Convert Joule to Kilowatt Hour
Use this free converter to change joules (J) into kilowatt hours (kWh). Joule and kilowatt hour both measure energy. As a quick reference, 1 J equals 2.7778e-7 kWh, and 1 kWh equals 3600000 J.
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Kilowatt Hour (kWh)
2.7778e-7
1 J = 2.7778e-7 kWh
Energy conversion table
| Joule | Kilowatt Hour |
|---|---|
| 0.01 | 2.7778e-9 |
| 0.1 | 2.7778e-8 |
| 0.5 | 1.3889e-7 |
| 1 | 2.7778e-7 |
| 2 | 5.5556e-7 |
| 3 | 8.3333e-7 |
| 5 | 0.0000013888889 |
| 10 | 0.0000027777778 |
| 20 | 0.0000055555556 |
| 25 | 0.0000069444444 |
| 50 | 0.000013888889 |
| 100 | 0.000027777778 |
| 1,000 | 0.00027777778 |
How to convert Joule to Kilowatt Hour
Multiply the joule value by 2.7778e-7 to get kilowatt hours.
- Enter the number of joules you want to convert.
- The converter instantly shows the equivalent value in kilowatt hours.
- Worked example: 15 J × 2.7778e-7 = 0.0000041666667 kWh.
- Use the swap button to reverse the conversion (kilowatt hour to joule).
About these units
Joule (J)
- Definition
- The joule (J) is the SI unit of energy, the work done by a force of one newton over one meter.
- History
- Named after physicist James Prescott Joule, who studied the link between heat and work.
- Current use
- Joules measure energy, work, and heat throughout science and engineering.
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.
Frequently asked questions
How many kilowatt hours are in a joule?
There are 2.7778e-7 kWh in 1 J. To convert, multiply the number of joules by 2.7778e-7.
How do I convert joules to kilowatt hours?
Multiply the joule value by 2.7778e-7 to get kilowatt hours. For example, 10 J = 0.0000027777778 kWh.
Is this joule-to-kilowatt hour 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 Joule to other energy units
| Unit | 1 Joule equals |
|---|---|
| Kilojoule (kJ) | 0.001 kJ |
| Calorie (cal) | 0.23900574 cal |
| Kilocalorie (kcal) | 0.00023900574 kcal |
| Watt Hour (Wh) | 0.00027777778 Wh |
| Kilowatt Hour (kWh) | 2.7778e-7 kWh |
| Electronvolt (eV) | 6.2415e+18 eV |
| British Thermal Unit (BTU) | 0.00094781712 BTU |
| Foot-Pound (ft·lb) | 0.73756215 ft·lb |