Convert Acre-feet per minute to US gallons per minute
Convert Acre-feet per minute (ac-ft/min) to US gallons per minute (gpm) instantly and accurately.
Conversion Formula
gpm = ac-ft/min × 325851.4286
About Acre-feet per minute
The acre-foot per minute (ac-ft/min) equals 1233.48183754752/60 ≈ 20.558 m³/s, encountered in large irrigation canal capacity descriptions and reservoir emergency spillway sizing in the US West. A major canal gate releasing 1 ac-ft/min drains a 1-acre field 1 foot deep every minute - a substantial agricultural flow. 1 ac-ft/min ≈ 20.558 m³/s ≈ 726.0 ft³/s.
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.
Quick Reference Table
| Acre-feet per minute (ac-ft/min) | US gallons per minute (gpm) |
|---|---|
| 1 ac-ft/min | 325851 gpm |
| 2 ac-ft/min | 651703 gpm |
| 5 ac-ft/min | 1629260 gpm |
| 10 ac-ft/min | 3258510 gpm |
| 25 ac-ft/min | 8146290 gpm |
| 50 ac-ft/min | 16292600 gpm |
| 100 ac-ft/min | 32585100 gpm |