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Volumetric Flow Rate

IGal/hrtogph (US)

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

Factor1 IGal/hr = 1.20095 gph (US)

Converter

IGal/hr

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

Result
120.095gph (US)

Rendered to 6 significant figures.

Formula

Formula
gph (US) = IGal/hr × 1.20095

Multiply any value in Imperial gallons per hour by 1.20095 to obtain the value in US gallons per hour.

Worked example

Convert 100 IGal/hr to gph (US).

  1. 01Start with 100 IGal/hr.
  2. 02Multiply by the conversion factor: 100 × 1.20095 = 120.095 gph (US).
Result100 IGal/hr = 120.095 gph (US)

Conversion table

IGal/hrgph (US)
11.2009
22.4019
56.0047
1012.009
2024.019
5060.047
100120.09
200240.19
500600.47
10001200.9

Reference values rounded to 5 significant figures for display.

FAQ

What is the conversion factor from IGal/hr to gph (US)?
1 IGal/hr equals 1.20095 gph (US). To convert, multiply the value in Imperial gallons per hour by 1.20095.
How do I convert 1 IGal/hr to gph (US)?
1 IGal/hr = 1.20095 gph (US). For any value, multiply by 1.20095.
How do I convert gph (US) back to IGal/hr?
Divide by the same factor — or equivalently, multiply by 0.8326742. So 1 gph (US) = 0.832674 IGal/hr.
When would I need to convert Imperial gallon 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. IGal/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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