Blood Alcohol Concentration (BAC) Calculator
Estimate your blood alcohol concentration. This is for educational use only — never use a BAC estimate to decide whether to drive.
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1 standard drink = 14 g pure alcohol
Your results
- Status
- Over limit in many countries
BAC estimates are approximate. Never rely on a calculator to decide if you can legally drive — if you've been drinking, don't drive.
What is BAC?
Blood alcohol concentration (BAC) is the percentage of alcohol in your bloodstream. A BAC of 0.08% is the legal driving limit in most U.S. states and many countries.
Many factors affect actual BAC including food intake, medications, hydration, and individual metabolism. This calculator gives a rough estimate only.
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Frequently Asked Questions
How fast does alcohol leave the body?
About one standard drink per hour for most adults. There is no way to safely 'sober up' faster.