Gallons Per Minute Calculator (GPM)

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Calculates the water flow rate in gallons per minute (GPM).

How To Use

How to use this calculator

Start with your values, or try a preset.

Step 1

Enter Volume (Gallons) and Time (Seconds) in the units shown.

Step 2

Read 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

See the inputs and their calculated results.

Volume (Gallons): 10 gallons; Time (Seconds): 60 seconds

Flow Rate (GPM): 10 gallons/minute

Volume (Gallons): 50 gallons; Time (Seconds): 120 seconds

Flow Rate (GPM): 25 gallons/minute

Volume (Gallons): 100 gallons; Time (Seconds): 60 seconds

Flow Rate (GPM): 100 gallons/minute

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