Volumetric flow rate.
Cubic foot per Minutes to Gallon per Hours Converter — ft3/min to gal/h
Convert Cubic foot per Minutes (ft3/min) to Gallon per Hours (gal/h) using the exact conversion factor (1 cubic foot per minutes = 448.8311688 gallon per hours). See the formula, worked examples, conversion table, and common uses.
Cubic foot per Minutes 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 0.0004719474432 / 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 Minutes to Gallon per Hours
Cubic foot per Minutes 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 Minutes is most often used for the standard unit for rating hvac airflow, compressed-air equipment output, and fan/blower performance.
Formula
gallon per hours = cubic foot per minutes × 448.831168831
This factor comes from each unit's defined relationship to the category's base unit: 1 cubic foot per minutes equals 0.0004719474432 base units, and 1 gallon per hours equals 0.00000105150327333 base units, so dividing one by the other gives the direct cubic foot per minutes-to-gallon per hours factor of 448.831168831.
Simple example
1 ft3/min × 448.8311688 = 448.8311688 gal/h
1 cubic foot per minutes = 448.8311688 gallon per hours.
Real-world example
60 ft3/min × 448.8311688 = 26,929.87013 gal/h
60 cubic foot per minutes = 26,929.87013 gallon per hours.
Conversion table
| Cubic foot per Minutes (ft3/min) | Gallon per Hours (gal/h) |
|---|---|
| 0.1 ft3/min | 44.88311688 gal/h |
| 1 ft3/min | 448.8311688 gal/h |
| 10 ft3/min | 4,488.311688 gal/h |
| 60 ft3/min | 26,929.87013 gal/h |
| 100 ft3/min | 44,883.11688 gal/h |
| 1,000 ft3/min | 448,831.1688 gal/h |
Reverse conversion: Gallon per Hours to Cubic foot per Minutes
448.8311688 gal/h × 0.002228009259 = 0.9999999999 ft3/min
448.8311688 gallon per hours = 0.9999999999 cubic foot per minutes.
cubic foot per minutes = gallon per hours × 0.00222800925926
For a page dedicated to this direction, see Gallon per Hours to Cubic foot per Minutes.
Understanding the Cubic foot per Minutes
Cubic foot per Minutes (ft3/min) measures volumetric flow rate. One cubic foot of volume passing a point every minute. It is classified as a US customary flow-rate unit.
Where it's used: United States, and widely recognized internationally in HVAC and compressed-air equipment specifications
Uses of the Cubic foot per Minutes today
- The standard unit for rating HVAC airflow, compressed-air equipment output, and fan/blower performance
Understanding the Gallon per Hours (gal/h)
Volumetric flow rate.
Cubic foot per Minutes — sources
- AMCA / ASHRAE HVAC industry standards — CFM is the conventional unit for airflow ratings in HVAC and industrial air-moving equipment.
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 minutes?
1 cubic foot per minutes equals 448.8311688 gallon per hours, using the exact defined conversion factor rather than an estimate.
How do I convert cubic foot per minutes to gallon per hours?
Multiply the cubic foot per minutes value by 448.8311688. The converter above does this instantly to whatever precision you set.
How do I convert gallon per hours back to cubic foot per minutes?
Use the reverse factor: 1 gallon per hours equals 0.0022280093 cubic foot per minutes. You can also use the swap control in the converter above to flip the direction instantly.
What is a cubic foot per minutes?
Cubic foot per Minutes (ft3/min) measures volumetric flow rate. One cubic foot of volume passing a point every minute. 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 minutes to gallon per hours conversion exact?
Yes. Both cubic foot per minutes and gallon per hours are defined by fixed standards rather than physical artifacts, so the factor of 448.8311688 used above is exact to as many digits as you choose to display.
Where is the cubic foot per minutes still used today?
United States, and widely recognized internationally in HVAC and compressed-air equipment specifications
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.