Convert US gallons per minute to Acre-feet per day
Convert US gallons per minute (gpm) to Acre-feet per day (ac-ft/d) instantly and accurately.
Conversion Formula
ac-ft/d = gpm × 0.004419191919
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 Acre-feet per day
The acre-foot per day (ac-ft/d) equals 1233.48183754752/86400 ≈ 0.014278 m³/s, the practical unit for daily water-delivery scheduling in western US irrigation districts and river-compact administration. Water rights in the Colorado River system are specified in acre-feet per year; daily delivery schedules convert to ac-ft/d. A moderate-size irrigation lateral delivers 5-50 ac-ft/d. 1 ac-ft/d ≈ 0.014278 m³/s ≈ 504.2 US gal/min.
Quick Reference Table
| US gallons per minute (gpm) | Acre-feet per day (ac-ft/d) |
|---|---|
| 1 gpm | 0.00441919 ac-ft/d |
| 2 gpm | 0.00883838 ac-ft/d |
| 5 gpm | 0.022096 ac-ft/d |
| 10 gpm | 0.0441919 ac-ft/d |
| 25 gpm | 0.11048 ac-ft/d |
| 50 gpm | 0.22096 ac-ft/d |
| 100 gpm | 0.441919 ac-ft/d |