Convert Megajoules to Watt-hours

Enter the energy in megajoules below to get the value converted to watt-hours.

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1 MJ = 277.777778 Wh

How to Convert Megajoules to Watt-hours

To convert a megajoule measurement to a watt-hour measurement, multiply the energy by the conversion ratio. One megajoule is equal to 277.777778 watt-hours, so use this simple formula to convert:

watt-hours = megajoules × 277.777778

The energy in watt-hours is equal to the megajoules multiplied by 277.777778.

For example, here's how to convert 5 megajoules to watt-hours using the formula above.
5 MJ = (5 × 277.777778) = 1,388.888889 Wh

Megajoules and watt-hours are both units used to measure energy. Keep reading to learn more about each unit of measure.

Megajoules

One megajoule is equal to 1,000,000 joules, which are the energy equal to the force on an object of one newton at a distance of one meter.

The megajoule is a multiple of the joule, which is the SI derived unit for energy. In the metric system, "mega" is the prefix for 109. Megajoules can be abbreviated as MJ, for example 1 megajoule can be written as 1 MJ.

Watt-hours

The watt-hour is a measure of electrical energy equal to one watt of power over a one hour period.

Watt-hours can be abbreviated as Wh, for example 1 watt-hour can be written as 1 Wh.

Megajoule Measurements and Equivalent Watt-hour Conversions

Common megajoule values converted to the equivalent watt-hour value
Megajoules Watt-hours
1 MJ 277.78 Wh
2 MJ 555.56 Wh
3 MJ 833.33 Wh
4 MJ 1,111 Wh
5 MJ 1,389 Wh
6 MJ 1,667 Wh
7 MJ 1,944 Wh
8 MJ 2,222 Wh
9 MJ 2,500 Wh
10 MJ 2,778 Wh
11 MJ 3,056 Wh
12 MJ 3,333 Wh
13 MJ 3,611 Wh
14 MJ 3,889 Wh
15 MJ 4,167 Wh
16 MJ 4,444 Wh
17 MJ 4,722 Wh
18 MJ 5,000 Wh
19 MJ 5,278 Wh
20 MJ 5,556 Wh
21 MJ 5,833 Wh
22 MJ 6,111 Wh
23 MJ 6,389 Wh
24 MJ 6,667 Wh
25 MJ 6,944 Wh
26 MJ 7,222 Wh
27 MJ 7,500 Wh
28 MJ 7,778 Wh
29 MJ 8,056 Wh
30 MJ 8,333 Wh
31 MJ 8,611 Wh
32 MJ 8,889 Wh
33 MJ 9,167 Wh
34 MJ 9,444 Wh
35 MJ 9,722 Wh
36 MJ 10,000 Wh
37 MJ 10,278 Wh
38 MJ 10,556 Wh
39 MJ 10,833 Wh
40 MJ 11,111 Wh

More Megajoule Energy Conversions

Joules
Convert to Joules
1 MJ is equal to 1,000,000 joules
Convert to Kilojoules
1 MJ is equal to 1,000 kilojoules
Convert to Gigajoules
1 MJ is equal to 0.001 gigajoules
Calories
Convert to Calories
1 MJ is equal to 239,005.7 calories
Convert to Kilocalories
1 MJ is equal to 239.005736 kilocalories
Convert to Megacalories
1 MJ is equal to 0.239006 megacalories
Watts x Time
Convert to Kilowatt-hours
1 MJ is equal to 0.277778 kilowatt-hours
Convert to Megawatt-hours
1 MJ is equal to 0.000278 megawatt-hours
Convert to Watt-seconds
1 MJ is equal to 1,000,000 watt-seconds
Thermal Units
Convert to British Thermal Units
1 MJ is equal to 947.81712 british thermal units
Convert to Million BTU
1 MJ is equal to 0.000948 million BTU
Convert to Therms
1 MJ is equal to 0.009478 therms
Convert to Quads
1 MJ is equal to 9.4782E-13 quads
Electronvolts
Convert to Electronvolts
1 MJ is equal to 6,241,499,999,999,999,833,276,416 electronvolts
Convert to Kiloelectronvolts
1 MJ is equal to 6,241,499,999,999,999,606,784 kiloelectronvolts
Convert to Megaelectronvolts
1 MJ is equal to 6,241,500,000,000,000,000 megaelectronvolts