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Convert megajoule to kilowatt hour

Here you can quickly calculate how many kilowatt hour fit in one megajoule.
write a number and we convert instantly
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  • 1 MJ = 0.277778 kWh
  • 1 kWh = 3.6 MJ

Example: megajoule to kilowatt hour

  • 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

Megajoule to kilowatt hour formula

To convert megajoule to kilowatt hour, multiply by 0.277778.

1 MJ = 0.277778 kWh
Example: 1 megajoule = 0.277778 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 megajoule and kilowatt hour conversion quiz

Score: 0

159 kilowatt hour equals 630 megajoule.

Correct answer: 159 kilowatt hour = 572 megajoule.

4.3 kilowatt hour equals 13.2 megajoule.

Correct answer: 4.3 kilowatt hour = 15.5 megajoule.

118 megajoule equals 32.8 kilowatt hour.

Correct answer: 118 megajoule = 32.8 kilowatt hour.

178 megajoule equals 49.4 kilowatt hour.

Correct answer: 178 megajoule = 49.4 kilowatt hour.

97 megajoule equals 31 kilowatt hour.

Correct answer: 97 megajoule = 26.9 kilowatt hour.

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