Horsepower to Watts Converter
Convert mechanical horsepower to watts and kilowatts. Useful for engine and motor specifications.
hp
Watts
111,855.0 W
Kilowatts111.855 kW
BTU per Hour381,664.5 BTU/hr
How to Convert Horsepower to Watts
Formula
Watts = Horsepower × 745.7
Kilowatts = Horsepower × 0.7457
One mechanical horsepower equals 745.7 watts. This is the standard mechanical (or imperial) horsepower defined by James Watt. Note that metric horsepower (PS) is slightly different at 735.5 watts.
Example Calculation
Convert 150 horsepower to watts and kilowatts.
- 01Watts = 150 × 745.7 = 111,855 W
- 02Kilowatts = 150 × 0.7457 = 111.855 kW
- 03BTU/hr = 150 × 2544.43 = 381,664.5 BTU/hr
Frequently Asked Questions
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