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Kilowatt-hours to Kilojoules

Convert kilowatt-hours (kWh) to kilojoules (kJ). Type in either box; the other updates as you go.

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1 kWh = 3,600 kJ

1 kilowatt-hour equals3,600 kJ
1 kilojoule equals0.0002777777778 kWh
FormulakJ = kWh × 3,600

How to convert kilowatt-hours to kilojoules

To convert kilowatt-hours to kilojoules, multiply the number of kilowatt-hours by 3,600.

kJ = kWh × 3,600

Example

Convert 5 kilowatt-hours to kilojoules:

5 kWh × 3,600 = 18,000 kJ

Kilowatt-hour to kilojoule conversion chart

Kilowatt-hours (kWh)Kilojoules (kJ)
1 kWh3,600 kJ
2 kWh7,200 kJ
3 kWh10,800 kJ
4 kWh14,400 kJ
5 kWh18,000 kJ
6 kWh21,600 kJ
7 kWh25,200 kJ
8 kWh28,800 kJ
9 kWh32,400 kJ
10 kWh36,000 kJ
12 kWh43,200 kJ
15 kWh54,000 kJ
20 kWh72,000 kJ
25 kWh90,000 kJ
30 kWh108,000 kJ
40 kWh144,000 kJ
50 kWh180,000 kJ
60 kWh216,000 kJ
70 kWh252,000 kJ
75 kWh270,000 kJ
80 kWh288,000 kJ
90 kWh324,000 kJ
100 kWh360,000 kJ
150 kWh540,000 kJ
200 kWh720,000 kJ
250 kWh900,000 kJ
500 kWh1,800,000 kJ
1,000 kWh3,600,000 kJ

Going the other way? See the kilojoules to kilowatt-hours chart.

About the units

Kilowatt-hour (kWh)

A kilowatt-hour is 1,000 watt-hours, or 3.6 million joules. Electricity bills charge by the kWh.

Kilojoule (kJ)

A kilojoule is 1,000 joules. Food labels in Australia and Europe give energy in kJ next to kcal.

Frequently asked questions

How many kilojoules are in a kilowatt-hour?

There are 3,600 kilojoules in a kilowatt-hour.

How many kilowatt-hours are in a kilojoule?

There are 0.0002777777778 kilowatt-hours in a kilojoule.

How do you convert kilowatt-hours to kilojoules?

To convert kilowatt-hours to kilojoules, multiply the number of kilowatt-hours by 3,600.

What is 5 kilowatt-hours in kilojoules?

5 kilowatt-hours equals 18,000 kilojoules.

Convert between joules, calories, kilocalories, kilowatt-hours and BTU. Open the energy converter to see a value in every unit at once.