Enter the pump RPM and the pump displacement (in^3/revolution) into the RPM to Flow Rate Calculator. The calculator will evaluate the RPM to Flow Rate.
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RPM to Flow Rate Formula
The following two example problems outline the steps and information needed to calculate the RPM to Flow Rate.
FR = RPM * D / 231
- Where FR is the RPM to Flow Rate (GPM)
- RPM is the pump RPM
- D is the pump displacement (in^3/revolution)
How to Calculate RPM to Flow Rate?
The following example problems outline how to calculate RPM to Flow Rate.
Example Problem #1:
- First, determine the pump RPM.
- The pump RPM is given as: 400.
- Next, determine the pump displacement (in^3/revolution).
- The pump displacement (in^3/revolution) is provided as: 2.5.
- Finally, calculate the RPM to Flow Rate using the equation above:
FR = RPM * D / 231
The values provided above are inserted into the equation below and computed.
FR = 400 * 2.5 / 231 = 4.239 (GPM)
Example Problem #2:
For this problem, the variables required are provided below:
pump RPM = 600
pump displacement (in^3/revolution) = 3
Test your knowledge using the equation and check your answer with the calculator..
FR = RPM * D / 231 = ?
