FREE · AUTO & TRAVEL
Horsepower and Torque Calculator.
Convert torque and rpm to horsepower, kW and PS, or power and rpm to torque in N·m and lb·ft.
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How to use Horsepower and Torque Calculator
Choose what to calculate, enter the engine speed and the torque or power with its unit.
How it works
Power = torque × angular speed: hp = lb·ft × rpm ÷ 5,252; kW = N·m × rpm ÷ 9,549.
Example
400 N·m at 5,252 rpm is 220 kW, 295 hp or 299.1 PS.
Questions about Horsepower and Torque Calculator
Is Horsepower and Torque Calculator free, and do I need an account?
Yes. This tool is free to use in your browser without an account. Processing takes place on your device.
What are the limits and what should I check?
Crank figures; wheel power measured on a dyno is lower. Everything is calculated in your browser; nothing you type is uploaded. Review the result before using it in your work.
Is my input sent to a server?
Your input is processed in your browser and is not uploaded by this tool. Files and pasted text are cleared when the page is refreshed. Normal website requests are still required to load the page and its libraries. Read the privacy explanation.