What is kilowatt hour?

A kilowatt hour is a unit of energy equal to 1,000 watt hours. It is the standard billing unit used by electricity providers worldwide to measure household and commercial energy consumption.

What is watt hour?

A watt hour is a unit of energy equal to the power of one watt sustained for one hour. It is used to measure small amounts of electrical energy consumption, particularly in battery capacities and portable electronics.

Worked examples

1 kilowatt hour = 1,000 watt hour

1 watt hour = 3,600 joule

More Energy conversions

• Convert kilowatt hour to joule
• Convert kilowatt hour to kilojoule
• Convert kilowatt hour to calorie (thermochemical)
• Convert kilowatt hour to kilocalorie (dietary)
• Convert kilowatt hour to watt hour
• Convert kilowatt hour to megajoule
• Convert kilowatt hour to electronvolt
• Convert kilowatt hour to British thermal unit
• Convert kilowatt hour to therm (US)

Assumption: calorie means thermochemical calorie, and therm means US therm.