Convert US gallons per second to Cubic metres per hour
Convert US gallons per second (gal/s) to Cubic metres per hour (m³/h) instantly and accurately.
Conversion Formula
m³/h = gal/s × 13.62748242
About US gallons per second
The US gallon per second (gal/s) equals 3.785411784×10⁻³ m³/s, used for very large pump discharge rates and fire-suppression deluge systems. A large centrifugal fire pump rated 1 500 US gal/min delivers exactly 25 US gal/s; industrial cooling-tower makeup lines are sized in gal/s at peak demand. 1 US gal/s = 3.785411784×10⁻³ m³/s = 60 US gal/min ≈ 227.1 L/min.
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.
Quick Reference Table
| US gallons per second (gal/s) | Cubic metres per hour (m³/h) |
|---|---|
| 1 gal/s | 13.6275 m³/h |
| 2 gal/s | 27.255 m³/h |
| 5 gal/s | 68.1374 m³/h |
| 10 gal/s | 136.275 m³/h |
| 25 gal/s | 340.687 m³/h |
| 50 gal/s | 681.374 m³/h |
| 100 gal/s | 1362.75 m³/h |