Convert Cubic feet per second to UK gallons per minute
Convert Cubic feet per second (ft³/s) to UK gallons per minute (gpm) instantly and accurately.
Conversion Formula
gpm = ft³/s × 373.7301275
About Cubic feet per second
The cubic foot per second (ft³/s or cfs) equals 0.028316846592 m³/s, the primary unit for measuring river discharge and open-channel flow in the United States. The US Geological Survey publishes all streamflow data in cfs; irrigation water rights, flood-control gates, and dam spillway capacities are specified in cfs. The Colorado River at full natural flow is ≈22 000 cfs. 1 cfs = 0.028316846592 m³/s ≈ 28.317 L/s ≈ 448.8 US gpm.
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 feet per second (ft³/s) | UK gallons per minute (gpm) |
|---|---|
| 1 ft³/s | 373.73 gpm |
| 2 ft³/s | 747.46 gpm |
| 5 ft³/s | 1868.65 gpm |
| 10 ft³/s | 3737.3 gpm |
| 25 ft³/s | 9343.25 gpm |
| 50 ft³/s | 18686.5 gpm |
| 100 ft³/s | 37373 gpm |