Convert UK gallons per day to US gallons per second
Convert UK gallons per day (gpd) to US gallons per second (gal/s) instantly and accurately.
Conversion Formula
gal/s = gpd × 1.389988340e-5
About UK gallons per day
The UK gallon per day (gpd) equals 4.54609×10⁻³/86400 ≈ 5.261×10⁻⁸ m³/s, used in British per-capita water-consumption statistics and pre-metric water-authority regulation. Historic UK Water Acts set minimum supply standards in UK gal/d per household; older UK borehole pump test reports quote sustained yield in UK gal/d. 1 UK gpd ≈ 5.261×10⁻⁸ m³/s.
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.
Quick Reference Table
| UK gallons per day (gpd) | US gallons per second (gal/s) |
|---|---|
| 1 gpd | 1.39 × 10-5 gal/s |
| 2 gpd | 2.78 × 10-5 gal/s |
| 5 gpd | 6.95 × 10-5 gal/s |
| 10 gpd | 0.000138999 gal/s |
| 25 gpd | 0.000347497 gal/s |
| 50 gpd | 0.000694994 gal/s |
| 100 gpd | 0.00138999 gal/s |