1. What is the Torque Formula?

The torque formula calculates the rotational force produced by an engine or motor. The formula T = (HP × 7121) / RPM converts horsepower and rotational speed into torque in Newton-meters (Nm).

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( T \) — Torque in Newton-meters (Nm)
• \( HP \) — Horsepower
• \( RPM \) — Revolutions per minute

Explanation: The constant 7121 is derived from the conversion factors between horsepower, RPM, and Newton-meters to provide accurate torque calculations.

3. Importance of Torque Calculation

Details: Torque calculation is essential for evaluating engine performance, designing mechanical systems, and understanding the power characteristics of motors and engines in various applications.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: Why is torque important in engines?
A: Torque measures the rotational force an engine can produce, which directly affects acceleration, towing capacity, and overall vehicle performance.

Q2: What is the relationship between horsepower and torque?
A: Horsepower is calculated from torque and RPM (HP = Torque × RPM / 5252). They are related but measure different aspects of engine performance.

Q3: What are typical torque values for different engines?
A: Torque values vary widely by engine type. Small car engines might produce 100-200 Nm, while diesel truck engines can produce over 1000 Nm.

Q4: How does RPM affect torque output?
A: Most engines have a torque curve where torque peaks at specific RPM ranges, then decreases at higher RPMs due to various engine characteristics.

Q5: Can this formula be used for electric motors?
A: Yes, the formula works for any rotating machinery, including electric motors, though electric motors typically have different torque characteristics than combustion engines.