Convert kilojoule to kilowatt hour
Here you can quickly calculate how many kilowatt hour fit in one kilojoule.
Only numbers, with a single decimal separator.
Choose unit - To
write a number and we convert instantly
- scroll: formula · table · questions -
- 1 kJ = 0.000278 kWh
- 1 kWh = 3600 kJ
Example: kilojoule to kilowatt hour
- 1 kilojoule = 0.000278 kilowatt hour
Kilojoule to kilowatt hour conversion table
| kilojoule | kilowatt hour |
|---|---|
| 1 | 0.000278 |
| 2 | 0.000556 |
| 5 | 0.001389 |
| 10 | 0.002778 |
| 20 | 0.005556 |
| 50 | 0.013889 |
| 100 | 0.027778 |
Kilojoule to kilowatt hour formula
To convert kilojoule to kilowatt hour, divide by 3600.
1 kJ = 0.000278 kWh
Example: 1 kilojoule = 0.000278 kilowatt hour
Common energy conversion mistakes
-
Kilowatts (kW) and kilowatt-hours (kWh) are constantly confused: kW is power, how fast energy is being used right now, while kWh is an amount of energy, power times time. A 2 kW heater running for 3 hours uses 2 × 3 = 6 kWh. Your electricity bill counts kWh; your main fuse limits kW.
-
The relationship is exact: 1 kWh = 3.6 MJ (3,600 kJ, because an hour has 3,600 seconds). The common slip is dividing when you should multiply: 10 kWh is 36 MJ, not 2.8. Remember the direction: kWh → MJ means times 3.6.
Quick kilojoule and kilowatt hour conversion quiz
Score:
0
10 kilowatt hour equals 7.2e+3 kilojoule.
Correct answer: 10 kilowatt hour = 3.6e+4 kilojoule.
2 kilojoule equals 0.000556 kilowatt hour.
Correct answer: 2 kilojoule = 0.000556 kilowatt hour.
20 kilojoule equals 0.00556 kilowatt hour.
Correct answer: 20 kilojoule = 0.00556 kilowatt hour.
50 kilowatt hour equals 1.8e+4 kilojoule.
Correct answer: 50 kilowatt hour = 1.8e+5 kilojoule.