Convert US gallons per day to Cubic inches per hour
Convert US gallons per day (gpd) to Cubic inches per hour (in³/h) instantly and accurately.
Conversion Formula
in³/h = gpd × 9.625
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 Cubic inches per hour
The cubic inch per hour (in³/h) equals 1.6387064×10⁻⁵/3600 ≈ 4.552×10⁻⁹ m³/s, appearing in US oilfield plunger-pump capacity datasheets and slow hydraulic-actuator specifications. It is also used in US ASTM leak-test standards where maximum allowable leakage past a valve seal is expressed in in³/h at rated pressure. 1 in³/h ≈ 4.552×10⁻⁹ m³/s.
Quick Reference Table
| US gallons per day (gpd) | Cubic inches per hour (in³/h) |
|---|---|
| 1 gpd | 9.625 in³/h |
| 2 gpd | 19.25 in³/h |
| 5 gpd | 48.125 in³/h |
| 10 gpd | 96.25 in³/h |
| 25 gpd | 240.625 in³/h |
| 50 gpd | 481.25 in³/h |
| 100 gpd | 962.5 in³/h |