Volumetric flow
Convert cubic foot per minute (ft³/min) to litre per minute (L/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 ft³/min = 28.31685 L/min
To convert cubic foot per minute to litre per minute, multiply the ft³/min value by 28.31685. To go the other way, divide by 28.31685 (or multiply by 0.03531467).
| ft³/min | L/min |
|---|---|
| 1 | 28.31685 |
| 2 | 56.63369 |
| 5 | 141.5842 |
| 10 | 283.1685 |
| 25 | 707.9212 |
| 50 | 1415.842 |
| 100 | 2831.685 |
| 250 | 7079.212 |
| 500 | 14158.42 |
| 1000 | 28316.85 |
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 2118.88 ft³/min is 60000 L/min.
Multiply the value in ft³/min by 28.31685 to get L/min. For example, 10 ft³/min = 283.1685 L/min.
1 ft³/min equals 28.31685 L/min.
Pump and line duties are quoted in m³/h or US gpm; instrument and utility flows often in L/min or ft³/s.