Power Converter
Convert between watt, kilowatt, megawatt, horsepower, BTU/hour, and more.
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All Conversions
Watt (W)1,000
Kilowatt (kW)1
Megawatt (MW)0.001
Gigawatt (GW)0.000001
Horsepower (hp)1.341022
BTU/hour3,412.141635
Foot-pound/second737.561033
Milliwatt (mW)1,000,000
Frequently Asked Questions
How many watts are in one horsepower?
One mechanical horsepower equals approximately 745.7 watts. This is the standard conversion used in automotive and industrial contexts.
What is the difference between kW and kWh?
A kilowatt (kW) measures power, which is the rate of energy use at a given moment. A kilowatt-hour (kWh) measures energy, which is the total amount consumed over time.
How do I convert BTU/hour to watts?
Multiply the BTU/hour value by 0.29307 to get the equivalent in watts. For example, 10,000 BTU/hr is approximately 2,930.7 watts.