Megajoules to Kilowatt-Hours Converter

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


Result in Kilowatt-Hours:

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1 MJ = 0.277778 kWh

Do you want to convert kilowatt-hours to megajoules?

How to Convert Megajoules to Kilowatt-Hours

To convert a measurement in megajoules to a measurement in kilowatt-hours, multiply the energy by the following conversion ratio: 0.277778 kilowatt-hours/megajoule.

Since one megajoule is equal to 0.277778 kilowatt-hours, you can use this simple formula to convert:

kilowatt-hours = megajoules × 0.277778

The energy in kilowatt-hours is equal to the energy in megajoules multiplied by 0.277778.

For example, here's how to convert 5 megajoules to kilowatt-hours using the formula above.
kilowatt-hours = (5 MJ × 0.277778) = 1.388889 kWh

How Many Kilowatt-Hours Are in a Megajoule?

There are 0.277778 kilowatt-hours in a megajoule, which is why we use this value in the formula above.

1 MJ = 0.277778 kWh

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

What Is a Megajoule?

One megajoule is equal to 1,000,000 joules, which is 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 millions, or 106. Megajoules can be abbreviated as MJ; for example, 1 megajoule can be written as 1 MJ.

Learn more about megajoules.

What Is a Kilowatt-Hour?

A kilowatt-hour is a measure of electrical energy equal to one kilowatt, or 1,000 watts, of power over a one hour period. Kilowatt-hours are a measure of electrical work performed over a period of time, and are often used as a way of measuring energy usage by electric companies.

Kilowatt-hours are usually abbreviated as kWh, although the formally adopted expression is kW·h. The abbreviation kW h is also sometimes used. For example, 1 kilowatt-hour can be written as 1 kWh, 1 kW·h, or 1 kW h.

In formal expressions, the centered dot (·) or space is used to separate units used to indicate multiplication in an expression and to avoid conflicting prefixes being misinterpreted as a unit symbol.[1]

Learn more about kilowatt-hours.

Megajoule to Kilowatt-Hour Conversion Table

Table showing various megajoule measurements converted to kilowatt-hours.
Megajoules Kilowatt-hours
1 MJ 0.277778 kWh
2 MJ 0.555556 kWh
3 MJ 0.833333 kWh
4 MJ 1.1111 kWh
5 MJ 1.3889 kWh
6 MJ 1.6667 kWh
7 MJ 1.9444 kWh
8 MJ 2.2222 kWh
9 MJ 2.5 kWh
10 MJ 2.7778 kWh
11 MJ 3.0556 kWh
12 MJ 3.3333 kWh
13 MJ 3.6111 kWh
14 MJ 3.8889 kWh
15 MJ 4.1667 kWh
16 MJ 4.4444 kWh
17 MJ 4.7222 kWh
18 MJ 5 kWh
19 MJ 5.2778 kWh
20 MJ 5.5556 kWh
21 MJ 5.8333 kWh
22 MJ 6.1111 kWh
23 MJ 6.3889 kWh
24 MJ 6.6667 kWh
25 MJ 6.9444 kWh
26 MJ 7.2222 kWh
27 MJ 7.5 kWh
28 MJ 7.7778 kWh
29 MJ 8.0556 kWh
30 MJ 8.3333 kWh
31 MJ 8.6111 kWh
32 MJ 8.8889 kWh
33 MJ 9.1667 kWh
34 MJ 9.4444 kWh
35 MJ 9.7222 kWh
36 MJ 10 kWh
37 MJ 10.28 kWh
38 MJ 10.56 kWh
39 MJ 10.83 kWh
40 MJ 11.11 kWh


  1. Bureau International des Poids et Mesures, The International System of Units (SI), 9th edition, 2019,

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