To convert Watts (W) to a horsepower rating (HP) simply multiply the Watts by 0.00134
W x 0.00134 = HP
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746 watts equals one horsepower.
A 5 horsepower motor would have 3,730 watts of power.
You are thinking watts to horsepower, not amps to horsepower. Please restate the question.
1 horsepower = 746 watts 1 watt = 0.00134 horsepower (rounded)
Electrical power is expressed in watts or in jouls per secondAnother AnswerThere is no such thing as 'electrical power'. Power is simply a rate: the rate of doing work. Power can be measured in watts (in the SI system) or in horsepower (in the Imperial system). There is no reason why the power of a heater can't be measured in horsepower or the power of a car can't be measured in watts.