This guide helps you easily convert between various power units used in engineering, physics, and everyday life. Whether you're working with milliwatts, watts, kilowatts, megawatts, gigawatts, decibel-milliwatts, decibel-watts, mechanic horsepower, electric horsepower, or BTU/hr, this tutorial provides the formulas and examples you need to make accurate conversions.
In the sections below, you will find detailed explanations and step-by-step examples for converting between different power units.
Formula: Watt = Milliwatt / 1000
Example: Convert 5000 Milliwatts to Watts.
Solution: 5000 mW / 1000 = 5 W
Formula: Megawatt = Watt / 1,000,000
Example: Convert 5,000,000 Watts to Megawatts.
Solution: 5,000,000 W / 1,000,000 = 5 MW
Formula: dBm = 10 * log10(Milliwatt)
Example: Convert 100 Milliwatts to Decibel-milliwatts.
Solution: 10 * log10(100) = 20 dBm
Formula: dBW = 10 * log10(Watt)
Example: Convert 10 Watts to Decibel-watts.
Solution: 10 * log10(10) = 10 dBW
Formula: Watt = Mechanic Horsepower * 745.7
Example: Convert 2 Mechanic Horsepower to Watts.
Solution: 2 hp(I) * 745.7 = 1491.4 W
Formula: Watt = Electric Horsepower * 746
Example: Convert 3 Electric Horsepower to Watts.
Solution: 3 hp(E) * 746 = 2238 W
Formula: Watt = BTU/hr * 0.293071
Example: Convert 1000 BTU/hr to Watts.
Solution: 1000 BTUIT/hr * 0.293071 = 293.071 W