1. What is Torque Calculation from Horsepower?

Definition: This calculator determines the torque produced by an engine based on its horsepower and RPM.

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 horsepower and torque are equal at 5252 RPM.

3. Importance of Torque Calculation

Details: Torque measures rotational force and is crucial for understanding an engine's pulling power and acceleration capabilities.

4. Using the Calculator

Tips: Enter the engine's horsepower and RPM values. Both must be greater than 0 for accurate calculations.

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, where 1 horsepower equals 550 foot-pounds per second.

Q2: What's the difference between horsepower and torque?
A: Torque measures rotational force, while horsepower measures work done over time (power). Horsepower = (Torque × RPM) / 5252.

Q3: At what RPM are horsepower and torque equal?
A: They are numerically equal at 5252 RPM due to the formula's constant.

Q4: How does torque affect vehicle performance?
A: Higher torque at lower RPMs provides better acceleration and towing capacity, while high-RPM horsepower affects top speed.

Q5: Can I calculate horsepower if I know torque and RPM?
A: Yes, use the formula: HP = (Torque × RPM) / 5252.