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Kilowatt-hours to Megajoules Converter

Convert kilowatt-hours (kWh) to megajoules (MJ), with the formula, a conversion table and exact factors.

Change the values and press Calculate to work out your own figures.

Enter an amount of energy, choose its unit and the unit you want. The answer is exact until it is shown, and the same value appears in every other unit.

A number, fraction (3/8), mixed number (1 1/2), scientific notation (2.5e6) or a simple sum such as 2*3.
The unit you want the answer in. Swap exchanges the two units.
Result
3.6 MJ
joules (watt-seconds)
3,600,000 J
kilojoules
3,600 kJ
gigajoules
0.0036 GJ
calories (thermochemical)
860,420.650096 cal
kilocalories (food Calories)
860.420650096 kcal
megacalories
0.860420650096 Mcal
watt-hours
1,000 Wh
megawatt-hours
0.001 MWh
British thermal units (IT)
3,412.14163313 Btu
million Btu
0.00341214163313 MMBtu
therms (100,000 Btu)
0.0341214163313 thm
quads (10¹⁵ Btu)
3.41214163313 × 10⁻¹² quad
electronvolts
2.24694326681 × 10²⁵ eV
kiloelectronvolts
2.24694326681 × 10²² keV
megaelectronvolts
2.24694326681 × 10¹⁹ MeV

1 kWh = 3.6 MJ

Show the working
  1. 1 kWh = 3.6 MJ
  2. 1 × 3.6 = 3.6 MJ

How to convert kilowatt-hours to megajoules

1 kWh = 3.6 MJ, so multiply by 3.6 to go from kilowatt-hours to megajoules. Going the other way, 1 MJ = 0.277777777778 kWh.

MJ = kWh × 3.6
kWh = MJ × 0.277777777778

Worked example:

1 kWh = 3.6 MJ
5 × 3.6 = 18 MJ

Kilowatt-hours to megajoules table

Kilowatt-hoursMegajoules
1 kWh3.6 MJ
2 kWh7.2 MJ
3 kWh10.8 MJ
4 kWh14.4 MJ
5 kWh18 MJ
6 kWh21.6 MJ
7 kWh25.2 MJ
8 kWh28.8 MJ
9 kWh32.4 MJ
10 kWh36 MJ
15 kWh54 MJ
20 kWh72 MJ
25 kWh90 MJ
30 kWh108 MJ
40 kWh144 MJ
50 kWh180 MJ
75 kWh270 MJ
100 kWh360 MJ
250 kWh900 MJ
500 kWh1,800 MJ
1000 kWh3,600 MJ

About the units

Kilowatt-hours (kWh)
Kilowatt-hours, a metric unit. Definition: BIPM SI Brochure, 9th edition (SI units, prefixes and units accepted for use with the SI).

Formula version 0.1.0Reviewed