Blood Alcohol Content (BAC) Calculator

Blood alcohol content (BAC), also called blood alcohol concentration or blood alcohol level is commonly used as a metric of alcohol intoxification. BAC levels represent the percent of a person's blood that is concentrated with alcohol. For instance, a BAC of .01 means that 1% of a person's bloodstream contains alcohol.  

In South Carolina, it is illegal to operate a vehicle with a BAC above .08 or 8%.
Drivers under the age of 21 are held to stricter standards under zero tolerance laws. In SC, the zero tolerance BAC limit is .02 or 2%.  

BAC Calculator
The BAC table below provides an accurate estimation of an individual's BAC at a certain period in time. However, like any other BAC table it cannot provide results with 100% accuracy due to the many variables (age, gender, weight, alcohol amount, alcohol percentage, time) utilized in determining one's BAC.  















See our Tips for Moderate and Sensible Alcohol Consumption page


Center for Drug & Alcohol Programs
67 President Street
MSC 861
Charleston, SC
(843) 792-2727