Convert US gallons per second to Cubic metres per second
Convert US gallons per second (gal/s) to Cubic metres per second (m³/s) instantly and accurately.
Conversion Formula
m³/s = gal/s × 0.003785411784
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 second
The cubic metre per second (m³/s) is the SI coherent unit of volumetric flow rate. It is used for large river discharges, turbine inlet flows, and major pipeline capacities. The Amazon River at its mouth averages ≈200 000 m³/s; a large hydroelectric turbine passes 400-800 m³/s; a major municipal water-main carries 5-20 m³/s. 1 m³/s = 1 000 L/s ≈ 15 850 US gal/min = 35.315 ft³/s.
Quick Reference Table
| US gallons per second (gal/s) | Cubic metres per second (m³/s) |
|---|---|
| 1 gal/s | 0.00378541 m³/s |
| 2 gal/s | 0.00757082 m³/s |
| 5 gal/s | 0.0189271 m³/s |
| 10 gal/s | 0.0378541 m³/s |
| 25 gal/s | 0.0946353 m³/s |
| 50 gal/s | 0.189271 m³/s |
| 100 gal/s | 0.378541 m³/s |