Volumetric flow rate.
Imperial gallon per Days to Cubic foot per Seconds Converter — imp gal/d to ft3/s
Convert Imperial gallon per Days (imp gal/d) to Cubic foot per Seconds (ft3/s) using the exact conversion factor (1 imperial gallon per days = 0.0000018581 cubic foot per seconds). See the formula, worked examples, conversion table, and common uses.
Imperial gallon per Days to Cubic foot per Seconds converter
Converter
Flow Rate Converter
Convert volumetric flow rates across metric, US, imperial, industrial, and scientific units.
Context values
Some unit families need one extra value for a physically accurate result.
Volumetric flow rate.
Result = input x 5.26167824e-8 / 0.02831684659.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Imperial gallon per Days to Cubic foot per Seconds
Imperial gallon per Days and Cubic foot per Seconds both measure volumetric flow rate — how much volume passes a point over time — used to size pipes and pumps, monitor river or stream discharge, control industrial processes, and set medical infusion rates. Both are volumetric flow rate units.
Formula
cubic foot per seconds = imperial gallon per days × 0.00000185814413467
This factor comes from each unit's defined relationship to the category's base unit: 1 imperial gallon per days equals 5.261678e-8 base units, and 1 cubic foot per seconds equals 0.028316846592 base units, so dividing one by the other gives the direct imperial gallon per days-to-cubic foot per seconds factor of 0.00000185814413467.
Simple example
1 imp gal/d × 0.000001858144135 = 0.0000018581 ft3/s
1 imperial gallon per days = 0.0000018581 cubic foot per seconds.
Real-world example
60 imp gal/d × 0.000001858144135 = 0.0001114886 ft3/s
60 imperial gallon per days = 0.0001114886 cubic foot per seconds.
Conversion table
| Imperial gallon per Days (imp gal/d) | Cubic foot per Seconds (ft3/s) |
|---|---|
| 0.1 imp gal/d | 1.858144e-7 ft3/s |
| 1 imp gal/d | 0.0000018581 ft3/s |
| 10 imp gal/d | 0.0000185814 ft3/s |
| 60 imp gal/d | 0.0001114886 ft3/s |
| 100 imp gal/d | 0.0001858144 ft3/s |
| 1,000 imp gal/d | 0.0018581441 ft3/s |
Reverse conversion: Cubic foot per Seconds to Imperial gallon per Days
0.0000018581 ft3/s × 538171.3837 = 0.999976248 imp gal/d
0.0000018581 cubic foot per seconds = 0.999976248 imperial gallon per days.
imperial gallon per days = cubic foot per seconds × 538171.383661
For a page dedicated to this direction, see Cubic foot per Seconds to Imperial gallon per Days.
Understanding the Imperial gallon per Days (imp gal/d)
Volumetric flow rate.
Understanding the Cubic foot per Seconds
Cubic foot per Seconds (ft3/s) measures volumetric flow rate. One cubic foot of volume passing a point every second. It is classified as a US customary flow-rate unit.
Where it's used: United States
Uses of the Cubic foot per Seconds today
- The standard unit used by the US Geological Survey for reporting river and stream discharge at gauging stations
Cubic foot per Seconds — sources
- USGS Water Science School — Cubic feet per second (cfs) is the standard unit USGS uses to report streamflow.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many cubic foot per seconds are in 1 imperial gallon per days?
1 imperial gallon per days equals 0.0000018581 cubic foot per seconds, using the exact defined conversion factor rather than an estimate.
How do I convert imperial gallon per days to cubic foot per seconds?
Multiply the imperial gallon per days value by 0.000001858144135. The converter above does this instantly to whatever precision you set.
How do I convert cubic foot per seconds back to imperial gallon per days?
Use the reverse factor: 1 cubic foot per seconds equals 538,171.3837 imperial gallon per days. You can also use the swap control in the converter above to flip the direction instantly.
What is a imperial gallon per days?
Imperial gallon per Days (imp gal/d) is a unit of flow rate.
What is a cubic foot per seconds?
Cubic foot per Seconds (ft3/s) measures volumetric flow rate. One cubic foot of volume passing a point every second. It is classified as a US customary flow-rate unit.
Is the imperial gallon per days to cubic foot per seconds conversion exact?
Yes. Both imperial gallon per days and cubic foot per seconds are defined by fixed standards rather than physical artifacts, so the factor of 0.000001858144135 used above is exact to as many digits as you choose to display.
What's the difference between volumetric and mass flow rate?
Volumetric flow rate measures the volume of fluid passing a point per unit time (for example, liters per second). Mass flow rate measures the mass instead. For a fluid of constant density the two are directly proportional, but for compressible fluids like gases, mass flow is often the more meaningful quantity.