mL to Cups Converter

Milliliters and cups both measure volume, but they belong to different measurement conventions. This calculator converts between milliliters and US customary cups using 236.5882365 milliliters per US cup. To convert mL to cups, divide the milliliter value by that factor. To convert cups to mL, multiply the cup value by the same factor. The calculator supports both directions for recipe preparation and scaling. A milliliter is one thousandth of a liter and belongs to the metric system. It is widely used on food packaging, measuring jugs, and recipes around the world. A US customary cup is defined as one-half US pint, or eight US fluid ounces. The precise factor is useful when scaling formulas, while many kitchens use a practical rounded value of 237 mL or sometimes 240 mL. Follow the convention stated by the recipe when exact consistency matters. Cup sizes are not universal. A metric cup is exactly 250 mL, an Australian legal cup is also 250 mL, and older or regional recipes may use other definitions. This tool specifically labels its result as US cups to prevent an apparently small difference from becoming an unnoticed source of error. The difference can matter when a recipe is multiplied for a large batch or when the ratio of ingredients is sensitive. For example, 236.5882365 mL equals exactly one US cup under the selected definition. Half a US cup is 118.29411825 mL, and two US cups equal 473.176473 mL. A common 500 mL container holds about 2.11337642 US cups. Keeping several decimal places makes the mathematical conversion reproducible, but ordinary measuring cups may not support that level of physical precision. Volume and weight are different quantities. Converting a cup of flour, sugar, butter, or water into grams requires the ingredient's density and often a preparation method such as scooping or packing. This calculator changes only volume units, so it should not be used as a universal cups-to-grams converter. For best cooking results, use a kitchen scale when a recipe provides mass. Use the calculator when adapting international recipes, checking package quantities, scaling batches, comparing measuring vessels, or documenting liquid amounts. Choose the direction that matches the known value, enter the amount, and convert. Round the displayed result to the resolution of your equipment, and verify whether the source recipe means a US cup or a 250 mL metric cup before measuring.