BAC Calculator

Estimate blood alcohol content based on drinks consumed, weight, gender, and time elapsed.

Disclaimer: This calculator provides estimates only. Do not drive if you have been drinking.

Unit System

Metric (kg)Imperial (lbs)

Gender

Weight (kg)

Number of Standard Drinks

1 drink = 12oz beer, 5oz wine, 1.5oz spirits

Hours Since First Drink

About BAC Calculator

Estimate your Blood Alcohol Content (BAC) based on the number of drinks consumed, your weight, gender, and time elapsed. This is for educational purposes only. Never drink and drive.