Convert US gallons per day to US gallons per second
Convert US gallons per day (gpd) to US gallons per second (gal/s) instantly and accurately.
Conversion Formula
gal/s = gpd × 1.157407407e-5
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.
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
| US gallons per day (gpd) | US gallons per second (gal/s) |
|---|---|
| 1 gpd | 1.157 × 10-5 gal/s |
| 2 gpd | 2.315 × 10-5 gal/s |
| 5 gpd | 5.787 × 10-5 gal/s |
| 10 gpd | 0.000115741 gal/s |
| 25 gpd | 0.000289352 gal/s |
| 50 gpd | 0.000578704 gal/s |
| 100 gpd | 0.00115741 gal/s |