There are 4 quarts in 1 U.S. gallon. In international locations where the liter is used as the standard measurement, approximately 4 liters equal 1 U.S. gallon.
One gallon is also the equivalent of 8 pints or 16 cups of liquid. There are 128 fluid ounces in a gallon.
The United States does not use the gallon measurement for dry goods. Gallons are used to describe liquid volumes. Liquid volumes measure how much space a liquid takes up inside a given container.
Depending on the weight of packaging, a standard US gallon weighs around 8 pounds. This weight can fluctuate depending on the temperature of the liquid.