Convert Cubic metres per second to US gallons per minute
Convert Cubic metres per second (m³/s) to US gallons per minute (gpm) instantly and accurately.
Conversion Formula
gpm = m³/s × 15850.32314
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.
About US gallons per minute
The US gallon per minute (gpm) equals 3.785411784×10⁻³/60 ≈ 6.309×10⁻⁵ m³/s, the dominant volumetric flow unit in US plumbing, HVAC, and water-treatment industries. EPA showerhead standards are set at 2.5 gpm; residential water meters size at 3/4"-1" for 5-20 gpm; municipal water-distribution design uses hundreds to thousands of gpm. 1 gpm ≈ 6.309×10⁻⁵ m³/s = 3.785 L/min.
Quick Reference Table
| Cubic metres per second (m³/s) | US gallons per minute (gpm) |
|---|---|
| 1 m³/s | 15850.3 gpm |
| 2 m³/s | 31700.6 gpm |
| 5 m³/s | 79251.6 gpm |
| 10 m³/s | 158503 gpm |
| 25 m³/s | 396258 gpm |
| 50 m³/s | 792516 gpm |
| 100 m³/s | 1585030 gpm |