Convert Cubic metres per hour to Litres per second
Convert Cubic metres per hour (m³/h) to Litres per second (L/s) instantly and accurately.
Conversion Formula
L/s = m³/h × 0.2777777778
About Cubic metres per hour
The cubic metre per hour (m³/h) equals 1/3600 m³/s ≈ 2.778×10⁻⁴ m³/s, the dominant volumetric flow unit in European process engineering, HVAC, and water treatment. Pump datasheet curves, heat-exchanger sizing software, and wastewater-treatment design all use m³/h as the standard. A domestic water pump runs at 3-8 m³/h; a municipal WWTP inlet pump handles 500-5 000 m³/h. 1 m³/h ≈ 2.778×10⁻⁴ m³/s = 1 000 L/h.
About Litres per second
The litre per second (L/s) equals 10⁻³ m³/s, the standard unit for municipal water-supply engineering, fire-fighting flows, and HVAC system air handling. A fire hydrant delivers 15-30 L/s; a household mains water connection is typically 0.1-0.5 L/s; a large building HVAC chilled-water loop circulates 50-200 L/s. 1 L/s = 10⁻³ m³/s = 3.6 m³/h ≈ 15.85 US gal/min.
Quick Reference Table
| Cubic metres per hour (m³/h) | Litres per second (L/s) |
|---|---|
| 1 m³/h | 0.277778 L/s |
| 2 m³/h | 0.555556 L/s |
| 5 m³/h | 1.38889 L/s |
| 10 m³/h | 2.77778 L/s |
| 25 m³/h | 6.94444 L/s |
| 50 m³/h | 13.8889 L/s |
| 100 m³/h | 27.7778 L/s |