Horsepower Calculator: Determine Engine HP from Torque & RPM

Calculate Engine Horsepower

Utilize our free online Horsepower Calculator to quickly determine your engine's horsepower (HP) output. Simply input your engine's torque in lb-ft and its corresponding revolutions per minute (RPM), and get instant, accurate results. Perfect for automotive enthusiasts, engineers, and mechanics seeking precise power metrics.

Formula:

Horsepower (HP) = (Torque (lb-ft) × RPM) / 5252

Where:

  • Torque: Rotational force in pound-feet (lb-ft).
  • RPM: Engine speed in revolutions per minute.
  • 5252: A constant used for unit conversion, derived from (33,000 ft·lb/min / 2π radians/revolution).

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