Volumetric flow
Convert US gallon per minute (US gpm) to litre per second (L/s). 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 = 0.0630902 L/s
To convert US gallon per minute to litre per second, multiply the US gpm value by 0.0630902. To go the other way, divide by 0.0630902 (or multiply by 15.85032).
| US gpm | L/s |
|---|---|
| 1 | 0.0630902 |
| 2 | 0.1261804 |
| 5 | 0.315451 |
| 10 | 0.630902 |
| 25 | 1.577255 |
| 50 | 3.15451 |
| 100 | 6.30902 |
| 250 | 15.77255 |
| 500 | 31.5451 |
| 1000 | 63.0902 |
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 1000 L/s.
Multiply the value in US gpm by 0.0630902 to get L/s. For example, 10 US gpm = 0.630902 L/s.
1 US gpm equals 0.0630902 L/s.
Pump and line duties are quoted in m³/h or US gpm; instrument and utility flows often in L/min or ft³/s.