How to convert kilojoules to kilowatt-hours
To convert kilojoules (kJ) to kilowatt-hours (kWh), divide the value in kilojoules by 3,600.
kWh = kJ ÷ 3,600
Example: 5 kJ = 0.001388888889 kWh.
You can also type 5 kJ to kWh into the smart calculator, or mix units: 1 kJ + 1 kWh.
Kilojoules to Kilowatt-Hours conversion table
| Kilojoules | Kilowatt-Hours |
|---|---|
| 0.01 kJ | 0.0000027777778 kWh |
| 0.1 kJ | 0.000027777778 kWh |
| 0.25 kJ | 0.000069444444 kWh |
| 0.5 kJ | 0.00013888889 kWh |
| 1 kJ | 0.00027777778 kWh |
| 2 kJ | 0.00055555556 kWh |
| 3 kJ | 0.00083333333 kWh |
| 4 kJ | 0.0011111111 kWh |
| 5 kJ | 0.0013888889 kWh |
| 6 kJ | 0.0016666667 kWh |
| 7 kJ | 0.0019444444 kWh |
| 8 kJ | 0.0022222222 kWh |
| 9 kJ | 0.0025 kWh |
| 10 kJ | 0.0027777778 kWh |
| 12 kJ | 0.0033333333 kWh |
| 15 kJ | 0.0041666667 kWh |
| 20 kJ | 0.0055555556 kWh |
| 25 kJ | 0.0069444444 kWh |
| 30 kJ | 0.0083333333 kWh |
| 40 kJ | 0.011111111 kWh |
| 50 kJ | 0.013888889 kWh |
| 60 kJ | 0.016666667 kWh |
| 75 kJ | 0.020833333 kWh |
| 100 kJ | 0.027777778 kWh |
| 250 kJ | 0.069444444 kWh |
| 500 kJ | 0.13888889 kWh |
| 1,000 kJ | 0.27777778 kWh |
Converting kilowatt-hours back to kilojoules
1 kWh = 3,600 kJ. See the Kilowatt-Hours to Kilojoules converter, or press the swap button above.
About the units
Kilojoule (kJ)
One thousand joules. Food labels in Australia and Europe show kJ alongside kcal.
Kilowatt-hour (kWh)
Exactly 3.6 megajoules: the "unit" on an electricity bill.
Energy is the capacity to do work. The SI unit is the joule. Food energy is labelled in kilocalories (Calories with a capital C) or kilojoules, electricity is billed in kilowatt-hours, and heating often uses BTU or therms.
Questions and answers
How many kilowatt-hours are in a kilojoule?
One kilojoule (kJ) equals 0.0002777777778 kilowatt-hours (kWh).
How do I convert kilojoules to kilowatt-hours?
To convert kilojoules to kilowatt-hours, divide the value in kilojoules by 3,600. The formula is kWh = kJ ÷ 3,600. For example, 5 kJ = 0.0013888889 kWh.
What is 5 kJ in kWh?
5 kilojoules is 0.001388888889 kilowatt-hours.
Which is bigger, a kilojoule or a kilowatt-hour?
A kilowatt-hour is bigger: 1 kWh = 3,600 kJ.
Are Calories on food labels the same as calories?
No. The food Calorie (capital C) is a kilocalorie: 1,000 small calories, or 4.184 kilojoules.
Does this kJ to kWh converter work offline?
Yes. ConvertEasy is a progressive web app: after your first visit it keeps working with no connection, and you can install it to your home screen from the browser menu.