Kilowatt-hours to Joules Converter

Convert kilowatt-hours to joules (kWh to J) instantly. 1 kilowatt-hour = 3,600,000 J. Includes the formula and a conversion table.

J = kWh × 3,600,000

How to convert kilowatt-hours to joules

J = kWh × 3,600,000

One kilowatt-hour equals 3,600,000 J, so multiply the value in kilowatt-hours by 3,600,000. Example: 10 kWh = 36,000,000 J.

The calorie here is the thermochemical calorie (exactly 4.184 J); a food "Calorie" is one kilocalorie. One kilowatt-hour is exactly 3.6 MJ. The BTU is the International Table BTU (1,055.05585262 J).

Kilowatt-hours to joules conversion table

Kilowatt-hours (kWh)Joules (J)
1 kWh3,600,000 J
2 kWh7,200,000 J
3 kWh10,800,000 J
5 kWh18,000,000 J
10 kWh36,000,000 J
15 kWh54,000,000 J
20 kWh72,000,000 J
25 kWh90,000,000 J
50 kWh180,000,000 J
75 kWh270,000,000 J
100 kWh360,000,000 J
250 kWh900,000,000 J
500 kWh1,800,000,000 J
1,000 kWh3,600,000,000 J

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Frequently asked questions

How many joules are in 1 kilowatt-hour?

1 kilowatt-hour is equal to 3,600,000 J.

How do I convert kilowatt-hours to joules?

Multiply the number of kilowatt-hours by 3,600,000. For example, 10 kWh × 3,600,000 = 36,000,000 J.

How do I convert joules back to kilowatt-hours?

Use the formula kWh = J × 0.0000002778, or open the joules to kilowatt-hours converter.

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