Volumetric flow rate.
Cubic foot per Seconds to Gallon per Hours Converter — ft3/s to gal/h
Convert Cubic foot per Seconds (ft3/s) to Gallon per Hours (gal/h) using the exact conversion factor (1 cubic foot per seconds = 26,929.87013 gallon per hours). See the formula, worked examples, conversion table, and common uses.
Cubic foot per Seconds to Gallon per Hours 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 0.02831684659 / 1.05150327e-6.
Flow rate uses cubic meters per second as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Cubic foot per Seconds to Gallon per Hours
Cubic foot per Seconds and Gallon per Hours 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. Cubic foot per Seconds is most often used for the standard unit used by the us geological survey for reporting river and stream discharge at gauging stations.
Formula
gallon per hours = cubic foot per seconds × 26929.8701299
This factor comes from each unit's defined relationship to the category's base unit: 1 cubic foot per seconds equals 0.028316846592 base units, and 1 gallon per hours equals 0.00000105150327333 base units, so dividing one by the other gives the direct cubic foot per seconds-to-gallon per hours factor of 26929.8701299.
Simple example
1 ft3/s × 26929.87013 = 26,929.87013 gal/h
1 cubic foot per seconds = 26,929.87013 gallon per hours.
Real-world example
60 ft3/s × 26929.87013 = 1,615,792.208 gal/h
60 cubic foot per seconds = 1,615,792.208 gallon per hours.
Conversion table
| Cubic foot per Seconds (ft3/s) | Gallon per Hours (gal/h) |
|---|---|
| 0.1 ft3/s | 2,692.987013 gal/h |
| 1 ft3/s | 26,929.87013 gal/h |
| 10 ft3/s | 269,298.7013 gal/h |
| 60 ft3/s | 1,615,792.208 gal/h |
| 100 ft3/s | 2,692,987.013 gal/h |
| 1,000 ft3/s | 26,929,870.13 gal/h |
Reverse conversion: Gallon per Hours to Cubic foot per Seconds
1 gal/h × 0.00003713348765 = 0.0000371335 ft3/s
1 gallon per hours = 0.0000371335 cubic foot per seconds.
cubic foot per seconds = gallon per hours × 0.0000371334876543
For a page dedicated to this direction, see Gallon per Hours to Cubic foot per Seconds.
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
Understanding the Gallon per Hours (gal/h)
Volumetric flow rate.
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 gallon per hours are in 1 cubic foot per seconds?
1 cubic foot per seconds equals 26,929.87013 gallon per hours, using the exact defined conversion factor rather than an estimate.
How do I convert cubic foot per seconds to gallon per hours?
Multiply the cubic foot per seconds value by 26929.87013. The converter above does this instantly to whatever precision you set.
How do I convert gallon per hours back to cubic foot per seconds?
Use the reverse factor: 1 gallon per hours equals 0.0000371335 cubic foot per seconds. You can also use the swap control in the converter above to flip the direction instantly.
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.
What is a gallon per hours?
Gallon per Hours (gal/h) is a unit of flow rate.
Is the cubic foot per seconds to gallon per hours conversion exact?
Yes. Both cubic foot per seconds and gallon per hours are defined by fixed standards rather than physical artifacts, so the factor of 26929.87013 used above is exact to as many digits as you choose to display.
Where is the cubic foot per seconds still used today?
United States
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.