What is the legal definition of an imperial gallon in litres?
An imperial gallon holds exactly 4.54609 litres by legal definition today.
Questions about Gallon
Short answers, pulled from the story.
When did Britain abolish all other gallons in favor of the imperial gallon?
Britain abolished all other gallons in favor of the imperial gallon in 1824.
Which countries use the US gallon system for fuel sales?
Six countries use the US gallon system: Haiti, Marshall Islands, Federated States of Micronesia, Palau, Liberia, and the United States itself.
When did the European Union remove the gallon from its list of legally defined primary units?
The European Union removed the gallon from its list of legally defined primary units effective the 31st of December 1994 under directive 80/181/EEC.
How many fluid ounces are in one imperial gallon compared to a US gallon?
One imperial gallon contains exactly 160 fluid ounces compared to 128 in a US gallon.