Power Conversion Calculator

See a complete list of conversion calculators for each unit of power by selecting one below.

You'll probably also find our wattage or power factor calculators helpful.

Units of Power Measurement

Units of power include watts, microwatts, milliwatts, kilowatts, megawatts, horsepower, btu per hour, and kilocalories per hour.

Equivalent power measurements, including equivalent watt, horsepower, btu per hour, and kilocalories per hour values.
Convert From	Watt	Microwatt	Milliwatt	Kilowatt	Megawatt	Horsepower	Btu Per Hour	Kilocalorie Per Hour
1 watt =	1 W	1,000,000 µW	1,000 mW	0.001 kW	0.000001 MW	0.001341 hp	3.412142 Btu/h	0.860421 kcal/h
1 microwatt =	0.000001 W	1 µW	0.001 mW	0.000000001 kW	0.000000000001 MW	0.000000001341 hp	0.0000034121 Btu/h	0.00000086042 kcal/h
1 milliwatt =	0.001 W	1,000 µW	1 mW	0.000001 kW	0.000000001 MW	0.000001341 hp	0.003412 Btu/h	0.00086 kcal/h
1 kilowatt =	1,000 W	1,000,000,000 µW	1,000,000 mW	1 kW	0.001 MW	1.341022 hp	3,412 Btu/h	860.420815 kcal/h
1 megawatt =	1,000,000 W	1,000,000,000,000 µW	1,000,000,000 mW	1,000 kW	1 MW	1,341 hp	3,412,142 Btu/h	860,421 kcal/h
1 horsepower =	745.699872 W	745,699,872 µW	745,700 mW	0.7457 kW	0.000746 MW	1 hp	2,544 Btu/h	641.615691 kcal/h
1 btu per hour =	0.293071 W	293,071 µW	293.071 mW	0.000293 kW	0.00000029307 MW	0.000393 hp	1 Btu/h	0.252164 kcal/h
1 kilocalorie per hour =	1.162222 W	1,162,222 µW	1,162 mW	0.001162 kW	0.0000011622 MW	0.001559 hp	3.965667 Btu/h	1 kcal/h

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