Kilowatt-hours to Megajoules Converter

Convert kilowatt-hours (kWh) to megajoules (MJ) instantly. Energy conversions link food labels in kJ and kcal, SP Group bills in kWh and air-conditioner capacity in BTU.

Result

Megajoules
3.6 MJ

How to use the kilowatt-hours to megajoules converter

  1. Enter the kilowatt-hours (kWh).
  2. The results update as you type, or press Calculate.
  3. Read the megajoules first, then the supporting figures below it.

Formula

Megajoules = kilowatt-hours × 3.6

Worked example

For example, with these inputs:

the calculator returns:

Kilowatt-hours to Megajoules table

Kilowatt-hoursMegajoules
1 kWh3.6 MJ
2 kWh7.2 MJ
5 kWh18 MJ
10 kWh36 MJ
20 kWh72 MJ
25 kWh90 MJ
50 kWh180 MJ
100 kWh360 MJ
250 kWh900 MJ
500 kWh1,800 MJ
1,000 kWh3,600 MJ

About this conversion

Energy conversions link food labels in kJ and kcal, SP Group bills in kWh and air-conditioner capacity in BTU.

Writing the units next to every number while you work is the simplest way to avoid mistakes. If the units do not cancel to leave the one you want, the calculation is set up wrongly.

Many conversion factors are exact by definition. The inch has been defined as exactly 2.54 centimetres since 1959, and the pound as exactly 0.45359237 kilograms, so conversions involving them can be as precise as you need.

Frequently asked questions

How many megajoules are in one kilowatt-hour?

1 kWh = 3.6 MJ.

How do I convert kWh to MJ?

Megajoules = kilowatt-hours × 3.6.

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