Watt-Hours to Kilowatt-Hours Converter

1 kWh
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Understanding Watt-Hours and Kilowatt-Hours

What is a Watt-Hour (Wh)?

A watt-hour is a unit of energy equivalent to one watt of power being used continuously for one hour. It's commonly used to measure smaller amounts of electrical energy consumption.

What is a Kilowatt-Hour (kWh)?

A kilowatt-hour equals 1,000 watt-hours and is the standard unit used by electric utilities to measure and bill for electricity usage. One kWh represents the energy used by a 1,000-watt appliance running for one hour.

Conversion Formula

To convert watt-hours to kilowatt-hours, divide the number of watt-hours by 1,000:

kWh = Wh ÷ 1,000

Common Usage Examples

  • A 60W light bulb running for 10 hours uses 600 Wh (0.6 kWh)
  • A 2000W electric heater running for 2 hours uses 4000 Wh (4 kWh)
  • A typical US household uses about 30 kWh per day