Horsepower Calculator
Calculate horsepower from torque and RPM.
Result
Results are estimates for general information only and are not professional advice.
Horsepower from torque
Engine horsepower relates to torque and rotational speed by the formula HP = torque × RPM ÷ 5252. This calculator returns the horsepower and the equivalent in kilowatts.
Frequently Asked Questions
What is the Horsepower Calculator?
Calculate horsepower from torque and RPM. It runs instantly in your browser and is completely free to use.
What do I need to enter to use the Horsepower Calculator?
The Horsepower Calculator asks for the following values (2): Torque (lb-ft), RPM. Fill them in and the result appears immediately — the calculation runs on your own device, so nothing you type is sent to a server.
How accurate is the Horsepower Calculator?
The Horsepower Calculator uses standard, widely-accepted formulas, so its figures are reliable estimates for everyday planning. They are not a substitute for advice from a qualified professional.
Is the Horsepower Calculator free, and do I need an account?
Yes. The Horsepower Calculator — and every other calculator on Calculatis — is completely free, with no registration, no download and no limit on how often you use it.