Volumetric flow
Convert litre per second (L/s) to cubic metre per hour (m³/h). 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/s = 3.6 m³/h
To convert litre per second to cubic metre per hour, multiply the L/s value by 3.6. To go the other way, divide by 3.6 (or multiply by 0.2777778).
| L/s | m³/h |
|---|---|
| 1 | 3.6 |
| 2 | 7.2 |
| 5 | 18 |
| 10 | 36 |
| 25 | 90 |
| 50 | 180 |
| 100 | 360 |
| 250 | 900 |
| 500 | 1800 |
| 1000 | 3600 |
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 1000 L/s is 3600 m³/h.
Multiply the value in L/s by 3.6 to get m³/h. For example, 10 L/s = 36 m³/h.
1 L/s equals 3.6 m³/h.
Pump and line duties are quoted in m³/h or US gpm; instrument and utility flows often in L/min or ft³/s.