Power Converter
Convert between watts, kilowatts, horsepower and BTU per hour.
About this calculator
Power ratings show up in different units depending on the industry, car engines and pumps in horsepower, appliances and electric motors in watts or kilowatts, HVAC units in BTU per hour, and comparing specs across these unit systems by hand means juggling several unrelated multipliers. This calculator converts a power value between watts, kilowatts, mechanical horsepower and BTU per hour by routing through a common base unit of watts, so a comparison like a car's horsepower against an electric motor's kW rating comes out exact rather than eyeballed. It's useful for comparing engine or motor specs quoted in different units, sizing an air conditioner rated in BTU/h against its equivalent wattage, or converting between metric and imperial power figures on a product spec sheet.
Worked example
1 horsepower to watts
Result: 745.7 W
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