Power converter

All power conversions

• Horsepower to kilowatts1 hp = 0.7457 kW
• Kilowatts to horsepower1 kW = 1.341 hp
• Watts to horsepower1 W = 0.001341 hp
• Horsepower to watts1 hp = 745.7 W
• Metric horsepower to horsepower1 PS = 0.98632 hp
• Horsepower to metric horsepower1 hp = 1.0139 PS
• Kilowatts to watts1 kW = 1,000 W
• Watts to kilowatts1 W = 0.001 kW

How power conversion works

Power conversions go through the watt, one joule per second. One kilowatt is 1,000 W, one mechanical horsepower is about 745.7 W, and one BTU per hour, used for air conditioners and heaters, is about 0.293 W.

So a 150 hp engine is about 112 kW, and a 12,000 BTU/h air conditioner (one "ton" of cooling) moves about 3.5 kW of heat. Electricity bills charge for energy, which is power multiplied by time, in kilowatt-hours.