A quarter cup is a unit of measurement used in cooking and baking to indicate a specific volume or amount of liquid, dry ingredients or other substances. It refers to one-fourth of a standard measuring cup which typically holds 2 tablespoons (30 ml) of liquid or 1/4 cup (60ml) in the metric system. The term can also be used as a synonym for "one fourth" when referring to fractions, such as one-fourth of an ingredient or recipe.