A standard drink contains 1/2 ounce of ethyl alcohol. The table below provides approximate standard drink equivalents.

Type of Alcohol Number of ounces in "one drink"

Beer or cooler 12

Microbrews 10

Malt liquor 8.5

Canadian beer 9

Ice beer 8

Ice malt liquor 6

Table wine 5

Fortified wine 3.5

Cordial, liqueur, or aperitif 2.5

Hard alcohol (80 proof) 1.5

Hard alcohol (100 proof) 1

Use this calcuator to calculate your Blood Alcohol Content after a certain number of drinks.

Select Your Gender
Weight in Lbs
Standard Drinks (see chart to the left)
Number of Hours

The Blood Alcohol Calculator is for information only. This conversion is only an estimation and should not be used to determine if you are capable of driving. Your actual Blood Alcohol Level may vary, depending upon many factors, including body type, sex, health status, and many others. Every effort is made to ensure that the results yielded by the Blood Alcohol Calculator are correct; however, do not rely upon this information to decide whether or not it is safe or lawful to drive. Because impairment may occur at any Blood Alcohol Level, the best practice is to not drink and drive. The only safe and legal option for those under 21 is to not use alcohol.