Blood Alcohol Content Estimator

This estimator is a handy tool to help you anticipate your blood alcohol content (BAC) and make responsible decisions. Clearly, the figures are only approximate and have no legal value. They are to help you make the right decision, not make the decision for you.

Choose your gender

Male Female

Enter your weight

lbs kg    Please provide valid weight!

Select the number of drinks you have had

1 2 3 4 5 6 7 8 9

One standard drink is: 341 ml (12 oz.) of 5% beer, cider, or cooler; 142 ml (5 oz.) of 12% wine; or 43 ml (1.5 oz.) of 40% distilled spirits.

Select the number of hours since your first drink

less than 1 1 2 3 4 5 6 7 8 9

Your criteria:

Your BAC is Estimated as:

IMPORTANT: This BAC Estimate is a GUIDELINE ONLY.

Many factors can change your BAC level (e.g. food intake, medication, disease, individual characteristics, etc.) so this estimate is NOT conclusive for evaluating sobriety or intoxication. The BAC is only approximate and has no legal value. It is here to help you make the right decision, not make the decision for you.