Illustration showing 1 drink = 12 oz. beer = 1.5 oz. of 80 proof hard liquor = 5 oz. glass wine

Standard Alcoholic Drink

Beer, wine, and hard liquor (distilled spirits) all contain alcohol. The following common alcoholic drinks contain equal amounts of alcohol by volume (ABV) and are considered one (1) standard drink:

  • One mixed drink containing 1.5 fl oz (44 mL) of 80-proof hard liquor, such as gin, whiskey, or rum equals about 40% ABV
  • One 5 fl oz (148 mL) glass of wine equals about 12% ABV
  • One 12 fl oz (355 mL) bottle of beer or wine cooler equals about 5% ABV

Proof is the amount of alcohol in hard liquor or distilled spirits. The percentage of pure alcohol in the hard liquor is usually one-half the proof. For example, a 100-proof liquor is about 50% pure alcohol. Thus, the higher the proof, the more pure alcohol the hard liquor contains.