How to use this converter
What this category measures
Power is the rate at which energy is transferred or used. Watts describe small electronics and appliances, kilowatts describe equipment and motors, megawatts describe large systems, and electric horsepower provides a familiar rating for some mechanical and electrical equipment.
Where these conversions help
Use this converter for appliance labels, motor specifications, generator capacity, solar systems, industrial equipment, and engineering notes. Power is a rate, so it should not be confused with electrical energy measured in watt-hours or joules.
How results are calculated
The watt is the reference unit. Metric prefixes scale power by powers of 1,000, and electric horsepower is treated as 746 watts. For a real system, power may also depend on voltage, current, efficiency, phase, and operating conditions.