The cup is a customary unit of measurement for volume, used in cooking to measure liquids and bulk foods such as granulated sugar. Actual cups used in a household in any country may differ from the cup size used for recipes; standard measuring cups, often calibrated in fluid measure and weights of usual dry ingredients as well as in cups, are available.
Measuring cups are made from glass, plastic, aluminium or stainless steel. Different sizes are available for precise measuring. Measurements shown as cups, and spoons.
As a result of the fact that the imperial cup is actually out of use and the other definitions differ hardly, the U.S. measuring cups and metric measuring cups may be used as equal in practice.