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Megawatt-hours to Joules Converter

Convert megawatt-hours (MWh) to joules (watt-seconds) (J), 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
3,600,000,000 J
kilojoules
3,600,000 kJ
megajoules
3,600 MJ
gigajoules
3.6 GJ
calories (thermochemical)
860,420,650.096 cal
kilocalories (food Calories)
860,420.650096 kcal
megacalories
860.420650096 Mcal
watt-hours
1,000,000 Wh
kilowatt-hours
1,000 kWh
British thermal units (IT)
3,412,141.63313 Btu
million Btu
3.41214163313 MMBtu
therms (100,000 Btu)
34.1214163313 thm
quads (10¹⁵ Btu)
3.41214163313 × 10⁻⁹ quad
electronvolts
2.24694326681 × 10²⁸ eV
kiloelectronvolts
2.24694326681 × 10²⁵ keV
megaelectronvolts
2.24694326681 × 10²² MeV

1 MWh = 3,600,000,000 J

Show the working
  1. 1 MWh = 3600000000 J
  2. 1 × 3600000000 = 3600000000 J

How to convert megawatt-hours to joules

1 MWh = 3,600,000,000 J, so multiply by 3,600,000,000 to go from megawatt-hours to joules (watt-seconds). Going the other way, 1 J = 2.77777777778 × 10⁻¹⁰ MWh.

J = MWh × 3,600,000,000
MWh = J × 2.77777777778

Worked example:

1 MWh = 3600000000 J
5 × 3600000000 = 18000000000 J

Megawatt-hours to joules table

Megawatt-hoursJoules
1 MWh3,600,000,000 J
2 MWh7,200,000,000 J
3 MWh10,800,000,000 J
4 MWh14,400,000,000 J
5 MWh18,000,000,000 J
6 MWh21,600,000,000 J
7 MWh25,200,000,000 J
8 MWh28,800,000,000 J
9 MWh32,400,000,000 J
10 MWh36,000,000,000 J
15 MWh54,000,000,000 J
20 MWh72,000,000,000 J
25 MWh90,000,000,000 J
30 MWh108,000,000,000 J
40 MWh144,000,000,000 J
50 MWh180,000,000,000 J
75 MWh270,000,000,000 J
100 MWh360,000,000,000 J
250 MWh900,000,000,000 J
500 MWh1,800,000,000,000 J
1000 MWh3,600,000,000,000 J

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).
Joules (J)
Joules (watt-seconds), 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