Horsepower Calculator
Calculate engine horsepower from torque and RPM, or torque from horsepower and RPM.
Enter your values and press Calculate.
How to use the Horsepower calculator
Calculate engine horsepower from torque and RPM, or torque from horsepower and RPM. Enter your values above and press Calculate; the result appears instantly, and the formula used is shown below so you can check the working.
Formula
HP = torque (lb·ft) × RPM ÷ 5252. That is why torque and horsepower curves always cross at 5,252 rpm.
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