Convert US gallons per hour to Acre-feet per second
Convert US gallons per hour (gph) to Acre-feet per second (ac-ft/s) instantly and accurately.
Conversion Formula
ac-ft/s = gph × 8.524675770e-10
About US gallons per hour
The US gallon per hour (gph) equals 3.785411784×10⁻³/3600 ≈ 1.051×10⁻⁶ m³/s, common in oil-burner nozzle ratings, water-softener regeneration, and RV/marine-plumbing specifications. Residential oil-burner nozzles are rated in gph (e.g., 0.75 gph, 1.00 gph); a small boat bilge pump might handle 200-500 gph. 1 US gph ≈ 1.052×10⁻⁶ m³/s ≈ 3.785 L/h.
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
| US gallons per hour (gph) | Acre-feet per second (ac-ft/s) |
|---|---|
| 1 gph | 8.525 × 10-10 ac-ft/s |
| 2 gph | 1.705 × 10-9 ac-ft/s |
| 5 gph | 4.262 × 10-9 ac-ft/s |
| 10 gph | 8.525 × 10-9 ac-ft/s |
| 25 gph | 2.131 × 10-8 ac-ft/s |
| 50 gph | 4.262 × 10-8 ac-ft/s |
| 100 gph | 8.525 × 10-8 ac-ft/s |