1. What is an HP vs Torque Calculator?

Definition: This calculator converts between torque and horsepower using engine RPM.

Purpose: It helps automotive enthusiasts, engineers, and mechanics understand the relationship between these two important engine performance metrics.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( HP \) — Horsepower
• \( T \) — Torque (lb-ft)
• \( RPM \) — Revolutions per minute

Explanation: The constant 5252 comes from the conversion between foot-pounds per minute and horsepower (1 HP = 550 ft-lb/sec = 33,000 ft-lb/min).

3. Importance of HP and Torque Calculation

Details: Understanding this relationship helps in engine tuning, performance analysis, and comparing different engines.

4. Using the Calculator

Tips: Enter torque in pound-feet and engine speed in RPM. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why is 5252 RPM special?
A: At 5252 RPM, horsepower and torque values are always equal numerically due to the conversion constant.

Q2: Can I calculate torque if I know HP and RPM?
A: Yes, rearrange the formula: \( T = \frac{HP \times 5252}{RPM} \)

Q3: What's a typical torque value for cars?
A: Most passenger cars produce 100-300 lb-ft, while performance vehicles may exceed 500 lb-ft.

Q4: Does this work for electric motors?
A: Yes, the formula applies to any rotating machinery, including electric motors.

Q5: Why do diesel engines have high torque but lower HP?
A: Diesels typically operate at lower RPMs, which reduces their HP despite having high torque.