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Torque to Horsepower Converter

lb-ft
RPM

Result

Calculated result Ready Change any value to calculate instantly.
↗ Conversion

Torque to Horsepower calculator with the required physical inputs.

Formula

Horsepower = Torque (lb-ft) × RPM ÷ 5252.113122
  • Calculate mechanical horsepower from torque in pound-feet and rotational speed in RPM.
  • The main inputs are Torque, Speed. Enter them in the units and format shown in the calculator.
  • For unit conversions, the calculator applies the conversion relationship shown above and keeps source and target units consistent with the selected options.
  • Changing any input above recalculates the result with the same calculation engine used by this page.

Example: Torque to Horsepower

Inputs
  • Torque: 100 lb-ft
  • Speed: 5252.113122 RPM

100 lb-ft at about 5252.113 RPM = 100 hp.

Sample result: Calculating…

Frequently asked questions

Why are multiple inputs required?

Calculate mechanical horsepower from torque in pound-feet and rotational speed in RPM.

What does the Torque to Horsepower calculate?

Torque to Horsepower calculator with the required physical inputs.

Which values should I enter?

Enter Torque, Speed using the units and format shown beside each field.

What formula does this calculator use?

The calculator uses the following relationship: Horsepower = Torque (lb-ft) × RPM ÷ 5252.113122.

Why might my result differ from another source?

Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.

Does the result update automatically?

Yes. Changing an input updates the result using the same calculation engine shown on this page.

Page information

Updated: October 8, 2026