How to convert cubic feet per minute to gallons per hour
gph = CFM × 448.8311688Multiply the value in cubic feet per minute by 448.8311688. To go the other way, multiply by 0.002228009259 (or divide by 448.8311688).
A cubic foot per minute is larger than an US gallon per hour: one cubic foot per minute contains 448.8311688 gallons per hour.
Worked examples
- 1 cubic foot per minute1 CFM × 448.8311688 = 448.8311688 gph
- 5 cubic feet per minute5 CFM × 448.8311688 = 2,244.155844 gph
- 10 cubic feet per minute10 CFM × 448.8311688 = 4,488.311688 gph
- 20 cubic feet per minute20 CFM × 448.8311688 = 8,976.623377 gph
- 100 cubic feet per minute100 CFM × 448.8311688 = 44,883.11688 gph
Cubic feet per minute to gallons per hour conversion table
Values are calculated by the conversion engine and rounded to 8 significant figures.
| Cubic feet per minute (CFM) | Gallons per hour (gph) |
|---|---|
| 0.1 CFM | 44.883117 gph |
| 0.25 CFM | 112.20779 gph |
| 0.5 CFM | 224.41558 gph |
| 1 CFM | 448.83117 gph |
| 2 CFM | 897.66234 gph |
| 3 CFM | 1,346.4935 gph |
| 4 CFM | 1,795.3247 gph |
| 5 CFM | 2,244.1558 gph |
| 6 CFM | 2,692.987 gph |
| 7 CFM | 3,141.8182 gph |
| 8 CFM | 3,590.6494 gph |
| 9 CFM | 4,039.4805 gph |
| 10 CFM | 4,488.3117 gph |
| Cubic feet per minute (CFM) | Gallons per hour (gph) |
|---|---|
| 12 CFM | 5,385.974 gph |
| 15 CFM | 6,732.4675 gph |
| 20 CFM | 8,976.6234 gph |
| 25 CFM | 11,220.779 gph |
| 30 CFM | 13,464.935 gph |
| 40 CFM | 17,953.247 gph |
| 50 CFM | 22,441.558 gph |
| 75 CFM | 33,662.338 gph |
| 100 CFM | 44,883.117 gph |
| 250 CFM | 112,207.79 gph |
| 500 CFM | 224,415.58 gph |
| 1,000 CFM | 448,831.17 gph |
About the units
Cubic foot per minute (CFM)
The US unit for fan, blower and air-compressor flow; about 1.699 m³/h. One cubic foot per minute equals 0.0004719474432 cubic meters per second (m³/s).
US gallon per hour (gph)
The US gallon per hour (gph) is a unit of volumetric flow rate in the US customary system. One US gallon per hour equals 0.000001051503273 cubic meters per second (m³/s).
Frequently asked questions
How many gallons per hour are in one cubic foot per minute?
There are 448.8311688 gallons per hour in one cubic foot per minute, and this value is exact by definition.
How do I convert cubic feet per minute to gallons per hour?
Multiply the number of cubic feet per minute by 448.8311688. For example, 10 CFM × 448.8311688 = 4,488.311688 gph.
How many cubic feet per minute are in one US gallon per hour?
One US gallon per hour equals 0.002228009259 cubic feet per minute. That is the reverse factor, 1 ÷ 448.8311688.
What is 10 cubic feet per minute in gallons per hour?
10 CFM = 4,488.311688 gph.
Is this CFM to gph converter accurate?
Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.
Convert cubic feet per minute to other units
- Cubic feet per minute to liters per minute
- Cubic feet per minute to gallons per minute
- Cubic feet per minute to cubic meters per hour
- Cubic feet per minute to liters per second
- Cubic feet per minute to cubic meters per second
- Cubic feet per minute to cubic feet per second