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Volumetric Flow Rate

IGal/mintogph (US)

Convert Imperial gallons per minute (IGal/min) to US gallons per hour (gph (US)).

Factor1 IGal/min = 72.057 gph (US)

Converter

IGal/min

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

Result
720.57gph (US)

Rendered to 6 significant figures.

Formula

Formula
gph (US) = IGal/min × 72.057

Multiply any value in Imperial gallons per minute by 72.057 to obtain the value in US gallons per hour.

Worked example

Convert 10 IGal/min to gph (US).

  1. 01Start with 10 IGal/min.
  2. 02Multiply by the conversion factor: 10 × 72.057 = 720.57 gph (US).
Result10 IGal/min = 720.57 gph (US)

Conversion table

IGal/mingph (US)
172.057
2144.11
5360.28
10720.57
201441.1
503602.8
1007205.7
20014411
50036028
100072057

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from IGal/min to gph (US)?
1 IGal/min equals 72.057 gph (US). To convert, multiply the value in Imperial gallons per minute by 72.057.
How do I convert 1 IGal/min to gph (US)?
1 IGal/min = 72.057 gph (US). For any value, multiply by 72.057.
How do I convert gph (US) back to IGal/min?
Divide by the same factor — or equivalently, multiply by 0.0138779. So 1 gph (US) = 0.0138779 IGal/min.
When would I need to convert Imperial gallon 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. IGal/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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