The United States measuring cups are not equal to the cup measurements used in other countries. This can lead to problems when you use a recipe from one country with the measuring equipment from another country. Just to give you an idea of how cups differ around the world … • 1 US legal cup (used in nutrition labeling) = 240 mL • 1 US standard cup (used in recipes) = 236.588 mL • 1 international metric cup = 250 mL • 1 imperial cup = 284.131 mL