RPM To Speed Calculator

Speed Formula:

\[ S = \frac{RPM \times \pi \times D}{60 \times \frac{1000}{3600}} \]

Speed (km/h):

Unit Converter ▲

Unit Converter ▼

From:	To:

1. What is an RPM To Speed Calculator?

Definition: This calculator converts rotational speed (RPM) to linear speed (km/h) based on the diameter of the rotating object.

Purpose: It helps engineers, mechanics, and hobbyists determine the linear speed of wheels, gears, or any rotating components.

2. How Does the Calculator Work?

The calculator uses the formula:

\[ S = \frac{RPM \times \pi \times D}{60 \times \frac{1000}{3600}} \]

Where:

\( S \) — Speed (km/h)
\( RPM \) — Revolutions per minute
\( D \) — Diameter of the rotating object (meters)
\( \pi \) — Pi (approximately 3.14159)

Explanation: The formula converts rotational motion to linear speed by multiplying circumference (π×D) by RPM, then adjusting units to km/h.

3. Importance of RPM to Speed Conversion

Details: This calculation is essential for vehicle speed calculations, conveyor belt systems, and any application where rotational motion translates to linear movement.

4. Using the Calculator

Tips: Enter the RPM value and the diameter in meters. Both values must be greater than 0.

5. Frequently Asked Questions (FAQ)

Q1: Why is diameter important in this calculation?
A: The diameter determines the circumference, which directly affects how much distance is covered per revolution.

Q2: Can I use this for wheel speed calculations?
A: Yes, this is commonly used to calculate vehicle speed based on wheel RPM and tire diameter.

Q3: What units does this calculator use?
A: RPM is in revolutions per minute, diameter in meters, and the result is in kilometers per hour.

Q4: How accurate is this calculation?
A: It provides theoretical speed. Actual speed may vary due to factors like slippage or deformation.

Q5: Can I calculate RPM from speed with this formula?
A: Yes, you can rearrange the formula to solve for RPM if you know the speed and diameter.