The watt (symbol: W) is the SI unit of power. It is named in honour of the physicist James Watt (1736–1819).

Definition

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The watt is the rate a source of energy expends or produces one joule during one second, so the same quantity may be referred to as a joule per second, with the symbol J/s. It can also be written as kg·m²·s⁻³.

It is equivalent to one volt ampere (1 V·A) or 1/746 of a horsepower.

SI derived units | Units of power

Ват | Watt | Watt | Watt | Watt | Watt (Einheit) | Vatt (ühik) | Watt | Vatio | Vato (unuo) | Watt | Watt | Watt | 와트 | Watt | Watt | Watt | ואט | Vats | Watt | Watt | ワット | Watt | Watt | Wat | Watt | Ватт | Watt | Watt | Ват | Watti | Watt | Watt | 瓦特 (单位)