BAC Estimator
Understand how alcohol affects your body over time.
BAC Calculator
Widmark Formula Estimation. Do not rely on this for driving.
Beer (12oz)
Wine (5oz)
Shot (1.5oz)
Enter details to estimate alcohol level.
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Understanding BAC
Blood Alcohol Content (BAC) is a measure of alcohol in your blood. A BAC of 0.10 means that 0.1% of your bloodstream is composed of alcohol.
In most jurisdictions, the legal limit for driving is 0.08%. However, impairment begins well below this limit, affecting judgment and reaction time.
Metabolism & Safety
The body metabolizes alcohol at a constant rate (approximately 0.015% per hour), regardless of coffee, showers, or other myths. Time is the only way to sober up.
This calculator uses the Widmark Formula for estimation. Actual BAC depends on metabolism, food intake, and medications. Never drink and drive.