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BAC Calculator

Estimate blood alcohol content using the Widmark formula. For educational purposes only.

Educational purposes only. BAC estimates are approximations. Never drink and drive. Impairment can occur well below legal limits.

Gender

Weight

Unit

Hours Since First Drink

Drinks Consumed

Estimated BAC

Hours Until Sober

Legal Limit (US)

Peak BAC (before metabolism): . Widmark formula. Individual results vary significantly.

Your files are processed securely and automatically deleted after 1 hour. We never store or share your data.

About BAC Calculator

Our free BAC Calculator helps you run quick, accurate calculations for everyday financial and mathematical needs with just a few inputs. Estimate blood alcohol content using the Widmark formula. For educational purposes only. Enter your values, and the calculator instantly shows detailed results with breakdowns you can understand. No signup, no ads interrupting your workflow — just accurate, reliable calculations you can trust. Works on any device, saves nothing to our servers.

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