Horsepower Calculator

Calculate horsepower from torque and engine speed using the standard torque-and-RPM relationship.

Preparing Horsepower Calculator

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Input

Enter torque and RPM to estimate engine power in horsepower and convert it to kilowatts. This tool shows the result instantly without step-by-step output.

Input summary

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How to use Horsepower Calculator

Provide the torque figure and engine speed, and the calculator will estimate how much power that torque output represents at that RPM.

What this calculator is for

This calculator is for engine tuning, dyno interpretation, and classroom mechanics when torque data needs to be turned into power output.

Tips

Torque must be in the unit the formula expects, so do not mix pound-feet with other units without converting first.
Horsepower changes with RPM, so the result describes that specific operating point rather than the whole power curve.