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Volumetric Flow Rate

cfmtogpm (US)

Convert cubic feet per minute (cfm) to US gallons per minute (gpm (US)).

Factor1 cfm = 7.480519 gpm (US)

Converter

cfm

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

Result
74.8052gpm (US)

Rendered to 6 significant figures.

Formula

Formula
gpm (US) = cfm × 7.480519

Multiply any value in cubic feet per minute by 7.480519 to obtain the value in US gallons per minute.

Worked example

Convert 10 cfm to gpm (US).

  1. 01Start with 10 cfm.
  2. 02Multiply by the conversion factor: 10 × 7.480519 = 74.8052 gpm (US).
Result10 cfm = 74.8052 gpm (US)

Conversion table

cfmgpm (US)
17.4805
214.961
537.403
1074.805
20149.61
50374.03
100748.05
2001496.1
5003740.3
10007480.5

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from cfm to gpm (US)?
1 cfm equals 7.480519 gpm (US). To convert, multiply the value in cubic feet per minute by 7.480519.
How do I convert 1 cfm to gpm (US)?
1 cfm = 7.48052 gpm (US). For any value, multiply by 7.480519.
How do I convert gpm (US) back to cfm?
Divide by the same factor — or equivalently, multiply by 0.1336806. So 1 gpm (US) = 0.133681 cfm.
When would I need to convert cubic foot per minute to US gallon per minute?
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 gpm (US) is a frequently needed conversion for flow datasheet preparation.
Is the conversion exact?
Yes. Both cfm and gpm (US) are defined by exact SI relationships, so the displayed factor is exact (any rounding shown is only for display).

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