Kilowatt-hours to Joules – kilowatt-hour to joule Converter

1 kWh = 3600000 J

kilowatt-hours (kWh)

joules (J)3600000

Formula

J = kWh × 3600000

Kilowatt-hours to joules conversion table

kilowatt-hours (kWh)	joules (J)
0.25 kWh	900000 J
0.5 kWh	1800000 J
1 kWh	3600000 J
2 kWh	7200000 J
5 kWh	18000000 J
10 kWh	36000000 J
20 kWh	72000000 J
50 kWh	180000000 J
100 kWh	360000000 J
200 kWh	720000000 J
500 kWh	1800000000 J
1000 kWh	3600000000 J
2500 kWh	9000000000 J
5000 kWh	18000000000 J
10000 kWh	36000000000 J

Kilowatt-hours and joules are both energy units. One kilowatt-hour equals 3600000 joules; enter any value above for an instant result, or use the table for common conversions.

Sanity-check examples

1 kWh = 3600000 J
10 kWh = 36000000 J
2.5 kWh = 9000000 J

Common pitfalls and look-alike units

The "Calorie" on food labels and in fitness is the kilocalorie (kcal): 1 kcal = 4184 J, and the small calorie (cal) is one thousandth of it. This page uses the thermochemical calorie (1 cal = 4.184 J); the International Steam Table calorie is about 4.1868 J, so values differ slightly. The "degree" (度) on a Chinese electricity bill is one kilowatt-hour, and 1 kWh = 3600 kJ.

Frequently asked questions

How many joules are in a kilowatt-hour?

1 kilowatt-hour (kWh) equals 3600000 joule (J).

How do I convert kilowatt-hours to joules?

Multiply the kilowatt-hour value by 3600000 to get joule — for example, 2 kilowatt-hours = 7200000 joule.

How do I convert joules back to kilowatt-hours?

1 joule is approximately 2.77778e-7 kilowatt-hour. Use the swap button or the reverse conversion page linked on this page.

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