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Volumetric Flow Rate

gph (US)toIGal/min

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

Factor1 gph (US) = 0.0138779 IGal/min

Converter

gph (US)

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

Result
1.38779IGal/min

Rendered to 6 significant figures.

Formula

Formula
IGal/min = gph (US) × 0.0138779

Multiply any value in US gallons per hour by 0.0138779 to obtain the value in Imperial gallons per minute.

Worked example

Convert 100 gph (US) to IGal/min.

  1. 01Start with 100 gph (US).
  2. 02Multiply by the conversion factor: 100 × 0.0138779 = 1.38779 IGal/min.
Result100 gph (US) = 1.38779 IGal/min

Conversion table

gph (US)IGal/min
10.013878
20.027756
50.06939
100.13878
200.27756
500.6939
1001.3878
2002.7756
5006.939
100013.878

Reference values rounded to 5 significant figures for display.

FAQ

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