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Volumetric Flow Rate

ft³/hrtogph (US)

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

Factor1 ft³/hr = 7.480519 gph (US)

Converter

ft³/hr

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

Result
74.8052gph (US)

Rendered to 6 significant figures.

Formula

Formula
gph (US) = ft³/hr × 7.480519

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

Worked example

Convert 10 ft³/hr to gph (US).

  1. 01Start with 10 ft³/hr.
  2. 02Multiply by the conversion factor: 10 × 7.480519 = 74.8052 gph (US).
Result10 ft³/hr = 74.8052 gph (US)

Conversion table

ft³/hrgph (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 ft³/hr to gph (US)?
1 ft³/hr equals 7.480519 gph (US). To convert, multiply the value in cubic feet per hour by 7.480519.
How do I convert 1 ft³/hr to gph (US)?
1 ft³/hr = 7.48052 gph (US). For any value, multiply by 7.480519.
How do I convert gph (US) back to ft³/hr?
Divide by the same factor — or equivalently, multiply by 0.1336806. So 1 gph (US) = 0.133681 ft³/hr.
When would I need to convert cubic foot per hour 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/hr 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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