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1 Watt =

0.0013410221 Horsepower

(rounded to 8 digits)

A watt is the standard unit of power. It is the power needed to do one joule of work per second. A typical incandescent light bulb uses 40-100 watts.

Mechanical horsepower is commonly used to measure the maximum power of a car's engine in the United States or the UK. It is approximately equal to 746 watts.