What volume does a standard Champagne bottle contain?

A standard Champagne bottle contains 750 millilitres of wine.

This is the same nominal volume used for a standard bottle of still wine, but Champagne bottles are heavier and stronger because they must withstand internal carbon-dioxide pressure. The bottle shape also helps accommodate the sparkling wine, its thick glass, and its deep punt.

Champagne producers use several larger and smaller formats. A half bottle generally holds 375 millilitres, while a magnum holds 1.5 litres, equivalent to two standard bottles. Larger formats include the jeroboam, methuselah, salmanazar, and nebuchadnezzar, although naming conventions can vary between wine regions.

Bottle size can influence maturation. Larger bottles usually have a lower ratio of wine surface area to oxygen exposure, and many wine professionals regard magnums as especially favorable for extended aging. Regardless of format, the 750-millilitre bottle remains the standard reference size for Champagne retail and service.