W⋅hr → MJ converter

Convert watt-hour to megajoule (Energy)

1 W⋅hr = 0.0036 MJ · 1 MJ = 277.7777778 W⋅hr

Common values: 10 W⋅hr 50 W⋅hr 100 W⋅hr 500 W⋅hr 1000 W⋅hr

500 W⋅hr = 1.8 MJ

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Watt-hour to megajoule Conversion

1 watt-hour (W⋅hr) is equal to 0.0036 megajoule (MJ).

1 W⋅hr = 0.0036 MJ

or

1 MJ = 277.7777778 W⋅hr

Formula

To convert a energy from watt-hour (W⋅hr) to megajoule (MJ), divide the energy in watt-hour by 277.7777778

e(MJ) = e(W⋅hr) / 277.7777778

Examples:

Convert 500 watt-hour to megajoule:

e(MJ) = 500W⋅hr / 277.7777778 = 1.8 MJ

Conversion table

Watt-hour (W⋅hr) Megajoule (MJ)
1 W⋅hr 0.0036 MJ
2 W⋅hr 0.0072 MJ
3 W⋅hr 0.0108 MJ
5 W⋅hr 0.018 MJ
10 W⋅hr 0.036 MJ
20 W⋅hr 0.072 MJ
25 W⋅hr 0.09 MJ
50 W⋅hr 0.18 MJ
100 W⋅hr 0.36 MJ
250 W⋅hr 0.9 MJ
500 W⋅hr 1.8 MJ
1000 W⋅hr 3.6 MJ
Megajoule (MJ) Watt-hour (W⋅hr)
1 MJ 277.777777778 W⋅hr
2 MJ 555.555555556 W⋅hr
3 MJ 833.333333333 W⋅hr
5 MJ 1388.888888889 W⋅hr
10 MJ 2777.777777778 W⋅hr
20 MJ 5555.555555556 W⋅hr
25 MJ 6944.444444444 W⋅hr
50 MJ 13888.888888889 W⋅hr
100 MJ 27777.777777778 W⋅hr
250 MJ 69444.444444444 W⋅hr
500 MJ 138888.888888889 W⋅hr
1000 MJ 277777.777777778 W⋅hr

Frequently asked questions

How do I convert watt-hour to megajoule?

Divide the value in watt-hour by 277.7777778 to get the result in megajoule. For example, 5 W⋅hr ÷ 277.7777778 = 0.018 MJ.

How many megajoule are in 1 watt-hour?

1 watt-hour (W⋅hr) is equal to 0.0036 megajoule (MJ).

How do I convert megajoule back to watt-hour?

Use the inverse operation: multiply the value in megajoule by 277.7777778 to get the result in watt-hour.

How accurate is the watt-hour to megajoule conversion?

The converter multiplies by the conversion factor 277.7777778 and rounds the result to 9 decimal places by default. You can increase or reduce the precision with the digits option on this page.

Sources

Conversion factors are based on internationally recognised standards:

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