On-line Calculators
Pump Calculator

This calculator allows you to compute either the Horsepower, Gallons per Minute (GPM) or Pounds per Square Inch of pressure (PSI) from a hydraulic pump from the other two parameters, given a specified pump efficiency.


  • Select the value you which to calculate (Horsepower, GPM or PSI) by clicking on the radio button to its left.
  • Enter values in the fields to the right of each of the other two parameters, as well as a value for the Pump Efficiency.
  • Click on the "Calculate" button.

The answer will appear. To calculate a new value, simply change the parameter(s) you wish to vary to their new value(s), and click on "Calculate" once again.

Important Disclaimer: This calculator is provided for general information and illustration purposes only; the results are to be used only as estimates and are not intended as definitive advice or as a resource applicable to any specific circumstance and should not be relied upon or used as such. PHI Inc. cannot guarantee that you will achieve proper results without verifying your measurements and assumptions. For specific advice regarding your project, you should engage the services of an associate at PHI Inc.

For more information or technical assistance, call us at 1 (800) 447-4409, or send e-mail to sales@phionline.com.

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