How do you convert cubic feet per minute (CFM) to cubic meters per second?
To convert cubic feet per minute (CFM) to cubic meters per second, divide the number of cubic feet per minute (CFM) by 2,118.88000329. 1 cfm = 0.000471947 m³/s.
Cubic Meter per Second = Cubic Feet per Minute (CFM) ÷ 2,118.88000329
CFM, CMS and CMH in HVAC and fans
1 CFM (cubic foot per minute) = 0.000471947 m³/s. In the other direction, 1 m³/s — often written CMS — is about 2,118.88 CFM.
Duct and fan catalogues also use m³/h (CMH): 1 CFM ≈ 1.699 m³/h, so a 1,000 CFM fan moves about 1,699 m³/h or 0.472 m³/s.
Important: Fan ratings are usually given at zero static pressure; real airflow in a duct system is lower.
Related tools
Cubic Feet per Minute (CFM) to cubic meters per second conversion table
| Cubic Feet per Minute (CFM) (cfm) | Cubic Meters per Second (m³/s) |
|---|---|
| 21.19 cfm | 0.0100006 m³/s |
| 105.9 cfm | 0.0499792 m³/s |
| 211.9 cfm | 0.100006 m³/s |
| 1,059.4 cfm | 0.499981 m³/s |
| 2,118.9 cfm | 1.00001 m³/s |
| 10,594 cfm | 4.99981 m³/s |
| 21,189 cfm | 10.0001 m³/s |
What is Cubic Feet per Minute (CFM)?
CFM is a US-origin unit used to express airflow rate, especially in ventilation and HVAC systems.
Short history of Cubic Feet per Minute (CFM)
Derived from the imperial foot, it became the standard measurement unit in the North American HVAC and fan industry.
Open the Cubic Feet per Minute (CFM) unit guideWhat is Cubic Meter per Second?
The cubic meter per second is the SI derived unit of volumetric flow rate, expressing the volume of fluid passing per second.
Short history of Cubic Meter per Second
Derived directly from the SI units of volume and time, it is the standard unit for large-scale industrial and natural flow calculations.
Open the Cubic Meter per Second unit guideFrequently asked questions
What is 1 Cubic Feet per Minute (CFM) in Cubic Meter per Second?
1 cfm = 0.000471947443 m³/s.
How do you convert Cubic Feet per Minute (CFM) to Cubic Meter per Second?
To convert cubic feet per minute (CFM) to cubic meters per second, divide the number of cubic feet per minute (CFM) by 2,118.88000329. 1 cfm = 0.000471947 m³/s.
Frequently asked questions
How many cubic meters per second are in 1 cubic feet per minute (CFM)?
1 cfm = 0.000471947 m³/s.
How do you convert cubic feet per minute (CFM) to cubic meters per second?
To convert cubic feet per minute (CFM) to cubic meters per second, divide the number of cubic feet per minute (CFM) by 2,118.88000329. 1 cfm = 0.000471947 m³/s.
How many cubic feet per minute (CFM) are in 1 cubic meter per second?
1 m³/s = 2,118.88 cfm.