Kilowatt-hours to Kilojoules – kilowatt-hour to kilojoule Converter

1 kWh = 3600 kJ

kilowatt-hours (kWh)

kilojoules (kJ)3600

Formula

kJ = kWh × 3600

Kilowatt-hours to kilojoules conversion table

kilowatt-hours (kWh)	kilojoules (kJ)
0.25 kWh	900 kJ
0.5 kWh	1800 kJ
1 kWh	3600 kJ
2 kWh	7200 kJ
5 kWh	18000 kJ
10 kWh	36000 kJ
20 kWh	72000 kJ
50 kWh	180000 kJ
100 kWh	360000 kJ
200 kWh	720000 kJ
500 kWh	1800000 kJ
1000 kWh	3600000 kJ
2500 kWh	9000000 kJ
5000 kWh	18000000 kJ
10000 kWh	36000000 kJ

Kilowatt-hours and kilojoules are both energy units. One kilowatt-hour equals 3600 kilojoules; enter any value above for an instant result, or use the table for common conversions.

Sanity-check examples

1 kWh = 3600 kJ
10 kWh = 36000 kJ
2.5 kWh = 9000 kJ

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 kilojoules are in a kilowatt-hour?

1 kilowatt-hour (kWh) equals 3600 kilojoule (kJ).

How do I convert kilowatt-hours to kilojoules?

Multiply the kilowatt-hour value by 3600 to get kilojoule — for example, 2 kilowatt-hours = 7200 kilojoule.

How do I convert kilojoules back to kilowatt-hours?

1 kilojoule is approximately 0.000277778 kilowatt-hour. Use the swap button or the reverse conversion page linked on this page.

Related conversions

Need more units? Try the full Unit Converter →