Volumetric flow
Convert cubic metre per hour (m³/h) 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 m³/h = 0.2777778 L/s
To convert cubic metre per hour to litre per second, multiply the m³/h value by 0.2777778. To go the other way, divide by 0.2777778 (or multiply by 3.6).
| m³/h | L/s |
|---|---|
| 1 | 0.2777778 |
| 2 | 0.5555556 |
| 5 | 1.388889 |
| 10 | 2.777778 |
| 25 | 6.944444 |
| 50 | 13.88889 |
| 100 | 27.77778 |
| 250 | 69.44444 |
| 500 | 138.8889 |
| 1000 | 277.7778 |
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 3600 m³/h is 1000 L/s.
Multiply the value in m³/h by 0.2777778 to get L/s. For example, 10 m³/h = 2.777778 L/s.
1 m³/h equals 0.2777778 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.