Feet Per Minute (FPM) to RPM Conversion Calculator

This tool converts speed in Feet Per Minute (ft/min) to Revolutions Per Minute (RPM).

In various fields such as engineering, converting linear speed (like feet per minute) to rotational speed (revolutions per minute or RPM) is a common task. This calculator makes it easy.



  • Either the Diameter or the Circumference of the circle
  • Speed in feet per minute

The tool will calculate the RPM

🔁 RPM to feet per minute


To convert from meters per minute (m/min) to revolutions per minute (RPM), you need to know the circumference of the circle the point is traveling around. The circumference ( C ) of a circle is calculated by:

C = π d


  • π = 3.14159,
  • d is the diameter of the circle.

The conversion formula from meters per minute to RPM is:

RPM = Feet per minute / C

Understanding Rotational Speed

In various fields such as engineering, manufacturing, and automotive industries, converting linear speed (like meters per minute) to rotational speed (revolutions per minute or RPM) is a common task. This conversion is essential for designing and maintaining machinery, optimizing performance, and ensuring safety. This article provides a calculator to convert meters per minute to RPM.

Rotational Speed refers to the number of complete turns a rotating object makes per unit of time. It is commonly measured in revolutions per minute (RPM), which indicates how many full rotations occur in one minute. This measurement is critical in understanding the dynamics of rotating machinery, such as engines, turbines, and wheels.

Linear Speed is the distance traveled by an object moving along a path in a given period of time, typically measured in meters per minute (m/min). When dealing with rotating objects, converting linear speed to RPM helps in understanding the relationship between the motion of a point on the rotating object and the overall rotational speed.

Practical Examples

Consider a wheel with a diameter of 1 foot. If a point on the edge of this wheel moves at a speed of 50 feet per minute, you can convert this to RPM using the calculator. The answer is 15.92 revolutions per minute.

A wheel with a circumference of 0.5 feet moving at a speed of 50 feet per minute gives 31.83 RPM.

These numbers make sense if you think about it intuitively: a smaller wheel moving at the same speed (FPM) as a larger wheel has to revolve faster.

Applications of Feet per Minute to RPM Conversion

  1. Manufacturing: In industries where machinery parts are rotating, knowing the RPM is essential for maintaining equipment, ensuring precision, and optimizing speed for various processes.
  2. Automotive: For vehicles, understanding the RPM of wheels or engine components relative to their linear speed helps in tuning performance and monitoring the mechanical health of the system.
  3. Engineering Design: When designing rotating systems like gears, turbines, and conveyor belts, converting linear speeds to RPM helps in specifying and matching components for desired operational speeds.
  4. Aerospace: Aircraft engines and rotors require precise RPM control for safe and efficient operation. Understanding the relationship between linear and rotational speeds is crucial in this context.


Converting feet per minute to RPM is a fundamental calculation in many technical fields, from manufacturing to automotive and aerospace. Using the provided formula and calculator, you can accurately perform these conversions and apply them to a wide range of practical scenarios.

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