Convert megajoule to kilowatt hour
Here you can quickly calculate how many kilowatt hour fit in one megajoule.
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- 1 MJ = 0.277778 kWh
- 1 kWh = 3.6 MJ
Conversion from megajoule to kilowatt hour example
- 1 megajoule = 0.277778 kilowatt hour
Megajoule to kilowatt hour conversion table
| megajoule | kilowatt hour |
|---|---|
| 1 | 0.277778 |
| 2 | 0.555556 |
| 5 | 1.388889 |
| 10 | 2.777778 |
| 20 | 5.555556 |
| 50 | 13.888889 |
| 100 | 27.777778 |
Formula to convert megajoule to kilowatt hour
To convert megajoule to kilowatt hour, multiply by 0.277778.
1 MJ = 0.277778 kWh
Example: 1 megajoule = 0.277778 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 megajoule to/from kilowatt hour conversion quiz
Score:
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229 kilowatt hour equals 824 megajoule.
Correct answer: 229 kilowatt hour = 824 megajoule.
2.5 kilowatt hour equals 9.9 megajoule.
Correct answer: 2.5 kilowatt hour = 9 megajoule.
243 kilowatt hour equals 875 megajoule.
Correct answer: 243 kilowatt hour = 875 megajoule.
20.4 kilowatt hour equals 66.1 megajoule.
Correct answer: 20.4 kilowatt hour = 73.4 megajoule.
20.7 kilowatt hour equals 82 megajoule.
Correct answer: 20.7 kilowatt hour = 74.5 megajoule.