Convert US gallons per second to UK gallons per minute
Convert US gallons per second (gal/s) to UK gallons per minute (gpm) instantly and accurately.
Conversion Formula
gpm = gal/s × 49.96045108
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 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
| US gallons per second (gal/s) | UK gallons per minute (gpm) |
|---|---|
| 1 gal/s | 49.9605 gpm |
| 2 gal/s | 99.9209 gpm |
| 5 gal/s | 249.802 gpm |
| 10 gal/s | 499.605 gpm |
| 25 gal/s | 1249.01 gpm |
| 50 gal/s | 2498.02 gpm |
| 100 gal/s | 4996.05 gpm |