Skip to content
Engyna

Convert joules to kilowatt-hours

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

1 J = 2.77778 × 10⁻⁷ kWh

Joules to kWh formula

kWh = J ÷ 3,600,000

Divide the number of joules by 3,600,000.

Example: To convert 1 J to kilowatt-hours: 1 ÷ 3,600,000 = 2.77778 × 10⁻⁷ kWh.

Quick answers

What is 1 J in kilowatt-hours?
1 J = 2.77778 × 10⁻⁷ kWh
What is 1,000 J in kilowatt-hours?
1,000 J = 0.000277778 kWh

Joules to kWh conversion table

kWh to Joules table
joules (J)kilowatt-hours (kWh)
1 J2.77778 × 10⁻⁷ kWh
10 J0.00000277778 kWh
100 J0.0000277778 kWh
1,000 J0.000277778 kWh
4,184 J0.00116222 kWh
10,000 J0.00277778 kWh
100,000 J0.0277778 kWh
1,000,000 J0.277778 kWh
3,600,000 J1 kWh

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), so 1 J = 2.77778 × 10⁻⁷ kWh.

How do I convert joules to kilowatt-hours?

Divide the number of joules by 3,600,000. To convert 1 J to kilowatt-hours: 1 ÷ 3,600,000 = 2.77778 × 10⁻⁷ kWh.

Is the Joules to kWh conversion exact?

Yes. Both units are defined exactly, so 1 joule is exactly 2.77777777778 × 10⁻⁷ kilowatt-hours. Results on this page are rounded to six significant digits; pick more decimals in the converter if you need them.

What is 1 J in kilowatt-hours?

1 J = 2.77778 × 10⁻⁷ kWh.

How do I convert kilowatt-hours back to joules?

Use the reverse relationship: 1 kWh = 3,600,000 J. The kWh to Joules page has a converter and a full table.

More energy conversions

All unit conversions