Watt-hour [Wh] to Kilowatt-hour [kWh] Converter

Quick Reference

1 Watt-hour (Wh) = 0.001 Kilowatt-hour (kWh)

1 Kilowatt-hour (kWh) = 1000 Watt-hour (Wh)

Origin value

Target value

kWh

Round result

How to Convert Watt-hour to Kilowatt-hour

1 Wh = 0.001 kWh
1 kWh = 1000 Wh

To convert Watt-hour to Kilowatt-hour, divide the value by 1000 (equivalently, multiply by 0.001). To convert Kilowatt-hour back to Watt-hour, multiply by 1000.

Example: convert 10 Wh to kWh:
10 Wh = 10 x 0.001 = 0.01 kWh

↔ Convert Kilowatt-hour to Watt-hour

Watt-hour

Definition: A watt-hour (symbol Wh) is a unit of energy equal to one watt of power sustained for one hour. It is commonly used to measure electrical energy consumption.

History/origin: The watt-hour is derived from the watt, the SI unit of power, and the hour, a unit of time. It was developed alongside the increasing use of electricity in the late 19th and early 20th centuries.

Current use: Watt-hours are commonly used to measure the energy capacity of batteries, the energy consumption of household appliances, and the amount of electricity generated or consumed by power plants and consumers.

Kilowatt-hour

Definition: A kilowatt-hour (symbol kWh) is a unit of energy equal to one kilowatt (1,000 watts) of power sustained for one hour. It is a standard unit for measuring electrical energy consumption.

History/origin: The kilowatt-hour became widely adopted with the expansion of electrical grids and the need for a practical unit to measure household and industrial energy usage.

Current use: Kilowatt-hours are the standard unit used by utility companies to bill consumers for electricity usage. It's also used to specify the energy output of power plants and the energy consumption of large appliances.