Hydraulic Pump Flow Calculator

Find the output flow of a hydraulic pump with this
Hydraulic Pump Flow Calculator.

Pump Displacement (Cubic Inches):

Fill in pump input rpm and pump displacement to determine pump
output flow.

How do you calculate hydraulic pump flow?

To find the output flow of a hydraulic pump, use this pump flow formula:
Flow (GPM) = (RPM x Disp) / 231

RPM = Rotations Per Minute

Disp = Pump Displacement in Cubic Inches

GPM = Gallons Per Minute

Example: The output flow of a pump spinning at a rate of 2000rpm
with a displacement of 2.75 cubic inches:

Flow (GPM) = (2000 x 2.75) / 231

Calculated out this gives an output flow of 23.81GPM
(rounded to the nearest 100th)

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