Cubic foot per minute (CFM)
One cubic foot every minute. The usual US unit for fans, air compressors and ventilation.
What is a cubic foot per minute?
- Symbol
- CFM
- Quantity
- Flow Rate
- Unit system
- US customary
- Definition
- One cubic foot every minute. The usual US unit for fans, air compressors and ventilation.
- Exact
- Yes, the value is exact by definition
- Source
- NIST Special Publication 811 (2008), Appendix B.8
Common applications
Used in the United States for fans, range hoods, air compressors, vacuum cleaners and HVAC airflow.
Cubic foot per minute in other flow rate units
- 1 CFM = 0.0004719474432 m³/sCubic meter per second
- 1 CFM = 1.69901079552 m³/hCubic foot per minute to Cubic meter per hour converter
- 1 CFM = 0.028316846592 m³/minCubic meter per minute
- 1 CFM = 0.4719474432 L/sLiter per second
- 1 CFM = 28.316846592 L/minLiter per minute
- 1 CFM = 1699.01079552 L/hLiter per hour
- 1 CFM = 28316.846592 mL/minMilliliter per minute
- 1 CFM ≈ 0.01666666667 ft³/sCubic foot per second
- 1 CFM ≈ 7.480519481 GPMGallon (US) per minute
- 1 CFM ≈ 448.8311688 GPHGallon (US) per hour
- 1 CFM ≈ 10771.94805 GPDGallon (US) per day
- 1 CFM ≈ 0.01077194805 MGDMillion gallons (US) per day
- 1 CFM ≈ 6.228835459 imp gal/minGallon (imperial) per minute
- 1 CFM ≈ 256.4749536 bbl/dBarrel (oil) per day
Cubic foot per minute quick reference
| Cubic foot per minute | Cubic meter per hour | Liter per minute | Gallon (US) per minute |
|---|---|---|---|
| 1 CFM | = 1.69901079552 m³/h | = 28.316846592 L/min | ≈ 7.480519481 GPM |
| 10 CFM | = 16.9901079552 m³/h | = 283.16846592 L/min | ≈ 74.80519481 GPM |
| 100 CFM | = 169.901079552 m³/h | = 2831.6846592 L/min | ≈ 748.0519481 GPM |
| 1000 CFM | = 1699.01079552 m³/h | = 28316.846592 L/min | ≈ 7480.519481 GPM |
Where the cubic foot per minute fits
The next smaller flow rate unit is the cubic meter per hour (m³/h). 1 CFM = 1.69901079552 m³/h, and 1 m³/h ≈ 0.5885777787 CFM.
The next larger flow rate unit is the liter per second (L/s). 1 CFM = 0.4719474432 L/s, and 1 L/s ≈ 2.118880003 CFM.
Frequently asked questions
- How many cubic meters per hour are in one cubic foot per minute?
- One cubic foot per minute = 1.69901079552 m³/h (cubic meters per hour).
- How many liters per minute are in one cubic foot per minute?
- One cubic foot per minute = 28.316846592 L/min (liters per minute).
- How many US gallons per minute are in one cubic foot per minute?
- One cubic foot per minute ≈ 7.480519481 GPM (US gallons per minute).