Torque to HP Calculator

👤 By Why Calculator Team ✔ Reviewed by Matt Le (Founder of Why Calculator) 📅 Last Updated April 12, 2026

Torque to HP Calculator

Torque:

RPM:

Torque	RPM	Power (W)	Power (kW)	HP
–	–	–	–	–

Disclaimer: While we strive to ensure the accuracy of our calculator tools, we cannot be held responsible for any damages or financial losses resulting from their use.

Are you curious about how much hp your engine produces based on its torque? Want to calculate power in watts, kilowatts, or horsepower effortlessly? This Torque to HP Calculator is here to help! Simply input the torque value, select your preferred unit (N-m or lb-ft), and enter the RPM.

With just a click, you’ll get detailed results, including torque, RPM, and power in watts, kilowatts, and horsepower. Whether you’re an automotive enthusiast or an engineer, this tool makes complex calculations simple and quick.

Try it now and convert torque to hp with precision!

How to Convert Torque to HP?

To convert torque to horsepower (HP), you need to know the torque value and the rotational speed (RPM) at which the torque is being applied. The formula to calculate horsepower from torque and RPM is:

HP = {Torque (lb-ft) × RPM} / 5252

This formula is derived from the relationship between torque, rotational speed, and power. Here’s a step-by-step explanation:

Torque (T) is a measure of rotational force, typically in pound-feet (lb-ft) or Newton meters (Nm).
RPM is the rotational speed in revolutions per minute.
The constant 5252 is a conversion factor.

Example 1: Torque in lb-ft

If an engine produces 300 lb-ft of torque at 4000 RPM, the horsepower is calculated as:

HP = (300 × 4000) / 5252 = 1,200,000 / 5252

≈ 228.5 HP

Example 2: Torque in Nm