Estimate engine or motor power output and convert across common power units.
Overview
Horsepower quantifies mechanical power and is widely used in automotive and industrial contexts.
This calculator supports torque-RPM power calculations and unit conversions.
Use matching torque units and rotational speed units for accurate results.
Steps
Select torque-RPM calculation or unit conversion.
Input values in supported torque units and shaft speed.
Apply standard conversion formula.
Translate output to SI power units.
Assess power at different RPM values.
Math
HP = (Torque * RPM) / 5252 (for lb-ft)
Horsepower in imperial units is derived from torque and rotational speed relationship.
Worked cases
(300*4000)/5252
About 228.5 HP
Power rises with RPM
About 314.2 HP
200*0.7457
About 149.1 kW
Why use this
Questions