Convert US gallons per second to Cubic feet per second
Convert US gallons per second (gal/s) to Cubic feet per second (ft³/s) instantly and accurately.
Conversion Formula
ft³/s = gal/s × 0.1336805556
About US gallons per second
The US gallon per second (gal/s) equals 3.785411784×10⁻³ m³/s, used for very large pump discharge rates and fire-suppression deluge systems. A large centrifugal fire pump rated 1 500 US gal/min delivers exactly 25 US gal/s; industrial cooling-tower makeup lines are sized in gal/s at peak demand. 1 US gal/s = 3.785411784×10⁻³ m³/s = 60 US gal/min ≈ 227.1 L/min.
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.
Quick Reference Table
| US gallons per second (gal/s) | Cubic feet per second (ft³/s) |
|---|---|
| 1 gal/s | 0.133681 ft³/s |
| 2 gal/s | 0.267361 ft³/s |
| 5 gal/s | 0.668403 ft³/s |
| 10 gal/s | 1.33681 ft³/s |
| 25 gal/s | 3.34201 ft³/s |
| 50 gal/s | 6.68403 ft³/s |
| 100 gal/s | 13.3681 ft³/s |