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Volumetric Flow Rate

gpm (US)toft³/min

Convert US gallons per minute (gpm (US)) to cubic feet per minute (ft³/min).

Factor1 gpm (US) = 0.1336806 ft³/min

Converter

gpm (US)

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

Result
13.3681ft³/min

Rendered to 6 significant figures.

Formula

Formula
ft³/min = gpm (US) × 0.1336806

Multiply any value in US gallons per minute by 0.1336806 to obtain the value in cubic feet per minute.

Worked example

Convert 100 gpm (US) to ft³/min.

  1. 01Start with 100 gpm (US).
  2. 02Multiply by the conversion factor: 100 × 0.1336806 = 13.3681 ft³/min.
Result100 gpm (US) = 13.3681 ft³/min

Conversion table

gpm (US)ft³/min
10.13368
20.26736
50.6684
101.3368
202.6736
506.684
10013.368
20026.736
50066.84
1000133.68

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from gpm (US) to ft³/min?
1 gpm (US) equals 0.1336806 ft³/min. To convert, multiply the value in US gallons per minute by 0.1336806.
How do I convert 1 gpm (US) to ft³/min?
1 gpm (US) = 0.133681 ft³/min. For any value, multiply by 0.1336806.
How do I convert ft³/min back to gpm (US)?
Divide by the same factor — or equivalently, multiply by 7.480519. So 1 ft³/min = 7.48052 gpm (US).
When would I need to convert US gallon per minute to cubic foot 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. gpm (US) to ft³/min 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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