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Horsepower Calculator

Find horsepower from torque and RPM.

Calculated Output

Horsepower (hp) 300

Power (kW) 223.71

Formula: hp = torque × RPM ÷ 5252

Step-by-Step Breakdown

1. Values used:

2. Torque = 300 lb-ft

3. Engine speed = 5,252 RPM

5. Horsepower = 300hp

6. Power = 223.71kW

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The math behind it

hp = torque (lb-ft) × RPM ÷ 5252. At 5252 RPM, hp equals torque.

300 lb-ft at 5252 RPM → 300 hp.

Why 5252?

It's where the hp and torque curves always cross.