What is a Standard Drink in America?
The amount of liquid that is in a glass, bottle, or can do not necessarily match up to how much alcohol is in the drink. Different types of beer, wine, and spirits will have distinctive alcohol content. For example, the average beer will have around 5% alcohol, but some light beers can have around 4.2% alcohol, which is why it is important to know how much alcohol is being consumed. Typically, a 12-ounce beer will have around 5% alcohol; a five-ounce glass of wine will have around 12% alcohol, and 1.5 ounces of a distilled spirit will often have around 40% alcohol.
These types of beverages are defined in the United States as one standard drink, which is any beverage that contains 14 grams or .6 fluid ounces of pure alcohol. Because the alcohol market is always changing, the percentage of alcohol in each type of wine, beer or spirit will vary, depending on the brand and type.