Cup (US Customary) to Cup (US Legal) Conversion Result

Cup (US Customary): the U.S. customary cup is a unit of volume widely used in cooking, baking, and everyday measurements in the United States. It is slightly smaller then U.S. legal cup and is equal to 236.588 milliliters.

Some Considerations:
  • In American recipes: Always assume the cup measurement refers to the U.S. customary cup unless stated otherwise.
  • For international recipes: Check if the recipe specifies metric cups or imperial cups, as these are common outside the U.S.


Cup (US Legal): in the U.S. legal system, the cup is defined as a unit of volume specifically for standardizing measurements in nutrition labeling and regulatory contexts. It differs slightly from the traditional U.S. customary cup used in everyday cooking and is equal to 240 milliliters.

The U.S. legal cup is often simply referred to as "cup" in nutrition labels, with no special abbreviation.