Kilojoule to Kilowatt Hour Converter (kJ to kWh)
1 kilojoule = 0.000277778 kilowatt hour. One kilowatt-hour is exactly 3,600 kilojoules (3.6 MJ).
Result
7,200 kJ = 2 kWh
How to convert kilojoule to kilowatt hour
One kilowatt-hour is exactly 3,600 kilojoules (3.6 MJ). Electricity bills charge in kWh, while the energy content of fuels and appliances may be given in kJ or MJ.
Formula
kWh = kJ × 0.000277778
Worked example
7,200 kJ × 0.000277778 = 2 kWh
Kilojoule to Kilowatt Hour quick-reference table
| Kilojoule (kJ) | Kilowatt Hour (kWh) |
|---|---|
| 1,000 kJ | 0.277778 kWh |
| 3,600 kJ | 1 kWh |
| 7,200 kJ | 2 kWh |
| 10,000 kJ | 2.77778 kWh |
| 36,000 kJ | 10 kWh |
| 100,000 kJ | 27.7778 kWh |
Real-life examples
7,200 kJ is 2 kWh, about the energy to run a 2 kW heater for one hour.
Frequently asked questions
How many kJ is a kWh?
One kWh is exactly 3,600 kJ, since 1 kW x 3,600 s = 3,600 kJ.
How many kWh is 1 MJ?
One MJ is 0.2778 kWh.
What is 1 kilojoule in kilowatt hour?
1 kilojoule = 0.000277778 kilowatt hour (kJ to kWh).
What is the formula to convert kJ to kWh?
kWh = kJ × 0.000277778. For example, 7,200 kJ × 0.000277778 = 2 kWh.
How do I convert kWh back to kJ?
Use the reverse converter: 1 kilowatt hour = 3,600 kilojoule. Check: 2 kWh converts back to 7,200 kJ.
Reverse conversion
Need the other direction? Kilowatt Hour to Kilojoule converter (kWh to kJ): 1 kilowatt hour = 3,600 kilojoule.
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