Kilowatt-hours to Megajoules Converter

1 kilowatt-hour (kWh) equals 3.6 megajoules (MJ).

Quick answer

  • 1 kilowatt-hour = 3.6 megajoules
  • 1 megajoule = 0.2777777778 kilowatt-hours
  • Formula: MJ = kWh × 3.6

1 kilowatt-hour = 3.6 megajoules

How to convert kilowatt-hours to megajoules

MJ = kWh × 3.6

To convert kilowatt-hours to megajoules, multiply the number of kilowatt-hours by 3.6.

Example: 18 kWh to MJ

  1. Start with the value in kilowatt-hours: 18 kWh.
  2. Multiply by 3.6: 18 × 3.6 = 64.8.
  3. Result: 18 kilowatt-hours = 64.8 megajoules.

Going the other way, 1 megajoule = 0.277777777778 kilowatt-hours, so to convert megajoules back to kilowatt-hours you divide by the same number. See megajoules to kilowatt-hours.

Kilowatt-hours to megajoules conversion table

Kilowatt-hours (kWh)Megajoules (MJ)
0.25 kWh 0.9 MJ
0.5 kWh 1.8 MJ
0.75 kWh 2.7 MJ
1 kWh 3.6 MJ
1.5 kWh 5.4 MJ
2 kWh 7.2 MJ
2.5 kWh 9 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

More kWh to MJ values

What is a kilowatt-hour?

The kilowatt-hour is the unit of electrical energy on electricity bills worldwide: the energy used by a 1,000-watt appliance running for one hour, exactly 3.6 megajoules.

More about kilowatt-hours →

What is a megajoule?

The megajoule is a million joules. Fuel energy content is often given in MJ per kilogram or liter: gasoline contains about 34 MJ per liter.

More about megajoules →

Convert kilowatt-hours to other units

Convert other units to megajoules

Frequently asked questions

How many megajoules are in a kilowatt-hour?

One kilowatt-hour is 3.6 megajoules.

How many kilowatt-hours are in a megajoule?

One megajoule is 0.2777777778 kilowatt-hours.

What is the formula to convert kilowatt-hours to megajoules?

MJ = kWh × 3.6.