BAC Calculator

Estimate your Blood Alcohol Content (BAC) using the Widmark formula.

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Gender

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Female

Body Weight

Time Since First Drink (Hours)

h

Minutes

m

Drink Type	Quantity	Serving Size	ABV %
Beer
Wine
Liquor

Levels Guide

Enter your data to estimate your current blood alcohol concentration level.

0.01–0.05%Mild Relaxation

0.06–0.10%Impaired

0.11–0.20%Significant

0.21–0.30%Severe

0.31%+Life Threatening

Legal driving limit in most US states: 0.08%

This tool is for educational purposes only. Metabolism varies greatly between individuals. Never drive if you have been consuming alcohol.

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BAC Calculator

Alcohol Consumed

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