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Flow Rate in Gallons per Minute Calculator — result sheet
Calculate a volumetric flow rate from volume and elapsed time and report litres per minute.
Inputs used
Results
Visual chart
Breakdown
Calculation steps
Returned data table
Formula and methodology
Formula: Flow rate = volume/time; litres per minute = gallons per minute×3.785411784.
The input interval is kept in minutes so the resulting rate is easy to compare with pump or fixture labels.
This result follows the calculator's declared inputs, precision, validation boundaries, and model limits.
Input contract
- Volume — US gal; minimum 0; maximum 1000000000
- Elapsed time — min; minimum 1.0E-6; maximum 1000000
Worked example
| Input | Value |
|---|---|
| Volume | 100 |
| Elapsed time | 20 |
Flow rate = 5 US GPM, or approximately18.927 L/min.
Assumptions and limits
- Volume is nonnegative US gallons and time is positive minutes.
- The flow is treated as an average constant rate over the interval.
- Pressure, pipe friction, viscosity, pump curves, and local plumbing rules are not modeled.
Calculator note
Source and methodology
Use the official WorldCalculate methodology policy for the source, formula, precision, and boundary standards behind this calculator.
Planning estimate, not financial, medical, legal, or professional advice. © WorldCalculate — reuse with attribution. Built and curated by Hassan ALRowaie.
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