Kilowatt-hour (kWh)
The kilowatt-hour is the main household electricity unit on bills and appliances.
History: the kilowatt-hour became the standard electricity-billing unit for household and industrial energy.
Quickly convert kilowatt-hours to kilojoules without lookup tables or manual math.
This page is focused on converting kilowatt-hours to kilojoules. Type a number into the first field and the result appears immediately in the second field.
Example: 1 kWh = 3600 kJ. Conversion formula: result = value × 3600000 / 1000.
Use this converter for everyday calculations, study notes, engineering checks, and quick value verification without installing a separate app.
The kilowatt-hour is the main household electricity unit on bills and appliances.
History: the kilowatt-hour became the standard electricity-billing unit for household and industrial energy.
The kilojoule equals 1000 joules and is convenient for food energy, heat, and engineering calculations.
History: the kilojoule became a convenient multiple of the joule for food, heat, and engineering calculations.
Enter a value in the Kilowatt-hour field. The converter applies the formula "result = value × 3600000 / 1000" and immediately shows the result in kilojoules.
1 kWh = 3600 kJ.
Yes. Use the swap button or choose the reverse pair from the full conversion list.