Alcohol–Blood Alcohol Calculator

Alcohol affects individuals differently. Your blood alcohol level may be affected by your age, gender, physical condition, amount of food consumed, and any drugs or medication. In addition, different drinks may contain different amounts of alcohol, so it's important to know how much they contain and the concentration of alcohol you consume.

Impairment begins with your first drink.
For safety's sake, never drive after drinking!

Check out our Blood Alcohol Calculator to see how alcohol affects your body and learn more about what the legal limits for Driving Under the Influence are in your State.

• FLUID OUNCES CONSUMED
  (Beer ~ 12 oz. Wine Glass ~ 4 oz. 1 shot ~ 1.5 oz)
• YOUR WEIGHT (lbs)
• ALCOHOL PERCENTAGE IN BEVERAGE
  (Beer ~ 4-4.5% Wine ~ 15-20% 1 shot ~ 30-50%)
• HOURS SINCE LAST DRINK

Fluid Ounces Consumed		Percent Alcohol
Your Weight (Lbs)		Hours Since Drink
Calculate Your BAC %
BAC Percentage
BAC Analysis

Information provided by the National Clearinghouse for Alcohol and Drug Information, a service of SAMHSA.