1. What is Torque Calculation from HP?

Definition: This calculator determines the torque output based on horsepower and RPM (revolutions per minute).

Purpose: It helps engineers, mechanics, and automotive 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 measures rotational force and is critical for understanding engine performance, especially for acceleration and towing capacity.

4. Using the Calculator

Tips: Enter the horsepower and RPM values. Both must be greater than zero for calculation.

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. It's where horsepower and torque values intersect on dyno charts.

Q2: What's the difference between torque and horsepower?
A: Torque measures rotational force, while horsepower measures the rate at which work is done (torque × RPM).

Q3: How does RPM affect torque?
A: For a given horsepower, torque decreases as RPM increases, following an inverse relationship.

Q4: What's a typical torque value for cars?
A: Passenger cars typically produce 100-400 lb-ft, while performance vehicles can exceed 500 lb-ft.

Q5: Can I calculate HP if I know torque and RPM?
A: Yes, use the formula: \( HP = \frac{T \times RPM}{5252} \)