Kilojoules to Kilowatt-hours converter

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

1 kJ ≈ 0.000277777777778 kWh
1 kWh = 3600 kJ

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

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

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.

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.

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