Convert Imperial Gallons to GallonsHow many gallons are in an imperial gallon? Easy imp gal to gal conversion.
1 Imperial Gallon ≈
1.2009499 U.S. Gallons
Imperial GallonsAn Imperial gallon is a unit of volume sometimes used in the British commonwealth. It is exactly 4.54609 liters and is about 20% larger than a U.S. gallon.
Abbreviation: imp gal
GallonsA U.S. gallon is a unit of volume equal to 128 U.S. fluid ounces, or about 3.785 liters. It should not be confused with the imperial gallon used in the United Kingdom.
Common abbreviations: gal, US gal