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`D = 2*sqrt(V/(L*pi))`

Enter a value for all fields

The **Pump Cylinder Diameter **calculator computes the cylinder diameter (D) based on the stroke length (L) and volume displacement of one stroke (V).

**INSTRUCTIONS**: Choose units and enter the following:

- (
**L**) Stroke Length of Pump Cylinder - (
**V**) Volume Displacement of One Stroke of the cylinder of the pump

**Pump Cylinder Diameter (D): ** The calculator returns the diameter in inches. However this can be automatically converted to compatible units via the pull-down menu.

The formula for the displacement volume of a cylinder in a pump is:

V = π•(D/2)²•L

where:

- V is the volume displaced in one stroke of the pump
- D is the inner diameter of the pump cylinder
- L is the pump cylinder stroke length

This calculator has the above formula solved for the pump cylinder diameter:

`D = 2•sqrt(V/(L•π))`