Calculate Blood Alcohol Concentration (BAC)

These links show how to calculate your blood alcohol concentration (BAC) after alcohol consumption. They will open in a new window.

• The Drink Wheel
  This calculator, supplied by Intoximeters, Inc., computes your BAC for any given drinking experience.
• Wisconsin DOT Blood Alcohol Calculator

Use this calculator to instantly compute your estimated blood/breath alcohol concentration.

• Bar Drinks Pack More Punch Than Thought (Health Day News Report)
  If you sidle up to a bar and assume one drink an hour won't make you legally drunk, think again. A new study finds that bartenders pack a lot more booze into common drinks than many people realize. Researchers visited 80 bars and restaurants in Northern California last year and found that glasses of wine and spirits are often 50 percent larger than the "standard" size used in guidelines. This can make it difficult to calculate how much alcohol you are actually consuming.