1. What is the kW to Torque Formula?

The kW to Torque formula calculates the torque produced by an engine or motor based on its power output in kilowatts and rotational speed in RPM (revolutions per minute). This is essential for understanding mechanical performance in various applications.

2. How Does the Calculator Work?

The calculator uses the torque formula:

Where:

• \( kW \) — Power in kilowatts
• \( RPM \) — Rotational speed in revolutions per minute
• 9549.3 — Conversion constant (derived from 60,000/(2π))

Explanation: The formula converts power (energy per unit time) to torque (rotational force) considering the speed of rotation.

3. Importance of Torque Calculation

Details: Torque is a crucial measurement in mechanical engineering, automotive design, and industrial applications. It determines the rotational force available at a shaft and affects acceleration, towing capacity, and overall machine performance.

4. Using the Calculator

Tips: Enter power in kilowatts and rotational speed in RPM. Both values must be positive numbers. The calculator will compute the torque in Newton-meters (Nm).

5. Frequently Asked Questions (FAQ)

Q1: Why is 9549.3 used in the formula?
A: This constant comes from unit conversion: (60,000)/(2π) = 9549.3, which converts kW to Nm and minutes to seconds.

Q2: What's the difference between torque and power?
A: Power is the rate of doing work, while torque is the rotational force. Power = Torque × Angular Velocity.

Q3: How does RPM affect torque?
A: For a given power output, torque decreases as RPM increases, and vice versa.

Q4: Can I use this for electric motors?
A: Yes, this formula works for any rotating machine - internal combustion engines, electric motors, turbines, etc.

Q5: What are typical torque values?
A: Small electric motors might produce 1-10 Nm, car engines 100-500 Nm, while large industrial motors can produce thousands of Nm.