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UK Gallon (Imperial Gallon)
A UK gallon, also called an Imperial gallon, is a volume unit used primarily in the United Kingdom and some Commonwealth countries. It is larger than the US gallon, holding the equivalent of 4 quarts, 8 pints, or 160 fluid ounces. The Imperial gallon is still commonly used to measure fuel at petrol stations and in older beverage packaging.
Because the UK gallon is different from the US gallon, international conversions can be misleading if the type of gallon isn’t specified. Using a volume converter ensures accurate translation to liters, cups, or other measurement systems when comparing product sizes from different countries.
UK Gallons in Everyday Use
UK gallons remain important in contexts where tradition and established standards persist — especially with petrol, beer, and some industrial liquids. Travelers may encounter this unit when driving or shopping in the UK, where fuel efficiency is often expressed in miles per gallon using the Imperial value.
One Imperial gallon equals about 4.546 liters, which makes it noticeably larger than the US gallon. When you need to compare liquid volumes internationally or work with older measurement systems, converting UK gallons helps keep measurements clear and compatible with modern metric units.
