Torque to HP Calculator

Your details

Rotational force produced by the engine or motor at the given RPM.
lb-ft
Rotational speed in revolutions per minute at which torque or power is measured.
RPM
Optional: enter the vehicle or machine weight to calculate power-to-weight ratio. Leave 0 to skip.
lbs
HorsepowerSports / Performance
299.99HP

Mechanical horsepower (1 HP = 550 ft-lbf/s = 745.7 W)

Power (kW)223.71kW
Torque300
Torque (N-m)406.75N-m
Torque (lb-ft)300lb-ft
Horsepower (HP)299.99
Power (kW)223.71

300.0 HP (223.7 kW) at 5,252 RPM

  • At 5,252 RPM, 300.0 lb-ft of torque produces 300.0 HP (223.7 kW).
  • At 5,252 RPM, the numerics of HP and torque in lb-ft are always equal. This is where their curves cross on an engine dyno chart.
  • Equivalent torque at 5,252 RPM would be 300.0 lb-ft, where the HP and torque curves always intersect.

Next stepTo build a torque curve, vary the RPM input across your engine's operating range and note the HP at each point.

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