Kilowatt-hours to Kilojoules converter

To convert kilowatt-hours to kilojoules, enter the value in the first field. The result in kilojoules is calculated automatically using the exact conversion factor.

1 kWh = 3600 kJ
1 kJ ≈ 0.000277777777778 kWh

Formula: kJ = kWh × 3600
kWh ≈ kJ × 0.000277777777778

Definitions: 1 kWh = 1000 Wh; 1 kJ = 1000 J

The kilowatt-hour (kWh) is the energy of one kilowatt working for one hour, or 3.6 million joules. It is the unit on household electricity bills and is used for electric-vehicle battery capacity and consumption.

The kilojoule (kJ) is 1,000 joules. It is used for food energy on nutrition labels in Australia, New Zealand and Europe, often next to kcal, and for reaction energies in chemistry.

See the conversion table with commonly used values, handy for quick reference or study.