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Volumetric Flow Rate

gph (US)toft³/min

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

Factor1 gph (US) = 0.002228009 ft³/min

Converter

gph (US)

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

Result
0.222801ft³/min

Rendered to 6 significant figures.

Formula

Formula
ft³/min = gph (US) × 0.002228009

Multiply any value in US gallons per hour by 0.002228009 to obtain the value in cubic feet per minute.

Worked example

Convert 100 gph (US) to ft³/min.

  1. 01Start with 100 gph (US).
  2. 02Multiply by the conversion factor: 100 × 0.002228009 = 0.222801 ft³/min.
Result100 gph (US) = 0.222801 ft³/min

Conversion table

gph (US)ft³/min
10.002228
20.004456
50.01114
100.02228
200.04456
500.1114
1000.2228
2000.4456
5001.114
10002.228

Reference values rounded to 5 significant figures for display.

FAQ

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