Torque Converter

Convert between torque, horsepower, and RPM calculations for mechanical systems

Conversion Parameters

What do you want to calculate?

Horsepower (HP) *

RPM *

Alternative: Calculate torque from force and radius

Radial Force (lbs)

Radius/Lever Arm (feet)

Select calculation mode and enter the required parameters

Basic Formulas:

• Torque = (HP × 5252) / RPM

• HP = (Torque × RPM) / 5252

• RPM = (HP × 5252) / Torque

• Torque = Force × Radius

Unit Conversions:

• 1 lb-ft = 1.356 N⋅m

• 1 HP = 0.746 kW

• 1 HP = 550 ft-lb/sec

Constant: 5252 = 33,000 / (2π)