1. What is a Torque Calculator from Power?

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

Purpose: It helps engineers, mechanics, and automotive enthusiasts determine the torque produced by an engine or motor.

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 intersect at 5252 RPM.

3. Importance of Torque Calculation

Details: Torque is crucial for understanding an engine's pulling power, acceleration capability, and overall performance characteristics.

4. Using the Calculator

Tips: Enter the horsepower and RPM values. Both must be greater than 0. The calculator will compute the torque in pound-feet.

5. Frequently Asked Questions (FAQ)

Q1: Why is 5252 the magic number in the formula?
A: 5252 RPM is where horsepower and torque (in lb-ft) are numerically equal because of the conversion factors between rotational and linear power.

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: Can I use this for electric motors?
A: Yes, the formula works for any rotational power source, including electric motors, as long as you know the horsepower and RPM.

Q4: What if my RPM is zero?
A: The formula is undefined at zero RPM. Engines produce torque only when rotating.

Q5: How does torque relate to vehicle performance?
A: Higher torque at lower RPMs generally means better acceleration and towing capability, while high-RPM horsepower affects top speed.