FreeUnitConvertor

Kilowatt-hours to Joules

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

⇄

1 kWh = 3,600,000 J

1 kilowatt-hour equals3,600,000 J
1 joule equals2.777777778 × 10⁻⁷ kWh
FormulaJ = kWh × 3,600,000

How to convert kilowatt-hours to joules

To convert kilowatt-hours to joules, multiply the number of kilowatt-hours by 3,600,000.

J = kWh × 3,600,000

Example

Convert 5 kilowatt-hours to joules:

5 kWh × 3,600,000 = 18,000,000 J

Kilowatt-hour to joule conversion chart

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

Going the other way? See the joules 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.

Joule (J)

The joule is the SI unit of energy: the work done by a force of one newton over one meter.

Frequently asked questions

How many joules are in a kilowatt-hour?

There are 3,600,000 joules in a kilowatt-hour.

How many kilowatt-hours are in a joule?

There are 2.777777778 × 10⁻⁷ kilowatt-hours in a joule.

How do you convert kilowatt-hours to joules?

To convert kilowatt-hours to joules, multiply the number of kilowatt-hours by 3,600,000.

What is 5 kilowatt-hours in joules?

5 kilowatt-hours equals 18,000,000 joules.

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