Watt
The watt (W) is the unit of power (P). The unit is named after the Schottish engineer James Watt (1736 - 1819). The watt is defined by the relation:
1 joule (J) = 1 watt (W) × 1 second (s)
Related units
Last modified:10 January 2026 12.08 p.m.
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