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Volumetric Flow Rate

cfmtoL/hr

Convert cubic feet per minute (cfm) to litres per hour (L/hr).

Factor1 cfm = 1699.011 L/hr

Converter

cfm

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

Result
16990.1L/hr

Rendered to 6 significant figures.

Formula

Formula
L/hr = cfm × 1699.011

Multiply any value in cubic feet per minute by 1699.011 to obtain the value in litres per hour.

Worked example

Convert 10 cfm to L/hr.

  1. 01Start with 10 cfm.
  2. 02Multiply by the conversion factor: 10 × 1699.011 = 16990.1 L/hr.
Result10 cfm = 16990.1 L/hr

Conversion table

cfmL/hr
11699
23398
58495.1
1016990
2033980
5084951
1001.6990e+5
2003.3980e+5
5008.4951e+5
10001.6990e+6

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from cfm to L/hr?
1 cfm equals 1699.011 L/hr. To convert, multiply the value in cubic feet per minute by 1699.011.
How do I convert 1 cfm to L/hr?
1 cfm = 1699.01 L/hr. For any value, multiply by 1699.011.
How do I convert L/hr back to cfm?
Divide by the same factor — or equivalently, multiply by 0.0005885778. So 1 L/hr = 0.000588578 cfm.
When would I need to convert cubic foot per minute to litre per hour?
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/hr is a frequently needed conversion for flow datasheet preparation.
Is the conversion exact?
The factor shown is precise to at least 7 significant figures. For most process-engineering work this is far better than instrument accuracy. For metrology or trade applications, refer to the relevant national standard (NIST, BIPM, ISO 80000).

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