Convert 21 Watts to Horsepower
How much power is 21 watts? What is 21 watts in horsepower? 21 W to HP conversion.
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21 Watts ≈
0.028161464 Mechanical Horsepower
result rounded
Decimal places
Result in Plain English
21 watts is equal to about 0.0282 horsepower.
To a Percentage
21 watts ≈ 2.82% of a horsepower.
In Scientific Notation
21 watts
= 2.1 x 101 watts
≈ 2.81615 x 10-2 horsepower
Watts
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.
Horsepower
Mechanical horsepower is commonly used to measure the maximum power of a car's engine in the United States. It is slightly different than Metric horsepower, which is used in Europe.