One magnum of champagne equals this many standard bottles
[DOC] [TLE] Champagne Bottle Size Guide | The Champagne Company [PAR] A standard Champagne bottle contains 75cl of Champagne giving you 
approximately 6 to 8 glasses of ... Magnum 150cl 2 Standard Bottles Serves 
Approx 12 [DOC] [TLE] Wine Bottle Sizes - The Wrath of Grapes [PAR] Holds 375 ml or one half of the standard bottle size.