BAC Calculator

Please use the calculator to determine your approximate blood alcohol content, based on your weight, the amount of alcoholic beverage you drank, how strong the alcoholic beverage was, and the time you took to drink it.

The calculator is meant to show generally the effects certain drinks can have on your system, but is not meant to be a definitive test as to your breath alcohol concentration or whether you would be considered to be Driving Under the Influence (DUI) or Driving While Intoxicated (DWI) under the laws of your particular state. If you are arrested for a drunk driving offense, it is important to contact a qualified defense lawyer as soon as possible. Why not hire one of America’s DUI and DWI Defense Attorneys to represent you?

Content Calculator




Fluid Ounces




Alcohol Content

4% - 4.5%

15% - 20%

30% - 50%

Fluid Ounces Consumed Percent Alcohol
Your Weight (Lbs) Hours Consuming Drink
BAC Percentage
BAC Analysis