Convert Cubic inches per hour to US gallons per day
Convert Cubic inches per hour (in³/h) to US gallons per day (gpd) instantly and accurately.
Conversion Formula
gpd = in³/h × 0.1038961039
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.
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
| Cubic inches per hour (in³/h) | US gallons per day (gpd) |
|---|---|
| 1 in³/h | 0.103896 gpd |
| 2 in³/h | 0.207792 gpd |
| 5 in³/h | 0.519481 gpd |
| 10 in³/h | 1.03896 gpd |
| 25 in³/h | 2.5974 gpd |
| 50 in³/h | 5.19481 gpd |
| 100 in³/h | 10.3896 gpd |