Convert UK gallons per minute to Acre-feet per second
Convert UK gallons per minute (gpm) to Acre-feet per second (ac-ft/s) instantly and accurately.
Conversion Formula
ac-ft/s = gpm × 6.142625239e-8
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 second
The acre-foot per second (ac-ft/s) equals 1233.48183754752 m³/s, an enormous unit representing the flow that would fill a football-field-sized area to 1 ft depth every second. It appears in descriptions of exceptionally large dam-break flood waves and major river-system extreme events. The 1976 Teton Dam collapse peak outflow was estimated at ≈65 000 ft³/s ≈ 1.49 ac-ft/s. 1 ac-ft/s = 1 233.48 m³/s.
Quick Reference Table
| UK gallons per minute (gpm) | Acre-feet per second (ac-ft/s) |
|---|---|
| 1 gpm | 6.143 × 10-8 ac-ft/s |
| 2 gpm | 1.229 × 10-7 ac-ft/s |
| 5 gpm | 3.071 × 10-7 ac-ft/s |
| 10 gpm | 6.143 × 10-7 ac-ft/s |
| 25 gpm | 1.536 × 10-6 ac-ft/s |
| 50 gpm | 3.071 × 10-6 ac-ft/s |
| 100 gpm | 6.143 × 10-6 ac-ft/s |