1. What is the Torque Formula?

The torque formula calculates the rotational force (torque) produced by a motor or engine based on its power output and rotational speed (RPM). It provides an essential measurement for mechanical and electrical engineering applications.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( T \) — Torque (Nm)
• \( P \) — Power (W)
• \( RPM \) — Rotations per minute (rev/min)
• \( \pi \) — Mathematical constant pi (approximately 3.1416)
• 60 — Conversion factor from minutes to seconds

Explanation: The formula converts power and rotational speed into torque, accounting for the relationship between rotational work and force.

3. Importance of Torque Calculation

Details: Accurate torque calculation is crucial for designing mechanical systems, selecting appropriate motors, determining load capacities, and ensuring proper operation of rotating machinery.

4. Using the Calculator

Tips: Enter power in watts (W), RPM in revolutions per minute. All values must be valid (power > 0, RPM > 0).

5. Frequently Asked Questions (FAQ)

Q1: What units should I use for the inputs?
A: Power should be in watts (W) and RPM in revolutions per minute (rev/min) for accurate results in Newton-meters (Nm).

Q2: Can I use different power units?
A: Yes, but you'll need to convert to watts first. 1 horsepower = 745.7 watts, 1 kilowatt = 1000 watts.

Q3: Why is there a 60 in the numerator?
A: The 60 converts minutes to seconds since power is measured in watts (joules per second) while RPM is in revolutions per minute.

Q4: What is a typical torque range for electric motors?
A: Torque varies greatly by motor size and type. Small motors might produce 0.1-1 Nm, while industrial motors can produce hundreds of Nm.

Q5: How does torque relate to mechanical power?
A: Torque and rotational speed together determine mechanical power output. Higher torque at the same RPM means more power, and vice versa.