Each 12oz beer is worth .02 BAC. Your body gets rid of one beer an hour, or at an approximate rate of .02 an hour. So if you have 7 beers, it will take a total of 7 hours to have no Blood Alcohol Content (BAC).
If You Drank 7 Beers In 4 Hours How Long Would It Take For The Alcohol To Leave Your System?
28 hours