Enter the stroke length (mm) and the RPM (rev/min) into the calculator to determine the mean piston speed.

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## Piston Speed Formula

The following formula is used to calculate the mean piston speed.

MPS = 2 * S / 1000* RPM / 60

- Where MPS is the mean piston speed (m/s)
- S is the stroke length (mm)
- RPM is the rotations per minute of the engine.

## Piston Speed Definition

A piston speed, also commonly known as the mean piston speed, is the velocity of a moving piston inside a combustion engine.

## Piston Speed Example

How to calculate a piston speed?

**First, determine the stroke length.**Measure the total stroke length of the piston.

**Next, determine the RPM.**Measure or calculate the rotations per minute of the engine.

**Finally, calculate the piston speed.**Calculate the velocity of the piston using the formula above.

## FAQ

**What is a piston?**

A piston is an actuating cylinder in an internal combustion engine that is driven by the force of combustion and transfers that movement to the wheels of a car.

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