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Flow Rate (GPM) Calculator

Result

Flow Rate (GPM)26.42 GPM
Flow Rate (LPM)100 L/min
Flow Rate (m³/hr)6 m³/hr
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Flow Rate (GPM) Calculator — free online calculator.

Formula

FlowLPM = Volume / (Time/60); GPM = LPM × 0.264172; m³/hr = LPM × 60 / 1000
  • Flow Rate (GPM) Calculator calculates its result from Volume, Time, Lpm. It uses the formula FlowLPM = Volume / (Time/60); GPM = LPM × 0.264172; m³/hr = LPM × 60 / 1000. Change any input to recalculate the result instantly.
  • The main inputs are Volume Collected, Time Taken. Enter them in the units and format shown in the calculator.
  • Keep measurements and project assumptions consistent before comparing or combining values.
  • Changing any input above recalculates the result with the same calculation engine used by this page.

Example: Flow Rate (GPM)

Inputs
  • Volume Collected: 100
  • Time Taken: 60

Using Volume = 2, Time = 3, Lpm = 4, the calculated result is 0.24.

Sample result: Calculating…

Frequently asked questions

What does the Flow Rate (GPM) calculate?

Flow Rate (GPM) Calculator — free online calculator.

Which values should I enter?

Enter Volume Collected, Time Taken using the units and format shown beside each field.

What formula does this calculator use?

The calculator uses the following relationship: FlowLPM = Volume / (Time/60); GPM = LPM × 0.264172; m³/hr = LPM × 60 / 1000.

Why might my result differ from another source?

Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.

Does the result update automatically?

Yes. Changing an input updates the result using the same calculation engine shown on this page.

Page information

Updated: October 10, 2026