Convert US gallons per minute to Cubic feet per minute
Convert US gallons per minute (gpm) to Cubic feet per minute (ft³/min) instantly and accurately.
Conversion Formula
ft³/min = gpm × 0.1336805556
About US gallons per minute
The US gallon per minute (gpm) equals 3.785411784×10⁻³/60 ≈ 6.309×10⁻⁵ m³/s, the dominant volumetric flow unit in US plumbing, HVAC, and water-treatment industries. EPA showerhead standards are set at 2.5 gpm; residential water meters size at 3/4"-1" for 5-20 gpm; municipal water-distribution design uses hundreds to thousands of gpm. 1 gpm ≈ 6.309×10⁻⁵ m³/s = 3.785 L/min.
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 minute (gpm) | Cubic feet per minute (ft³/min) |
|---|---|
| 1 gpm | 0.133681 ft³/min |
| 2 gpm | 0.267361 ft³/min |
| 5 gpm | 0.668403 ft³/min |
| 10 gpm | 1.33681 ft³/min |
| 25 gpm | 3.34201 ft³/min |
| 50 gpm | 6.68403 ft³/min |
| 100 gpm | 13.3681 ft³/min |