OceanCalc

Engine Horsepower Calculator

Calculate horsepower using multiple methods.

Dyno (Torque × RPM)
Calculate HP from dynamometer readings
lb-ft

Formula:

HP = (Torque × RPM) ÷ 5,252

About Horsepower
  • 1 HP = 746 watts = 0.746 kW
  • HP measures work done over time
  • Torque measures rotational force
  • HP and torque intersect at 5,252 RPM
  • Wheel HP is typically 15-20% less than crank HP

Horsepower

366.5 HP

273.3 kW

Results
Horsepower366.5 HP
Kilowatts273.3 kW
Torque350 lb-ft
MethodDyno (Torque × RPM)
Quick Reference
Economy Car100-150 HP
Family Sedan150-250 HP
Sports Car300-500 HP
Muscle Car400-700 HP
Supercar600+ HP