kilojoules to kilowatt-hours
Convert kilojoule to kilowatt-hour — instant, free, with the formula shown.
1 kJ=0.000278 kWh
How to convert kilojoule to kilowatt-hour
To convert kilojoule to kilowatt-hour, multiply by 0.00027778:
kWh = kJ × 0.00027778
For example, 10 kJ × 0.000278 = 0.002778 kWh.
kJ to kWh conversion table
| kilojoules (kJ) | kilowatt-hours (kWh) |
|---|---|
| 1 kJ | 0.000278 kWh |
| 2 kJ | 0.000556 kWh |
| 5 kJ | 0.001389 kWh |
| 10 kJ | 0.002778 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 |
| 1000 kJ | 0.277778 kWh |
Other kilojoule conversions
Convert to kilowatt-hour from another unit
kJ to kWh — frequently asked
How many kilowatt-hours are in 1 kilojoule?
1 kilojoule = 0.000278 kilowatt-hours (kJ × 0.000278 = kWh).
What is the formula to convert kilojoule to kilowatt-hour?
Multiply your kilojoule value by 0.00027778 to get kilowatt-hour.
How do I convert 10 kilojoules to kilowatt-hours?
10 kJ = 0.002778 kWh. For 100 kJ the answer is 0.027778 kWh. Use the calculator on this page for any other value.
When to convert kilojoule to kilowatt-hour
1Electricity bills (kWh)
2Nutrition labels (kcal / food cal)
3HVAC and heating (BTU, therms)
4Physics and chemistry (J, eV)
Energy conversion — common questions
Is a food calorie the same as a calorie?
No — a food 'Calorie' (capital C) actually means 1 kilocalorie = 1,000 small calories = 4,184 J. Nutrition labels typically write 'cal' meaning kcal.
How many joules in 1 kWh?
1 kWh = 3,600,000 J (3.6 MJ). Because 1 kW × 1 hour = 1,000 W × 3,600 s = 3,600,000 J.
What is a BTU?
British Thermal Unit — the energy required to raise 1 pound of water by 1 °F. 1 BTU ≈ 1,055 J.
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