Low Pressure, 0.5 inch pipe
Water Pressure (PSI): 10 PSI; Pipe Diameter (Inches): 0.5 inch
Estimated Flow Rate (GPM): 7.90569415 GPM
PSI to GPM Calculator
Construction0.0(0)
Calculates the approximate flow rate of water in Gallons Per Minute (GPM) based on the Pressure (PSI) reading from a pressure gauge. This calculation assumes a standard water pipe size and doesn't account for friction loss or other factors.
How To Use
How to use this calculator
Start with your values, or try a preset.
Step 1
Enter Water Pressure (PSI) and Pipe Diameter (Inches) in the units shown.
Step 2
Read Estimated Flow Rate (GPM) in the results panel. Results update as you change the inputs.
Step 3
Choose a preset to load an example, then adjust the values for your situation.
Worked Examples
Example calculations
See the inputs and their calculated results.
Medium Pressure, 0.5 inch pipe
Water Pressure (PSI): 30 PSI; Pipe Diameter (Inches): 0.5 inch
Estimated Flow Rate (GPM): 13.69306394 GPM
High Pressure, 0.75 inch pipe
Water Pressure (PSI): 60 PSI; Pipe Diameter (Inches): 0.75 inch
Estimated Flow Rate (GPM): 34.85685012 GPM
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