Skip to main content

Horsepower Conversion

 

Horsepower Conversion Table
Multiply By To Get
  2545.45766 BTU per hour, BTU/hr
  42.42429433 BTU per minute, BTU/min
  0.707071572 BTU per second, BTU/sec
  1980796.979 foot pound-force per hour
  33013.28298 foot pound-force per minute
  550.221383 foot pound-force per second
  1 horsepower, hp
  17702.8489 pound square foot per cubic second
  0.212121472 ton of refrigeration, ton
  2.6856E+13 dyne centimeter per hour
  4.476E+11 dyne centimeter per minute
  7460000000 dyne centimeter per second
  2685600 joule per hour
  44760 joule per minute
  746 joule per second
  746 watt, W
  0.746 kilowatt, kW
  0.000746 megawatt, MW
  0.000000746 gigawatt, GW
  2685600 newton meter per hour
  44760 newton meter per minute
  746 newton meter per second

Horsepower (HP) is a unit of power that can be converted into various other units of power depending on the system being used.          

P D Logo 1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Horsepower Conversion Factor

  • 1 horsepower = 5252 RPM  -  When charting torque and horsepower, the math always cross at 5252 RPM. 
Mechanical Horsepower (Imperial Horsepower)
  • 1 HP  =  745.699872 or 746 watts (W)
  • 1 HP  =  0.7457 or 0.746 kilowatts (kW)
  • 1 HP  =  550 foot-pounds per second (ft-lbf/s)
  • 1 HP  =  33,000 foot-pounds per minute (ft-lbf/min)
  • 1 HP  ≈  1.014 metric horsepower (PS or CV)

Metric Horsepower (PS or CV)

  • 1 PS (Pferdestärke)  =  735.49875 or 735.5 watts (W)
  • 1 PS  =  0.7355 kilowatts (kW)
  • 1 PS  ≈  0.9863 mechanical horsepower (HP)

Electrical Horsepower

  • 1 HP (electric)  =  746 watts (W)
  • 1 HP (electric)  =  0.746 kilowatts (kW)

Boiler Horsepower

  • 1 Boiler HP  =  9,809.5 watts (W)
  • 1 Boiler HP  =  9.809 kilowatts (kW)
  • 1 Boiler HP  =  33,475 BTU/hour

Water Horsepower

  • 1 HP  =  3960 gal/min/foot
  • 1.341 HP  =  1 kW
  • 1 cu-ft / sec  =  448 GPM
  • 1 PSI  =  a head of 2.309 ft (water weight)

Other Units of Power Conversion

  • 1 HP = 42.44 BTU per minute (British Thermal Units)
  • 1 HP  ≈  2544.434187 or 2545 BTU per hour

Quick Conversion Factors

  • 1 kilowatt (kW)  =  1.341 HP (mechanical)
  • 1 watt (W)  ≈  0.001341 HP (mechanical)
  • 1 metric HP (PS)  =  0.986 mechanical HP