Convert Cubic metres per second to UK gallons per minute
Convert Cubic metres per second (m³/s) to UK gallons per minute (gpm) instantly and accurately.
Conversion Formula
gpm = m³/s × 13198.1549
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 UK gallons per minute
The UK (imperial) gallon per minute (gpm) equals 4.54609×10⁻³/60 ≈ 7.577×10⁻⁵ m³/s, historically used in British plumbing design, pump curves, and water-treatment plant sizing. Pre-metric UK water-industry capacity tables and pump manufacturers quoted flows in UK gal/min; legacy British Standard BS EN pump curves often show both units. 1 UK gpm ≈ 7.577×10⁻⁵ m³/s ≈ 4.546 L/min.
Quick Reference Table
| Cubic metres per second (m³/s) | UK gallons per minute (gpm) |
|---|---|
| 1 m³/s | 13198.2 gpm |
| 2 m³/s | 26396.3 gpm |
| 5 m³/s | 65990.8 gpm |
| 10 m³/s | 131982 gpm |
| 25 m³/s | 329954 gpm |
| 50 m³/s | 659908 gpm |
| 100 m³/s | 1319820 gpm |