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Convert megajoules to kilowatt-hours

Convert megajoules (MJ) to kilowatt-hours (kWh). 1 MJ = 0.277778 kWh, and 1 kWh = 3.6 MJ.

1 MJ = 0.277778 kWh

MJ to kWh formula

kWh = MJ ÷ 3.6

Divide the number of megajoules by 3.6.

Example: To convert 1 MJ to kilowatt-hours: 1 ÷ 3.6 = 0.277778 kWh.

Quick answers

What is 1 MJ in kilowatt-hours?
1 MJ = 0.277778 kWh
What is 100 MJ in kilowatt-hours?
100 MJ = 27.7778 kWh

MJ to kWh conversion table

kWh to MJ table
megajoules (MJ)kilowatt-hours (kWh)
1 MJ0.277778 kWh
3.6 MJ1 kWh
10 MJ2.77778 kWh
50 MJ13.8889 kWh
100 MJ27.7778 kWh
1,000 MJ277.778 kWh

Frequently asked questions

How many megajoules are in a kilowatt-hour?

There are 3.6 megajoules in a kilowatt-hour (1 kWh = 3.6 MJ), so 1 MJ = 0.277778 kWh.

How do I convert megajoules to kilowatt-hours?

Divide the number of megajoules by 3.6. To convert 1 MJ to kilowatt-hours: 1 ÷ 3.6 = 0.277778 kWh.

Is the MJ to kWh conversion exact?

Yes. Both units are defined exactly, so 1 megajoule is exactly 0.277777777778 kilowatt-hours. Results on this page are rounded to six significant digits; pick more decimals in the converter if you need them.

What is 1 MJ in kilowatt-hours?

1 MJ = 0.277778 kWh.

How do I convert kilowatt-hours back to megajoules?

Use the reverse relationship: 1 kWh = 3.6 MJ. The kWh to MJ page has a converter and a full table.

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