Converting RPM To Watts Calculator

Power Equation:

\[ \text{Power (W)} = \text{Torque (Nm)} \times \text{RPM (rev/min)} \times \frac{2\pi}{60} \]

Power:

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is the RPM to Watts Conversion?

The RPM to Watts conversion calculates mechanical power from rotational speed (RPM) and torque. It's essential for understanding the power output of engines, motors, and other rotating systems.

2. How Does the Calculator Work?

The calculator uses the power equation:

\[ \text{Power (W)} = \text{Torque (Nm)} \times \text{RPM (rev/min)} \times \frac{2\pi}{60} \]

Where:

\( Torque \) — Rotational force in Newton-meters (Nm)
\( RPM \) — Rotational speed in revolutions per minute
\( 2\pi \) — Conversion factor from revolutions to radians
\( 60 \) — Conversion factor from minutes to seconds

Explanation: The equation converts rotational motion parameters to linear power by accounting for the angular velocity in radians per second.

3. Importance of Power Calculation

Details: Accurate power calculation is crucial for sizing motors, determining energy requirements, and evaluating mechanical system performance.

4. Using the Calculator

Tips: Enter torque in Nm and RPM in rev/min. Both values must be positive numbers. The result is power in watts (W).

5. Frequently Asked Questions (FAQ)

Q1: How do I convert the result to horsepower?
A: Divide the watt value by 745.7 to get horsepower (hp).

Q2: What's the difference between input and output power?
A: This calculates mechanical output power. Input electrical power would be higher due to efficiency losses.

Q3: Can I use this for electric motors?
A: Yes, this calculates the mechanical power output of any rotating system.

Q4: What if I have lb-ft instead of Nm?
A: Convert lb-ft to Nm by multiplying by 1.3558 before using the calculator.

Q5: Why is the result in watts?
A: Watts are the SI unit of power. 1 watt = 1 joule/second = 1 Nm/s.