Convert Cubic feet per second to Cubic feet per day
Convert Cubic feet per second (ft³/s) to Cubic feet per day (ft³/d) instantly and accurately.
Conversion Formula
ft³/d = ft³/s × 86400
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 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.
Quick Reference Table
| Cubic feet per second (ft³/s) | Cubic feet per day (ft³/d) |
|---|---|
| 1 ft³/s | 86400 ft³/d |
| 2 ft³/s | 172800 ft³/d |
| 5 ft³/s | 432000 ft³/d |
| 10 ft³/s | 864000 ft³/d |
| 25 ft³/s | 2160000 ft³/d |
| 50 ft³/s | 4320000 ft³/d |
| 100 ft³/s | 8640000 ft³/d |