Kilowatt-Hours to Megajoules Converter

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


Result in Megajoules:

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1 kWh = 3.6 MJ

Do you want to convert megajoules to kilowatt-hours?

How to Convert Kilowatt-Hours to Megajoules

To convert a measurement in kilowatt-hours to a measurement in megajoules, multiply the energy by the following conversion ratio: 3.6 megajoules/kilowatt-hour.

Since one kilowatt-hour is equal to 3.6 megajoules, you can use this simple formula to convert:

megajoules = kilowatt-hours × 3.6

The energy in megajoules is equal to the energy in kilowatt-hours multiplied by 3.6.

For example, here's how to convert 5 kilowatt-hours to megajoules using the formula above.
megajoules = (5 kWh × 3.6) = 18 MJ

How Many Megajoules Are in a Kilowatt-Hour?

There are 3.6 megajoules in a kilowatt-hour, which is why we use this value in the formula above.

1 kWh = 3.6 MJ

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

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.

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.

Kilowatt-Hour to Megajoule Conversion Table

Table showing various kilowatt-hour measurements converted to megajoules.
Kilowatt-hours Megajoules
1 kWh 3.6 MJ
2 kWh 7.2 MJ
3 kWh 10.8 MJ
4 kWh 14.4 MJ
5 kWh 18 MJ
6 kWh 21.6 MJ
7 kWh 25.2 MJ
8 kWh 28.8 MJ
9 kWh 32.4 MJ
10 kWh 36 MJ
11 kWh 39.6 MJ
12 kWh 43.2 MJ
13 kWh 46.8 MJ
14 kWh 50.4 MJ
15 kWh 54 MJ
16 kWh 57.6 MJ
17 kWh 61.2 MJ
18 kWh 64.8 MJ
19 kWh 68.4 MJ
20 kWh 72 MJ
21 kWh 75.6 MJ
22 kWh 79.2 MJ
23 kWh 82.8 MJ
24 kWh 86.4 MJ
25 kWh 90 MJ
26 kWh 93.6 MJ
27 kWh 97.2 MJ
28 kWh 100.8 MJ
29 kWh 104.4 MJ
30 kWh 108 MJ
31 kWh 111.6 MJ
32 kWh 115.2 MJ
33 kWh 118.8 MJ
34 kWh 122.4 MJ
35 kWh 126 MJ
36 kWh 129.6 MJ
37 kWh 133.2 MJ
38 kWh 136.8 MJ
39 kWh 140.4 MJ
40 kWh 144 MJ


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

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