Convert US gallons per day to US quarts per hour
Convert US gallons per day (gpd) to US quarts per hour (qt/h) instantly and accurately.
Conversion Formula
qt/h = gpd × 0.1666666667
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 quarts per hour
The US quart per hour (qt/h) equals 3.785411784×10⁻³/4/3600 ≈ 2.629×10⁻⁷ m³/s, used in US agricultural irrigation drippers (emitters rated in qt/h) and hobby aquaculture systems. A drip emitter rated 1 qt/h ≈ 0.946 L/h is a common size for garden irrigation in the US market. 1 US qt/h ≈ 2.629×10⁻⁷ m³/s.
Quick Reference Table
| US gallons per day (gpd) | US quarts per hour (qt/h) |
|---|---|
| 1 gpd | 0.166667 qt/h |
| 2 gpd | 0.333333 qt/h |
| 5 gpd | 0.833333 qt/h |
| 10 gpd | 1.66667 qt/h |
| 25 gpd | 4.16667 qt/h |
| 50 gpd | 8.33333 qt/h |
| 100 gpd | 16.6667 qt/h |