Convert Acre-feet per minute to UK gallons per minute
Convert Acre-feet per minute (ac-ft/min) to UK gallons per minute (gpm) instantly and accurately.
Conversion Formula
gpm = ac-ft/min × 271328.0726
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 UK gallons per minute
The UK (imperial) gallon per minute (gpm) equals 4.54609×10⁻³/60 ≈ 7.577×10⁻⁵ m³/s, historically used in British plumbing design, pump curves, and water-treatment plant sizing. Pre-metric UK water-industry capacity tables and pump manufacturers quoted flows in UK gal/min; legacy British Standard BS EN pump curves often show both units. 1 UK gpm ≈ 7.577×10⁻⁵ m³/s ≈ 4.546 L/min.
Quick Reference Table
| Acre-feet per minute (ac-ft/min) | UK gallons per minute (gpm) |
|---|---|
| 1 ac-ft/min | 271328 gpm |
| 2 ac-ft/min | 542656 gpm |
| 5 ac-ft/min | 1356640 gpm |
| 10 ac-ft/min | 2713280 gpm |
| 25 ac-ft/min | 6783200 gpm |
| 50 ac-ft/min | 13566400 gpm |
| 100 ac-ft/min | 27132800 gpm |