A standard 750-milliliter bottle of champagne is 25.4 ounces, or six 4-ounce glasses when served as a cocktail or with a meal. A magnum of champagne is 1.5 liters and contains 12 four ounce servings. A jeroboam of champagne contains 24 four ounce servings, and is 3.08 liters.
A split of champagne is a quarter-sized bottle, and it contains two 4-ounce glasses. A pint of champagne is half of a standard bottle, and it contains three 4-ounce portions. Champagne is served chilled at 45 degrees Fahrenheit, which takes approximately 30 minutes in an ice bucket or three hours in the refrigerator.