Skip to content
Engyna

Convert kilowatt-hours to joules

Convert kilowatt-hours (kWh) to joules (J). 1 kWh = 3,600,000 J, and 1 J = 2.77778 × 10⁻⁷ kWh.

1 kWh = 3,600,000 J

kWh to Joules formula

J = kWh × 3,600,000

Multiply the number of kilowatt-hours by 3,600,000.

Example: To convert 1 kWh to joules: 1 × 3,600,000 = 3,600,000 J.

Quick answers

What is 1 kWh in joules?
1 kWh = 3,600,000 J
What is 100 kWh in joules?
100 kWh = 360,000,000 J
What is 1,000 kWh in joules?
1,000 kWh = 3,600,000,000 J

kWh to Joules conversion table

Joules to kWh table
kilowatt-hours (kWh)joules (J)
1 kWh3,600,000 J
2 kWh7,200,000 J
5 kWh18,000,000 J
10 kWh36,000,000 J
20 kWh72,000,000 J
50 kWh180,000,000 J
60 kWh216,000,000 J
75 kWh270,000,000 J
100 kWh360,000,000 J
500 kWh1,800,000,000 J
1,000 kWh3,600,000,000 J
3,000 kWh10,800,000,000 J

Frequently asked questions

How many joules are in a kilowatt-hour?

There are 3,600,000 joules in a kilowatt-hour (1 kWh = 3,600,000 J).

How do I convert kilowatt-hours to joules?

Multiply the number of kilowatt-hours by 3,600,000. To convert 1 kWh to joules: 1 × 3,600,000 = 3,600,000 J.

Is the kWh to Joules conversion exact?

Yes. Both units are defined exactly, so 1 kilowatt-hour is exactly 3,600,000 joules. Results on this page are rounded to six significant digits; pick more decimals in the converter if you need them.

What is 1 kWh in joules?

1 kWh = 3,600,000 J.

How do I convert joules back to kilowatt-hours?

Use the reverse relationship: 1 J = 2.77778 × 10⁻⁷ kWh. The Joules to kWh page has a converter and a full table.

More energy conversions

All unit conversions