
Alcohol by volume, commonly abbreviated as ABV, is a standard, worldwide measure used to quantify the concentration of ethanol in an alcoholic beverage. It is expressed as a volume percentage and denotes the number of millilitres of pure, unadulterated ethanol present within a 100-millilitre volume of the solution. For this measurement to be standardized, it is conducted at a specific temperature, typically 20 degrees Celsius or 68 degrees Fahrenheit.
In practical terms, if a 100 mL beverage is labeled as having 5% ABV, it contains exactly 5 mL of pure alcohol. The remaining 95 mL consists of other constituents, such as water, flavorings, and other ingredients specific to that beverage. This standardized system allows for a consistent and universally understood method for indicating the alcoholic strength of a drink.
This measurement is distinct from other systems, such as alcohol proof, which is a different scale. In the United States, for instance, the proof number is simply double the alcohol by volume percentage. Therefore, a spirit that is 40% ABV would be classified as 80-proof. ABV remains the most common and globally recognized standard for labeling alcoholic content.


