1. What is Horsepower to Torque Conversion?

Definition: This calculator converts horsepower (HP) to torque (lb-ft) at a specific RPM using the fundamental relationship between power and rotational force.

Purpose: It helps automotive engineers, mechanics, and enthusiasts understand engine performance characteristics.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( T \) — Torque (pound-feet)
• \( HP \) — Horsepower
• \( RPM \) — Revolutions per minute

Explanation: The constant 5252 comes from the relationship between rotational speed and power, where torque and horsepower are equal at 5252 RPM.

3. Importance of Torque Calculation

Details: Torque represents the rotational force an engine produces, which directly affects acceleration, towing capacity, and overall vehicle performance.

4. Using the Calculator

Tips: Enter the engine's horsepower and the RPM at which you want to calculate torque. Both values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is 5252 the magic number in the formula?
A: This constant comes from the conversion between rotational speed and power units (1 horsepower = 550 ft-lb/sec).

Q2: What's more important - horsepower or torque?
A: Both are important. Horsepower determines top speed potential, while torque affects acceleration and pulling power.

Q3: How does RPM affect torque?
A: Engines typically produce maximum torque at specific RPM ranges, which is why this calculation is RPM-dependent.

Q4: Can I use this for electric motors?
A: Yes, the same formula applies to any rotational power system, including electric motors.

Q5: What if my RPM is exactly 5252?
A: At exactly 5252 RPM, torque (lb-ft) and horsepower will be numerically equal.