Watt (W) - Unit Information & Conversion
🔄 Quick Convert Watt
What is a Watt?
The watt is the SI unit of power, measuring the rate of energy transfer. Named after James Watt, it equals one joule per second and is widely used for electrical power ratings of appliances, light bulbs, and electronic devices.
History of the Watt
Named in 1882 after Scottish engineer James Watt (1736-1819) who improved the steam engine. Officially adopted as the SI unit of power in 1960. One watt was originally defined to relate to mechanical horsepower.
Watt Conversion Formulas
To Milliwatt:
To Kilowatt:
To Megawatt:
To Gigawatt:
To Horsepower:
To Metric Horsepower:
To Electric Horsepower:
To BTU per Hour:
To BTU per Minute:
To BTU per Second:
To Foot-pound per Second:
To Foot-pound per Minute:
To Calorie per Second:
To Kilocalorie per Hour:
To Ton of Refrigeration:
To Erg per Second:
To Joule per Second:
Convert Watt
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