1. What is a Torque to Power Calculator?

Definition: This calculator converts torque and rotational speed (RPM) to mechanical power output.

Purpose: It helps engineers, mechanics, and automotive enthusiasts determine the power output of engines and motors based on torque measurements.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( P_w \) — Power (watts)
• \( T \) — Torque (pound-feet)
• \( RPM \) — Rotational speed (revolutions per minute)

Explanation: Torque multiplied by angular velocity (converted from RPM to radians per second) gives power in watts. The result is also converted to horsepower.

3. Importance of Torque-Power Conversion

Details: Understanding the relationship between torque and power is crucial for engine performance analysis, motor selection, and mechanical system design.

4. Using the Calculator

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

5. Frequently Asked Questions (FAQ)

Q1: Why is power calculated in both watts and horsepower?
A: Watts are the SI unit, while horsepower is commonly used in automotive and mechanical applications.

Q2: What's the conversion between watts and horsepower?
A: 1 horsepower = 745.7 watts.

Q3: Can I use this for electric motors?
A: Yes, this calculation works for any rotating machinery where torque and RPM are known.

Q4: What if my torque is in Newton-meters?
A: Convert to pound-feet first (1 Nm = 0.73756 lb-ft) or modify the formula by removing the conversion factor.

Q5: Why does power increase with RPM at constant torque?
A: Power is the rate of doing work, so higher RPM means more work is being done per minute even with the same torque.