Blood Alcohol Content (BAC) Calculator
Estimate your BAC. For educational purposes only. Do not use to determine if it is safe to drive.
How Impaired Are You, Really?
"Feeling fine" is not a reliable measure of intoxication. This calculator provides an *estimate* of your Blood Alcohol Content (BAC) based on the Widmark formula, a scientifically recognized method. It helps you understand how factors like your weight, gender, and the number of drinks you've had can impact your BAC level.
Disclaimer: This is for educational purposes only. Individual BAC levels can vary significantly due to metabolism, food intake, and other factors. This calculator is not a legal tool and should NEVER be used to determine if it is safe to drive.
How to Estimate Your BAC
To get your estimate, you'll need to provide:
- Body Weight and Gender: These are key factors in how your body processes alcohol.
- Number of "Standard" Drinks: A standard drink is roughly one 12 oz beer, one 5 oz glass of wine, or one 1.5 oz shot of liquor.
- Time Since First Drink: Your body metabolizes alcohol at a relatively constant rate, so time is a critical factor.
The calculator will provide an estimate of your current BAC level.
Frequently Asked Questions (FAQ)
Q: Why do gender and weight matter so much?
A: Alcohol is water-soluble. On average, women have a lower percentage of body water and a higher percentage of body fat than men of the same weight. This means that after consuming the same amount of alcohol, a woman will typically have a higher BAC. Similarly, a lighter person will have a higher BAC than a heavier person because the alcohol is concentrated in a smaller body mass.
Q: Does eating food affect my BAC?
A: Yes. Eating food, particularly before drinking, slows the absorption of alcohol into your bloodstream. This doesn't stop you from getting intoxicated, but it can result in a lower peak BAC. This calculator does not account for food intake.