Power Converters
Convert between power units used in motors, appliances, electrical systems, and HVAC ratings. This hub treats power as energy transfer rate and applies exact multiplicative factors anchored to watts (W).
Explanation
Power is the rate of energy transfer over time, commonly expressed as watts (W), where 1 W = 1 J/s. This hub normalizes every factor through watts so SI scaling (kW, MW, GW), horsepower variants (hp and PS), and thermal rate units (BTU/h) remain consistent and reversible. Mechanical horsepower (hp) and metric horsepower (PS) are close but not identical definitions, so each has its own fixed watt equivalence. BTU per hour is a thermal power rate widely used in HVAC specifications. All relationships here are fixed multiplicative scale changes with no additive offsets.
Power pages are organized by conversion direction so mirror leaves remain aligned and comparable.
Read more
Open a family hub to reach leaf pages with direct answers, calculator output, and reverse links built on the same constants.
Frequently Asked Questions
What is power?
Power is the rate at which energy is transferred or converted, expressed as work per unit time.
What is the SI unit of power?
The SI unit is the watt (W), equal to one joule per second.
What is the difference between hp and PS?
Mechanical horsepower (hp) and metric horsepower (PS) use different definitions, so they are close but not equal.
Why is kW common for motors and appliances?
Kilowatts keep typical motor and appliance ratings readable while still mapping exactly to watts.
What does BTU/h represent?
BTU per hour is a thermal power rate commonly used in HVAC and heating/cooling equipment specifications.
Are these conversions purely multiplicative?
Yes. Power conversions in this hub are purely multiplicative with no additive offsets.