Cubic feet per minute to Litres per second Converter CFM → L/s

1 cubic foot per minute (CFM) = 0.4719474432 litres per second (L/s). Type a value below — the conversion happens instantly, entirely on your device.

From

1 CFM = 0.4719474432 L/s

Precision

100 cubic feet per minute = 47.194744 litres per second

100 × 0.471947 = 47.194744

1 CFM equals 0.471947 L/s, so multiplying by 0.471947 converts the value. The result describes the exact same quantity — only the measuring stick changes.

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How to convert cubic feet per minute to litres per second

litres per second = cubic feet per minute × 0.4719474432 — multiply the cubic foot per minute value by 0.471947.

Example: 100 CFM = 47.1947 L/s.

To convert the other way: cubic feet per minute = litres per second ÷ 0.4719474432

Cubic feet per minute to litres per second multiplies by about 0.4719: a 100 CFM fan moves about 47.2 L/s of air. The bridge between US and metric airflow (ventilation, extractor) ratings.

Cubic feet per minute to Litres per second conversion table

Cubic feet per minute (CFM)	Litres per second (L/s)
0.1	0.047194744
0.25	0.11798686
0.5	0.23597372
1	0.47194744
2	0.94389489
3	1.4158423
4	1.8877898
5	2.3597372
6	2.8316847
7	3.3036321
8	3.7755795
9	4.247527
10	4.7194744
15	7.0792116
20	9.4389489
25	11.798686
30	14.158423
40	18.877898
50	23.597372
75	35.396058
100	47.194744
250	117.98686
500	235.97372
1000	471.94744

About the units

What is a cubic foot per minute?

Cubic feet per minute — the US airflow unit for fans, HVAC and compressors. One CFM is about 1.699 m³/h or 0.472 L/s.

What is a litre per second?

One litre per second is 0.001 m³/s. A common unit for pumps and plumbing flows.

Frequently asked questions

How many litres per second are in 1 cubic foot per minute?

1 cubic foot per minute (CFM) = 0.4719474432 litres per second (L/s).

What is the formula to convert cubic feet per minute to litres per second?

litres per second = cubic feet per minute × 0.4719474432 — multiply the cubic foot per minute value by 0.471947.

How do I convert CFM to L/s without a calculator?

Multiply by 0.472 for a close estimate. Exact factor: 1 CFM = 0.4719474432 L/s.

Is this CFM-to-L/s converter accurate and private?

Yes. It uses the exact internationally defined conversion factors and computes results locally in your browser — your input is never sent to a server, and the page keeps working offline.