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Volumetric Flow Rate

ft³/mintogph (US)

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

Factor1 ft³/min = 448.8312 gph (US)

Converter

ft³/min

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

Result
4488.31gph (US)

Rendered to 6 significant figures.

Formula

Formula
gph (US) = ft³/min × 448.8312

Multiply any value in cubic feet per minute by 448.8312 to obtain the value in US gallons per hour.

Worked example

Convert 10 ft³/min to gph (US).

  1. 01Start with 10 ft³/min.
  2. 02Multiply by the conversion factor: 10 × 448.8312 = 4488.31 gph (US).
Result10 ft³/min = 4488.31 gph (US)

Conversion table

ft³/mingph (US)
1448.83
2897.66
52244.2
104488.3
208976.6
5022442
10044883
20089766
5002.2442e+5
10004.4883e+5

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from ft³/min to gph (US)?
1 ft³/min equals 448.8312 gph (US). To convert, multiply the value in cubic feet per minute by 448.8312.
How do I convert 1 ft³/min to gph (US)?
1 ft³/min = 448.831 gph (US). For any value, multiply by 448.8312.
How do I convert gph (US) back to ft³/min?
Divide by the same factor — or equivalently, multiply by 0.002228009. So 1 gph (US) = 0.00222801 ft³/min.
When would I need to convert cubic foot per minute to US gallon 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. ft³/min to gph (US) 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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