Convert flow rate units — m³/s, L/s, L/min, ft³/s, gallon/min and more.
| Unit | Name | Value |
|---|---|---|
| m³/min | Cubic Meter/Minute | 59.9988 |
| m³/h | Cubic Meter/Hour | 3597.1223 |
| L/s | Liter/Second | 1000 |
| L/min | Liter/Minute | 59998.8 |
| ft³/s | Cubic Foot/Second | 35.314475 |
| ft³/min | Cubic Foot/Minute | 2118.6441 |
| gal/min | Gallon/Minute (US) | 15850.372 |
| gal/h | Gallon/Hour (US) | 951022.35 |
Formula: CFM = m³/s × 2119
Multiply any m³/s value by 2119 to get CFM.
Reverse: m³/s = CFM × 0.0004719
Common flow rate values — factor: 1 m³/s = 2119 CFM
| m³/s (m³/s) | CFM (CFM) | Context |
|---|---|---|
| 1.000e-06 m³/s | 0.002119 CFM | Dripping faucet |
| 1.000e-05 m³/s | 0.02119 CFM | Trickle |
| 0.0001 m³/s | 0.2119 CFM | Small stream |
| 0.001 m³/s | 2.119 CFM | 1 L/s flow |
| 0.01 m³/s | 21.19 CFM | 10 L/s pump |
| 0.083 m³/s | 175.9 CFM | 5 L/s heart |
| 0.1 m³/s | 211.9 CFM | 100 L/s |
| 1 m³/s | 2119 CFM | Large pump |
| 10 m³/s | 2.119e+04 CFM | Small river |
| 100 m³/s | 2.119e+05 CFM | Large river |
| 1000 m³/s | 2.119e+06 CFM | Major river |
| 1e+04 m³/s | 2.119e+07 CFM | Large river system |
| 1e+05 m³/s | 2.119e+08 CFM | Amazon fraction |
| 2.15e+05 m³/s | 4.556e+08 CFM | Amazon River |
| 1e+06 m³/s | 2.119e+09 CFM | Extreme |
1 m³/s = 2119 CFM.
m³/s × 1000 = L/s × 60 = L/min. Use this chain for quick conversions.
Multiply result by 0.0004719 to recover the original m³/s value.
Designs pumps, pipes, and water distribution systems with flow rates in m³/s, L/s, and GPM.
Specifies air handling units and ductwork in CFM (ft³/min) and m³/h for North American and European projects.
Monitors and controls treatment processes with flow rates in m³/h, L/s, and MGD.
Designs sprinkler systems with required flows in GPM and L/min per NFPA standards.
Measures river and groundwater flows in m³/s (m) and ft³/s (cfs) for flood modeling and water resource planning.
Configures ventilators and oxygen delivery systems with flow rates specified in L/min.
Cubic meters per second (m³/s) is the SI unit of volumetric flow rate, defined as the volume of fluid passing a point per second. It is used in hydrology, hydraulic engineering, and industrial process engineering where large-scale flows are measured.
River flows are commonly expressed in m³/s: the Amazon averages about 215,000 m³/s; the Ganges about 12,000 m³/s; a large municipal water main might carry 1–10 m³/s. The SI unit simplifies dimensional analysis with pressure (Pa) and energy (J).
Interesting fact: The Amazon River discharges more freshwater into the ocean than the next seven largest rivers combined. Its flow of ~215,000 m³/s equals about 215 billion liters per second — enough to fill an Olympic swimming pool in less than 1.25 milliseconds.
Cubic feet per minute (CFM) is the dominant airflow unit in North American HVAC, ventilation, and pneumatic systems. One CFM = 0.000472 m³/s = 28.32 L/min.
HVAC systems in the US are universally specified in CFM: a typical bedroom requires 50–100 CFM of ventilation; a commercial kitchen exhaust hood needs 300–1,500 CFM; a large data center cooling system may require 100,000+ CFM.
Interesting fact: The term CFM is so entrenched in US building practice that even metric-preferring engineers typically specify airflows in CFM for North American projects. Air compressors are rated in CFM at a specified pressure (e.g., '10 CFM @ 90 psi').
Converting m³/s to CFM is essential across hydraulic engineering, HVAC, water treatment, fire protection, and medicine. SI units (m³/s, L/s) are standard in science; European engineering uses m³/h; US systems use GPM and CFM; medical applications use L/min.
Quick reference: 10 m³/s = 2.119e+04 CFM. Reverse: 1 CFM = 0.0004719 m³/s. Factor: 1 m³/s = 2119 CFM.
All conversions use IEEE 754 double-precision arithmetic, accurate to at least 8 significant figures.