Cubic feet per minute to liters per second
Type a value in cubic feet per minute to see it in liters per second straight away, or type in the second box to convert back.
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Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Type the value in the cubic feet per minute box.
- Read the result in liters per second as you type, and pick the precision you need.
- Swap the direction to convert back, or copy the result.
How it is calculated
L/s = CFM × 0.4719474432
Multiply the value in cubic feet per minute by 0.4719474432 to get liters per second.
Example
To convert 25 CFM to liters per second: 25 × 0.4719474432 = 11.7987 L/s.
Conversion table
| Cubic feet per minute (CFM) | Liters per second (L/s) |
|---|---|
| 1 | 0.471947 |
| 2 | 0.943895 |
| 3 | 1.41584 |
| 5 | 2.35974 |
| 10 | 4.71947 |
| 20 | 9.43895 |
| 25 | 11.7987 |
| 50 | 23.5974 |
| 100 | 47.1947 |
| 250 | 117.987 |
| 500 | 235.974 |
| 1,000 | 471.947 |
About the units
- Cubic foot per minute
- One cubic foot (28.316846592 L) passing each minute, the airflow unit for AC units, fans and ventilation.
- Liter per second
- One liter passing each second, 0.001 m³/s, used in ventilation design and drainage networks.
Limits and caveats
- Results are rounded for display and computed with the browser's floating point precision (about 15 significant digits).
- Both unit factors are exact by their official definitions.
Questions about this tool
How many liters per second are in one cubic foot per minute?
1 CFM = 0.471947 L/s exactly.
How do I convert cubic feet per minute to liters per second?
Use L/s = CFM × 0.4719474432. For example, 25 CFM = 11.7987 L/s.
How many cubic feet per minute are in one liter per second?
1 L/s = 2.11888 CFM.
How do I convert liters per minute to US gallons per minute?
One US gallon per minute is exactly 3.785411784 L/min, so divide the liters figure by 3.785411784. For example, 20 L/min is about 5.28 US gpm.
What does CFM mean on AC units and fans?
CFM stands for cubic feet per minute and describes how much air a unit moves. One CFM equals 1.69901079552 cubic meters per hour or 0.4719474432 liters per second.