Our website presents all the necessary information to understand the difference between liters and gallons and how to convert them.
Our aim is to help you to calculate by yourself how many liters are in a gallon or vice versa. We made pages with individual measurements for gallons and liters.
“Liter” is a unit of volume that is accepted for use with the International System of Units (SI) but is not technically an SI unit. Initially, the liter was defined as the volume of one kilogram of pure water at its maximum density at atmospheric pressure.
Liter is used to measure volumes of liquids but also to label the containers containing the mentioned liquids. At the same time, it is also used to measure some non-liquid volumes, such as backpacks, trunk size, and refrigerators, but also to express the volume and price of fuel in most countries around the world.
“Gallon” is a common unit of volume in the US and can be abbreviated as a gal. It refers specifically to the capacity of liquid in the US customary and imperial measurement systems.
We meet the American gallon, defined as 231 cubic inches (3.785 liters), but also the imperial gallon, used in the United Kingdom, Canada and some Caribbean nations, defined as 4.54609 liters.
The term “gallon” comes from Old North French, developing as a system for measuring wine and beer in England, resulting in measures such as the wine gallon, the beer gallon, and the imperial gallon.
Liters, liters and gallons are still used in the US, so below is a quick conversion table to help with metric conversions: