What unit of volume is equal to 3.785 liters?

One U.S. gallon is equal to approximately 3.785 liters. This is the standard liquid gallon used in the United States, where it contains 128 U.S. fluid ounces or 8 U.S. pints.

The figure is usually written more precisely as 3.785411784 liters, so 3.785 liters is a rounded conversion. Gallons are still widely used in the United States for fuel, beverages, and other liquids, while most countries use liters.

A common mix-up is the imperial gallon, used historically in Britain and still seen in some countries. An imperial gallon is larger: about 4.546 liters. Thus, when a question gives 3.785 liters, it specifically points to the U.S. gallon rather than the imperial unit.