Volumetric flow
Convert US gallon per minute (US gpm) to cubic foot per minute (ft³/min). Volumetric flow rate is the volume of fluid passing a point per unit time — the basis for line sizing, pump duty, and instrument ranging.
1 US gpm = 0.1336806 ft³/min
To convert US gallon per minute to cubic foot per minute, multiply the US gpm value by 0.1336806. To go the other way, divide by 0.1336806 (or multiply by 7.480519).
| US gpm | ft³/min |
|---|---|
| 1 | 0.1336806 |
| 2 | 0.2673611 |
| 5 | 0.6684028 |
| 10 | 1.336806 |
| 25 | 3.342014 |
| 50 | 6.684028 |
| 100 | 13.36806 |
| 250 | 33.42014 |
| 500 | 66.84028 |
| 1000 | 133.6806 |
Pump and line duties are quoted in m³/h or US gpm; instrument and utility flows often in L/min or ft³/s.
Volumetric flow depends on temperature and pressure for gases — convert on the same basis (actual vs standard) to avoid errors.
Worked example. A flow rate of 15850.32 US gpm is 2118.88 ft³/min.
Multiply the value in US gpm by 0.1336806 to get ft³/min. For example, 10 US gpm = 1.336806 ft³/min.
1 US gpm equals 0.1336806 ft³/min.
Pump and line duties are quoted in m³/h or US gpm; instrument and utility flows often in L/min or ft³/s.