A 750-milliliter bottle is a standard size for wine and spirits, equivalent to 25.4 fluid ounces. This volume represents a common unit of sale and is frequently used for portioning and recipes. It is roughly equivalent to a “fifth” (one-fifth of a US gallon), a term previously used for liquor bottles.
Standardization of bottle sizes benefits both consumers and producers. For consumers, the 750ml bottle provides a recognizable quantity, facilitating price comparisons and recipe scaling. For producers, it simplifies packaging, labeling, and distribution. This size became increasingly prevalent globally after the transition to the metric system, replacing various regional measurements. Understanding this standard unit aids in responsible consumption by allowing individuals to accurately assess the amount of alcohol being consumed.