500 milliliters (ml) of water is equivalent to approximately 2.11 cups. This is based on the standard conversion where 1 cup is equal to 240 milliliters. To convert milliliters to cups, divide the volume in milliliters by 240. For example, 500 ml ÷ 240 ml per cup = 2.08 cups, which is approximately 2.11 cups when rounded. Keep in mind that different countries may use slightly different measurements for a “cup,” but the 240 ml value is commonly used in the United States.