Convert kilojoule to kilowatt hour
Here you can quickly calculate how many kilowatt hour fit in one kilojoule.
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- 1 kJ = 0.000278 kWh
- 1 kWh = 3600 kJ
Conversion from kilojoule to kilowatt hour example
- 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 |
Formula to convert kilojoule to kilowatt hour
To convert kilojoule to kilowatt hour, divide by 3600.
1 kJ = 0.000278 kWh
Example: 1 kilojoule = 0.000278 kilowatt hour
Common mistakes
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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.
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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 to/from kilowatt hour conversion quiz
Score:
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2 kilojoule equals 0.000556 kilowatt hour.
Correct answer: 2 kilojoule = 0.000556 kilowatt hour.
5 kilojoule equals 0.0139 kilowatt hour.
Correct answer: 5 kilojoule = 0.00139 kilowatt hour.
25 kilowatt hour equals 9.0e+5 kilojoule.
Correct answer: 25 kilowatt hour = 9.0e+4 kilojoule.
50 kilowatt hour equals 1.8e+5 kilojoule.
Correct answer: 50 kilowatt hour = 1.8e+5 kilojoule.
2 kilowatt hour equals 3.6e+4 kilojoule.
Correct answer: 2 kilowatt hour = 7.2e+3 kilojoule.