Convert Acre-feet per hour to UK gallons per minute
Convert Acre-feet per hour (ac-ft/h) to UK gallons per minute (gpm) instantly and accurately.
Conversion Formula
gpm = ac-ft/h × 4522.134543
About Acre-feet per hour
The acre-foot per hour (ac-ft/h) equals 1233.48183754752/3600 ≈ 0.34263 m³/s, standard for sizing irrigation district delivery canals, reservoir outflow scheduling, and aquifer recharge basin calculations in the western US. The US Bureau of Reclamation uses ac-ft/h for canal operational planning; a 1 000-acre farm irrigating with 0.5 in/h rain-equivalent receives ≈41 ac-ft/h. 1 ac-ft/h ≈ 0.34263 m³/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 hour (ac-ft/h) | UK gallons per minute (gpm) |
|---|---|
| 1 ac-ft/h | 4522.13 gpm |
| 2 ac-ft/h | 9044.27 gpm |
| 5 ac-ft/h | 22610.7 gpm |
| 10 ac-ft/h | 45221.3 gpm |
| 25 ac-ft/h | 113053 gpm |
| 50 ac-ft/h | 226107 gpm |
| 100 ac-ft/h | 452213 gpm |