About BAC Calculator
Your trusted tool for estimating Blood Alcohol Content. Simple, accurate, and free.
What is BAC?
BAC (Blood Alcohol Content) shows how much alcohol is in your blood. It's measured as a percentage. For example, 0.08% BAC is the legal limit in most US states.
How Our Calculator Works
Our BAC calculator uses the Widmark formula. It takes your weight, gender, drinks, and time to give you an estimated BAC level. It's the most accurate online tool available.
Alcohol Metabolism
Your body breaks down alcohol at about 0.015% per hour. Our calculator shows you how long it takes to get back to 0.00% BAC. Remember: time is the only way to sober up.
Safety First
This is an estimation tool only. Never drink and drive. Call a cab, use a ride service, or have a designated driver if you've been drinking.
Important Notice
BAC calculations are estimates only. Many factors affect your alcohol tolerance:
- Food in your stomach
- Medications
- Sleep and fatigue
- Overall health
When in doubt, don't drive. Your safety comes first.