What Volume of Quarts Makes a Half Gallon?
Two quarts comprise a half-gallon. Whether you are measuring volume using the U.S. or British Imperial System, a gallon comprises 4 quarts.
While there are two quarts in a half-gallon in both the U.S. and British Imperial systems, the actual amount in a half-gallon varies somewhat between the two systems. A half-gallon in the United States is 1.89 liters, but the imperial equivalent is 2.27 liters. In the United States, milk is commonly offered in a half-gallon plastic jug, but the closest similar container in the United Kingdom is most likely the 2-liter bottle.