How to Convert a Bottle (Fifth) to Cups

If you want to make a punch or sangria recipe for a party, you'll need to know how to figure out the number of cups in a standard bottle of alcohol before you head to the liquor store. Wine and liquor are often sold in "fifths," bottles that measure 1/5 gallon, or approximately 757 milliliters. By converting the amount in the bottle to cups, you will know how many bottles to buy to make your beverage recipe for a crowd.