Convert Cubic feet per day to US gallons per second
Convert Cubic feet per day (ft³/d) to US gallons per second (gal/s) instantly and accurately.
Conversion Formula
gal/s = ft³/d × 8.658008658e-5
About Cubic feet per day
The cubic foot per day (ft³/d) equals 0.028316846592/86400 ≈ 3.277×10⁻⁷ m³/s, found in US oil-and-gas production reports for low-rate gas wells and groundwater monitoring wells. A marginal coalbed-methane well producing 50 Mcf/d (50 000 ft³/d) of gas represents a modest but economic flow; residential water-well yield tests report in ft³/d. 1 ft³/d ≈ 3.277×10⁻⁷ m³/s.
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.
Quick Reference Table
| Cubic feet per day (ft³/d) | US gallons per second (gal/s) |
|---|---|
| 1 ft³/d | 8.658 × 10-5 gal/s |
| 2 ft³/d | 0.00017316 gal/s |
| 5 ft³/d | 0.0004329 gal/s |
| 10 ft³/d | 0.000865801 gal/s |
| 25 ft³/d | 0.0021645 gal/s |
| 50 ft³/d | 0.004329 gal/s |
| 100 ft³/d | 0.00865801 gal/s |