Power Converter
Convert between 10 units of power — watts, kilowatts, megawatts, mechanical horsepower, metric horsepower (PS), BTU/hour, BTU/second, calorie/second, and ton of refrigeration.
Quick conversions
All units
About the Power Converter
Power is the rate at which energy is transferred or work is done — energy per unit time. The SI unit is the watt (W). Mechanical engineers often use horsepower (hp), while refrigeration engineers use tons of refrigeration. Converting between these units is essential when comparing motors, engines, generators, and heating/cooling systems across different regional standards.
Quick facts
- ›One mechanical horsepower equals exactly 745.69987 watts
- ›A typical household microwave oven uses 600–1,200 watts
- ›One ton of refrigeration = 12,000 BTU/hour = 3,516.85 watts
- ›The human body at rest produces roughly 80 watts of heat
Common uses: Mechanical engineering, electrical engineering, HVAC, motorsport, appliance ratings