Volumetric flow
Convert litre per minute (L/min) to US gallon per minute (US gpm). 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 L/min = 0.2641721 US gpm
To convert litre per minute to US gallon per minute, multiply the L/min value by 0.2641721. To go the other way, divide by 0.2641721 (or multiply by 3.785412).
| L/min | US gpm |
|---|---|
| 1 | 0.2641721 |
| 2 | 0.5283441 |
| 5 | 1.32086 |
| 10 | 2.641721 |
| 25 | 6.604301 |
| 50 | 13.2086 |
| 100 | 26.41721 |
| 250 | 66.04301 |
| 500 | 132.086 |
| 1000 | 264.1721 |
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 60000 L/min is 15850.32 US gpm.
Multiply the value in L/min by 0.2641721 to get US gpm. For example, 10 L/min = 2.641721 US gpm.
1 L/min equals 0.2641721 US gpm.
Pump and line duties are quoted in m³/h or US gpm; instrument and utility flows often in L/min or ft³/s.