BAC Calculator

This BAC calculator estimates the Blood Alcohol Concentration (BAC) level, given body weight, time elapsed, and amount of alcohol consumed.

Gender:

Body Weight:

Time Since First Drink:

hours

minutes

Amount of Alcohol Consumed:

Amount:

beer

Size:

ABV:

wine

liquor

other

How to Use the BAC Calculator

Select your gender.
Enter the body weight in pounds (lbs) or kilograms (kg).
Input the time in hours and minutes since you started drinking.
Enter the amount of alcohol or standard drinks you have consumed, such as beer, wine, liquor, and others.
Select the size and ABV percentage for each drink.
Once all information is entered, click the 'Calculate' button.
As a result, the tool shows your estimated BAC level or the approximate percentage of alcohol in your bloodstream.
In addition, it also estimates how many more hours it may take for your BAC to drop to 0%.