Convert US gallons per day to Cubic feet per minute
Convert US gallons per day (gpd) to Cubic feet per minute (ft³/min) instantly and accurately.
Conversion Formula
ft³/min = gpd × 9.283371914e-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 Cubic feet per minute
The cubic foot per minute (cfm or ft³/min) equals 0.028316846592/60 ≈ 4.719×10⁻⁴ m³/s, the dominant unit for ventilation, HVAC airflow, and compressed-air system design in the US. ASHRAE ventilation standards, building-code fresh-air requirements, and dust-collector capacity are all stated in cfm. A residential HVAC system moves 800-1 200 cfm; an industrial dust collector handles 2 000-20 000 cfm. 1 cfm ≈ 0.4719 L/s.
Quick Reference Table
| US gallons per day (gpd) | Cubic feet per minute (ft³/min) |
|---|---|
| 1 gpd | 9.283 × 10-5 ft³/min |
| 2 gpd | 0.000185667 ft³/min |
| 5 gpd | 0.000464169 ft³/min |
| 10 gpd | 0.000928337 ft³/min |
| 25 gpd | 0.00232084 ft³/min |
| 50 gpd | 0.00464169 ft³/min |
| 100 gpd | 0.00928337 ft³/min |