Volume conversions use cubic metre as the reference unit. US liquid units, metric litres, and cubic units are converted with fixed factors stored in the unit table.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-05-21.
About These Units
cup (US) [cup US]
Definition
The US cup is a cooking volume unit equal to 236.5882365 milliliters.
History
Cup measures developed from household cooking measures and were standardized for recipes.
Current use
US cups are used in recipes, nutrition labels, baking, meal preparation, and kitchen measuring tools.
milliliter [mL]
Definition
The milliliter is a metric volume unit equal to one thousandth of a liter.
History
Milliliters follow metric prefix scaling and are convenient for small liquid amounts.
Current use
Milliliters are used for medicine, cooking, beverages, lab work, cosmetics, and product labels.