Convert UK gallons per second to US gallons per day
Convert UK gallons per second (gal/s) to US gallons per day (gpd) instantly and accurately.
Conversion Formula
gpd = gal/s × 103762.0736
About UK gallons per second
The UK (imperial) gallon per second (gal/s) equals 4.54609×10⁻³ m³/s, about 20% larger than the US gallon per second. It appears in pre-metric British fire-fighting standards, large pump test certificates, and naval engineering calculations. A UK fire engine pump rated 1 000 UK gal/min delivers ≈16.67 UK gal/s. 1 UK gal/s = 4.54609×10⁻³ m³/s ≈ 1.201 US gal/s.
About US gallons per day
The US gallon per day (gpd) equals 3.785411784×10⁻³/86400 ≈ 4.381×10⁻⁸ m³/s, the standard unit in US water-utility regulation and residential water-well pump sizing. The US national average residential water use is about 80-100 gpd per person; a reverse-osmosis membrane module is rated in gpd (50-100 gpd for domestic units). 1 US gpd ≈ 4.381×10⁻⁸ m³/s.
Quick Reference Table
| UK gallons per second (gal/s) | US gallons per day (gpd) |
|---|---|
| 1 gal/s | 103762 gpd |
| 2 gal/s | 207524 gpd |
| 5 gal/s | 518810 gpd |
| 10 gal/s | 1037620 gpd |
| 25 gal/s | 2594050 gpd |
| 50 gal/s | 5188100 gpd |
| 100 gal/s | 10376200 gpd |