Gallon (UK) [gal (UK)]
The UK gallon, also known as the imperial gallon, is a unit of volume used primarily in the United Kingdom and some Commonwealth countries.
One UK gallon equals 4.54609 liters, which is larger than the US gallon (3.785 liters).
Summary:
1 UK gallon โ 4.546 liters
Used in the UK and some Commonwealth countries
Common for fuel, milk, and other liquid measurements