Convert Kilowatt Hour to Kilojoule
Use this free converter to change kilowatt hours (kWh) into kilojoules (kJ). Kilowatt hour and kilojoule both measure energy. As a quick reference, 1 kWh equals 3600 kJ, and 1 kJ equals 0.00027777778 kWh.
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Kilojoule (kJ)
3600
1 kWh = 3600 kJ
Energy conversion table
| Kilowatt Hour | Kilojoule |
|---|---|
| 0.01 | 36 |
| 0.1 | 360 |
| 0.5 | 1800 |
| 1 | 3600 |
| 2 | 7200 |
| 3 | 10800 |
| 5 | 18000 |
| 10 | 36000 |
| 20 | 72000 |
| 25 | 90000 |
| 50 | 180000 |
| 100 | 360000 |
| 1,000 | 3600000 |
How to convert Kilowatt Hour to Kilojoule
Multiply the kilowatt hour value by 3600 to get kilojoules.
- Enter the number of kilowatt hours you want to convert.
- The converter instantly shows the equivalent value in kilojoules.
- Worked example: 15 kWh × 3600 = 54000 kJ.
- Use the swap button to reverse the conversion (kilojoule to kilowatt hour).
About these units
Kilowatt Hour (kWh)
- Definition
- A kilowatt-hour (kWh) is 1,000 watt-hours, the standard unit on electricity bills.
- History
- It became the billing unit as household electricity spread.
- Current use
- Kilowatt-hours measure home electricity use and EV battery capacity.
Kilojoule (kJ)
- Definition
- A kilojoule (kJ) is 1,000 joules, a practical size for food energy and mechanical work.
- History
- It is a metric multiple of the joule.
- Current use
- Kilojoules express food energy on nutrition labels in many countries.
Frequently asked questions
How many kilojoules are in a kilowatt hour?
There are 3600 kJ in 1 kWh. To convert, multiply the number of kilowatt hours by 3600.
How do I convert kilowatt hours to kilojoules?
Multiply the kilowatt hour value by 3600 to get kilojoules. For example, 10 kWh = 36000 kJ.
Is this kilowatt hour-to-kilojoule converter free?
Yes. This converter is completely free, runs entirely in your browser, and requires no sign-up. Your inputs never leave your device.
Convert Kilowatt Hour to other energy units
| Unit | 1 Kilowatt Hour equals |
|---|---|
| Joule (J) | 3600000 J |
| Kilojoule (kJ) | 3600 kJ |
| Calorie (cal) | 860420.65 cal |
| Kilocalorie (kcal) | 860.42065 kcal |
| Watt Hour (Wh) | 1000 Wh |
| Electronvolt (eV) | 2.2469e+25 eV |
| British Thermal Unit (BTU) | 3412.1416 BTU |
| Foot-Pound (ft·lb) | 2655223.7 ft·lb |