Convert Cubic feet per second to US gallons per hour
Convert Cubic feet per second (ft³/s) to US gallons per hour (gph) instantly and accurately.
Conversion Formula
gph = ft³/s × 26929.87013
About Cubic feet per second
The cubic foot per second (ft³/s or cfs) equals 0.028316846592 m³/s, the primary unit for measuring river discharge and open-channel flow in the United States. The US Geological Survey publishes all streamflow data in cfs; irrigation water rights, flood-control gates, and dam spillway capacities are specified in cfs. The Colorado River at full natural flow is ≈22 000 cfs. 1 cfs = 0.028316846592 m³/s ≈ 28.317 L/s ≈ 448.8 US gpm.
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.
Quick Reference Table
| Cubic feet per second (ft³/s) | US gallons per hour (gph) |
|---|---|
| 1 ft³/s | 26929.9 gph |
| 2 ft³/s | 53859.7 gph |
| 5 ft³/s | 134649 gph |
| 10 ft³/s | 269299 gph |
| 25 ft³/s | 673247 gph |
| 50 ft³/s | 1346490 gph |
| 100 ft³/s | 2692990 gph |