BAC Chart and Calculator

 

What is Blood Alcohol Content (BAC)

Blood Alcohol Content (BAC) or blood alcohol content concentration is the concentration of alcohol in blood. It is usually measured as mass per volume. For example, a BAC of 0.02% grams of alcohol per 100 grams of individual's blood, or 0.02 grams of alcohol per 100 gr

 

How To Calculate Your Estimated Blood Alcohol Content (BAC)

Showing estimated percent of alcohol in the blood by number of drinks in relation to body weight. This percent can be estimated by:

1. Count your drinks (1 drink equals 1 ounce of 100 - proof liquor, one five ounce glass of table wine or one 12 - ounce bottle of regular beer).
2. Use the chart below and under number of "drinks" and opposite "body weight" find the percent of blood alcohol listed.
3. Subtract from this number the percent of alcohol "burned up" during the time elapsed since your first drink. This figure is .015% per hour. (Example: 180 lb. man - 8 drinks in 4 hours / .167% minus (.015x4) = .107 %.