Convert Cubic feet per minute to US gallons per hour
Convert Cubic feet per minute (ft³/min) to US gallons per hour (gph) instantly and accurately.
Conversion Formula
gph = ft³/min × 448.8311688
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.
About US gallons per hour
The US gallon per hour (gph) equals 3.785411784×10⁻³/3600 ≈ 1.051×10⁻⁶ m³/s, common in oil-burner nozzle ratings, water-softener regeneration, and RV/marine-plumbing specifications. Residential oil-burner nozzles are rated in gph (e.g., 0.75 gph, 1.00 gph); a small boat bilge pump might handle 200-500 gph. 1 US gph ≈ 1.052×10⁻⁶ m³/s ≈ 3.785 L/h.
Quick Reference Table
| Cubic feet per minute (ft³/min) | US gallons per hour (gph) |
|---|---|
| 1 ft³/min | 448.831 gph |
| 2 ft³/min | 897.662 gph |
| 5 ft³/min | 2244.16 gph |
| 10 ft³/min | 4488.31 gph |
| 25 ft³/min | 11220.8 gph |
| 50 ft³/min | 22441.6 gph |
| 100 ft³/min | 44883.1 gph |