Convert UK gallons per minute to Acre-feet per minute
Convert UK gallons per minute (gpm) to Acre-feet per minute (ac-ft/min) instantly and accurately.
Conversion Formula
ac-ft/min = gpm × 3.685575143e-6
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.
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.
Quick Reference Table
| UK gallons per minute (gpm) | Acre-feet per minute (ac-ft/min) |
|---|---|
| 1 gpm | 3.686 × 10-6 ac-ft/min |
| 2 gpm | 7.371 × 10-6 ac-ft/min |
| 5 gpm | 1.843 × 10-5 ac-ft/min |
| 10 gpm | 3.686 × 10-5 ac-ft/min |
| 25 gpm | 9.214 × 10-5 ac-ft/min |
| 50 gpm | 0.000184279 ac-ft/min |
| 100 gpm | 0.000368558 ac-ft/min |