Imperial Gallon to Us Gallon Converter
Enter a value in imperial gallon and get the equivalent in US gallon instantly. The calculator uses the standard unit relationship and runs directly in your browser.
Imperial Gallon → Us Gallon
Formula
This conversion page is dedicated to the imperial gallon-to-US gallon direction so the unit relationship, reverse path and examples are easy to find. For scale-factor units, XpressCalculator converts through the domain base unit using internationally recognized unit definitions. Temperature scales use their standard offset-and-scale equations rather than a simple multiplier.
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Starting with 1 imperial gallon (imp gal), the converter returns 1.2009499255 US gallon (US gal). For any other value, enter the number above and the browser recalculates the result immediately.
Quick conversion table
| Imperial Gallon | Us Gallon |
|---|---|
| 1 imp gal | 1.2009499255 US gal |
| 5 imp gal | 6.0047496275 US gal |
| 10 imp gal | 12.009499255 US gal |
| 25 imp gal | 30.0237481376 US gal |
| 50 imp gal | 60.0474962752 US gal |
| 100 imp gal | 120.0949925505 US gal |
Helpful guide
Unit conversions are most reliable when the source value and unit are identified correctly. Do not confuse similarly named US customary and imperial units, and keep significant figures appropriate to the precision of the original measurement. For engineering, scientific, medical or safety-critical work, confirm the measurement standard required by your application.
Use sensible precision and verify critical decisions with an authoritative source or qualified professional.
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How do I convert imperial gallon to US gallon?
Multiply the imperial gallon value by 1.2009499255 to get US gallon. This page performs the conversion instantly and shows the relationship clearly.
Is this imperial gallon to US gallon conversion exact?
The mathematical unit factor is applied directly. Displayed results may be rounded for readability, so retain more digits when high precision matters.
Can I reverse the conversion?
Yes. Use the linked US gallon to imperial gallon converter to reverse the direction without re-entering the formula manually.