoules?
Use the watt-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.