Kilojoules to Kilowatt-hours Converter
Convert kilojoules (kJ) to kilowatt-hours (kWh) instantly. Energy conversions link food labels in kJ and kcal, SP Group bills in kWh and air-conditioner capacity in BTU.
Result
- Kilowatt-hours
- 0.000278 kWh
How to use the kilojoules to kilowatt-hours converter
- Enter the kilojoules (kJ).
- The results update as you type, or press Calculate.
- Read the kilowatt-hours first, then the supporting figures below it.
Formula
Kilowatt-hours = kilojoules × 0.0002777778
Worked example
For example, with these inputs:
- Kilojoules (kJ): 1
the calculator returns:
- Kilowatt-hours: 0.000278 kWh
Kilojoules to Kilowatt-hours table
| Kilojoules | Kilowatt-hours |
|---|---|
| 1 kJ | 0.000278 kWh |
| 2 kJ | 0.000556 kWh |
| 5 kJ | 0.001389 kWh |
| 10 kJ | 0.002778 kWh |
| 20 kJ | 0.005556 kWh |
| 25 kJ | 0.006944 kWh |
| 50 kJ | 0.013889 kWh |
| 100 kJ | 0.027778 kWh |
| 250 kJ | 0.069444 kWh |
| 500 kJ | 0.138889 kWh |
| 1,000 kJ | 0.277778 kWh |
About this conversion
Energy conversions link food labels in kJ and kcal, SP Group bills in kWh and air-conditioner capacity in BTU.
Singapore adopted the metric system in the 1970s, replacing imperial units and traditional Chinese measures in most official uses. Metric units are now standard in schools, trade and government, but older units survive in property, markets and imported goods.
For everyday use, three or four significant figures are usually enough. Engineering, science and trade documents may need more, and rounding should happen only at the end of a calculation.
Frequently asked questions
How many kilowatt-hours are in one kilojoule?
1 kJ = 0.000278 kWh.
How do I convert kJ to kWh?
Kilowatt-hours = kilojoules × 0.0002777778.