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Flow Rate

cfmtoL/s

Convert cubic feet per minute (cfm) to litres per second (L/s).

Factor1 cfm = 0.4719474 L/s

Converter

cfm

Accepts numbers or expressions, e.g. 150 + 14.7

Result
47.1947L/s

Rendered to 6 significant figures.

Formula

Formula
L/s = cfm × 0.4719474

Multiply any value in cubic feet per minute by 0.4719474 to obtain the value in litres per second.

Worked example

Convert 100 cfm to L/s.

  1. 01Start with 100 cfm.
  2. 02Multiply by the conversion factor: 100 × 0.4719474 = 47.1947 L/s.
Result100 cfm = 47.1947 L/s

Conversion table

cfmL/s
10.47195
20.94389
52.3597
104.7195
209.4389
5023.597
10047.195
20094.389
500235.97
1000471.95

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from cfm to L/s?
1 cfm equals 0.4719474 L/s. To convert, multiply the value in cubic feet per minute by 0.4719474.
How do I convert 1 cfm to L/s?
1 cfm = 0.471947 L/s. For any value, multiply by 0.4719474.
How do I convert L/s back to cfm?
Divide by the same factor — or equivalently, multiply by 2.11888. So 1 L/s = 2.11888 cfm.
When would I need to convert cubic foot per minute to litre per second?
Flow-rate conversions show up in pump curve interpretation, control valve sizing (Cv vs Kv), and aligning vendor specifications with process simulation outputs. cfm to L/s is a frequently needed conversion for hydraulic sizing.
Is the conversion exact?
Yes. Both cfm and L/s are defined by exact SI relationships, so the displayed factor is exact (any rounding shown is only for display).

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