Skip to content
RK Calculator
Menu

Megajoules to Megawatt-hours Converter

Convert megajoules (MJ) to megawatt-hours (MWh), 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
0.000277777777778 MWh
joules (watt-seconds)
1,000,000 J
kilojoules
1,000 kJ
gigajoules
0.001 GJ
calories (thermochemical)
239,005.736138 cal
kilocalories (food Calories)
239.005736138 kcal
megacalories
0.239005736138 Mcal
watt-hours
277.777777778 Wh
kilowatt-hours
0.277777777778 kWh
British thermal units (IT)
947.817120313 Btu
million Btu
0.000947817120313 MMBtu
therms (100,000 Btu)
0.00947817120313 thm
quads (10¹⁵ Btu)
9.47817120313 × 10⁻¹³ quad
electronvolts
6.24150907446 × 10²⁴ eV
kiloelectronvolts
6.24150907446 × 10²¹ keV
megaelectronvolts
6.24150907446 × 10¹⁸ MeV

1 MJ = 0.000277777777778 MWh

Show the working
  1. 1 MJ = 0.000277777777778 MWh
  2. 1 × 0.000277777777778 = 0.000277777777778 MWh

How to convert megajoules to megawatt-hours

1 MWh = 3,600 MJ, so divide by 3,600 to go from megajoules to megawatt-hours (1 MJ = 0.000277777777778 MWh).

MWh = MJ ÷ 3,600
MJ = MWh × 3,600

Worked example:

1 MJ = 0.000277777777778 MWh
5 × 0.000277777777778 = 0.00138888888889 MWh

Megajoules to megawatt-hours table

MegajoulesMegawatt-hours
1 MJ0.000277777777778 MWh
2 MJ0.000555555555556 MWh
3 MJ0.000833333333333 MWh
4 MJ0.00111111111111 MWh
5 MJ0.00138888888889 MWh
6 MJ0.00166666666667 MWh
7 MJ0.00194444444444 MWh
8 MJ0.00222222222222 MWh
9 MJ0.0025 MWh
10 MJ0.00277777777778 MWh
15 MJ0.00416666666667 MWh
20 MJ0.00555555555556 MWh
25 MJ0.00694444444444 MWh
30 MJ0.00833333333333 MWh
40 MJ0.0111111111111 MWh
50 MJ0.0138888888889 MWh
75 MJ0.0208333333333 MWh
100 MJ0.0277777777778 MWh
250 MJ0.0694444444444 MWh
500 MJ0.138888888889 MWh
1000 MJ0.277777777778 MWh

About the units

Megawatt-hours (MWh)
Megawatt-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