CFM to Liters per Second Converter
Enter the flow rate in cfm below to convert it to liters per second.
Convert CFM to Liters per Second
Enter a value in cfm (CFM) to convert to liters per second (L/s).
Cubic Feet per Minute to Liters per Second Conversion Table
Table showing various cubic feet per minute measurements converted to liters per second. Click any preset value or arrow to load it into the converter.
| CFM (CFM) | Liters per Second (L/s) |
|---|---|
| 1 CFM | 0.4719474 L/s |
| 2 CFM | 0.9438949 L/s |
| 2.5 CFM | 1.1798686 L/s |
| 5 CFM | 2.3597372 L/s |
| 10 CFM | 4.7194744 L/s |
| 15 CFM | 7.0792116 L/s |
| 20 CFM | 9.4389489 L/s |
| 25 CFM | 11.7986861 L/s |
| 30 CFM | 14.1584233 L/s |
| 50 CFM | 23.5973722 L/s |
How to Convert CFM to Liters per Second
To convert cfm to liters per second, multiply the flow rate by the following conversion ratio: 0.4719474 liters per second/cubic feet per minute.
Since one cubic feet per minute is equal to 0.4719474 liters per second, you can use this simple formula to convert:
The flow rate in liters per second is equal to the flow rate in cfm multiplied by 0.4719474.
For example, here's how to convert 5 cfm to liters per second using the formula above.
How Many Liters per Second Are in a Cubic Feet per Minute?
There are 0.4719474 liters per second in a cubic feet per minute, which is why we use this value in the formula above.
Our cubic feet per minute to liters per second calculator automatically converts your flow rate measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.
CFM and liters per second are both units used to measure flow rate. Keep reading to learn more about each unit.
What Is a Cubic Feet per Minute?
A cubic feet per minute is a unit of flow rate equal to 28.3168466 liters per minute (L/min), the base unit for flow rate. HVAC & air compressor airflow unit (28.3168 L/min). [1]
The cubic feet per minute is classified as a US customary unit of flow rate. CFM can be abbreviated as CFM; for example, 1 cubic feet per minute can be written as 1 CFM.
When working with cfm (CFM) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, cfm (CFM) are widely used across standard flow rate applications within US customary workflows, engineering documentation, and technical data sheets.
What Is a Liters per Second?
A liters per second is a unit of flow rate equal to 60 liters per minute (L/min), the base unit for flow rate. Equal to 60 L/min. [2]
The liters per second is classified as a metric and SI-compatible unit of flow rate. Liters per Second can be abbreviated as L/s; for example, 1 liters per second can be written as 1 L/s.
When working with liters per second (L/s) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.
In practice, liters per second (L/s) are widely used across standard flow rate applications within SI metric workflows, engineering documentation, and technical data sheets.
When converting flow rate between cfm (CFM) and liters per second (L/s), keep full floating-point precision (1 CFM = 0.4719474 L/s; 1 L/s = 2.11888 CFM) during intermediate calculations and round only the final liters per second figure to match your instrument tolerance.
More Cubic Feet per Minute & Liters per Second Conversions
Need to calculate in the opposite direction? Use our liters per second to cfm calculator to switch your starting unit immediately. You can also explore related tools such as converting liters per second to cfm, converting cfm to liters per minute, or converting cfm to m³/h.
Convert from CFM
Frequently Asked Questions
References
- [1]NIST SP 811 StandardNIST SP 811 (NIST SP 811 App. B.9 (Volume Divided by Time))·Flow Rate Metrology Standard — CFM (CFM) to Liters per Second (L/s)
- [2]NIST OWM SpecificationNIST OWM (SI Units — Volume & Flow Capacity)·Unit Specifications: Cubic Feet per Minute (CFM) (CFM) & Liters per Second (L/s)
- [3]BIPM ReferenceBIPM (Coherent Volumetric Flow Units (m³/s))·Conversion Factors & Mathematical Basis (CFM to L/s)