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Volumetric Flow Rate

gpm (US)toIGal/min

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

Factor1 gpm (US) = 0.8326742 IGal/min

Converter

gpm (US)

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

Result
83.2674IGal/min

Rendered to 6 significant figures.

Formula

Formula
IGal/min = gpm (US) × 0.8326742

Multiply any value in US gallons per minute by 0.8326742 to obtain the value in Imperial gallons per minute.

Worked example

Convert 100 gpm (US) to IGal/min.

  1. 01Start with 100 gpm (US).
  2. 02Multiply by the conversion factor: 100 × 0.8326742 = 83.2674 IGal/min.
Result100 gpm (US) = 83.2674 IGal/min

Conversion table

gpm (US)IGal/min
10.83267
21.6653
54.1634
108.3267
2016.653
5041.634
10083.267
200166.53
500416.34
1000832.67

Reference values rounded to 5 significant figures for display.

FAQ

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