Torque to Horsepower Calculator

The Formula

The formula for calculating horsepower from torque and RPM is:

\[Horsepower = \frac{Torque (lb-ft) \times RPM}{5252}\]

Where:

• Horsepower: The power output of the engine
• Torque: The rotational force produced by the engine (in pound-feet, lb-ft)
• RPM: The engine speed (in revolutions per minute)
• 5252: A constant derived from the definition of horsepower

Calculation Steps

1. Multiply the torque by the RPM
2. Divide the result by 5252

Example Calculation

Let's calculate the horsepower for an engine with 200 lb-ft of torque at 5000 RPM:

1. Horsepower = (200 × 5000) ÷ 5252
2. Horsepower = 1,000,000 ÷ 5252
3. Horsepower ≈ 190.4 HP

Visual Representation

This visual represents the relationship between torque, RPM, and the resulting horsepower based on our example calculation.