Calculators
Horsepower Calculator
Calculate horsepower from torque and RPM.
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Result
Horsepower
285.6 hp
hp = torque × rpm ÷ 5252
About the Horsepower Calculator
Horsepower and torque are linked by engine speed. Enter torque (lb-ft) and RPM and the calculator returns horsepower using hp = torque × rpm ÷ 5252. It's the classic formula car enthusiasts use to convert dyno torque figures into power.
How to use the Horsepower Calculator
- 1Enter your torque and engine RPM.
- 2Read the result instantly — it recalculates as you type.
- 3Adjust the numbers to model different scenarios.
Frequently asked questions
How do you calculate horsepower?
Horsepower = torque (lb-ft) × RPM ÷ 5252. The two curves always cross at 5252 RPM.
Torque vs horsepower?
Torque is rotational force; horsepower is the rate of doing work (torque over time). Both matter for how a car feels.