How many litres in 400 gallons [US, liquid]?

A gallon [US, liquid] is a unit of volume commonly used in the United States to measure liquids. One US gallon is defined as 3.785 liters.

Gallons are commonly used to measure the volume of liquids in the United States, particularly to measure the volume of

Dairy products are often measured in gallons in the United States.

Pools and aquariums are often measured in gallons.

Bottles and cans of milk, icecream, juice, soda, etc. may be labeled with their volume in gallons.

Some recipes, especially in older cookbooks, may call for measurements in gallons.

A litre is a metric unit of volume. It is equal to 1000 cubic centimeters (cc) or 1 cubic decimeter (dm3). One litre is also equal to 0.001 cubic meters (m3).In practical terms, a litre is roughly equal to the volume of one kilogram of water, or the volume of a cube with each side 10 centimeters (or 0.1 meters) long. It is commonly used to measure the volume of liquids and gases and is often abbreviated as "L" or "l".

For instance, a typical bottle of soda or water that you might buy in a store might contain 500 millilitres (ml) or 0.5 litres of liquid. A car's gas tank may hold 50 litres, and a large container of cooking oil may hold 5 litres.

Examples of things that are measured in terms of liters

A standard-sized bottle of soda or water
A small flower vase
A carton of milk
A large yogurt container
A medium-sized saucepan
A large glass measuring cup