# Blood Alcohol Content Calculator

> Blood alcohol content calculator: estimate BAC from drinks, body weight, sex, and elapsed time using the Widmark formula. Free; do not drive after drinking.

- **Canonical URL:** https://boringtoolskit.com/blood-alcohol-content-calculator/
- **Category:** Health
- **Evidence level:** catalogue
- **Reviewed:** July 26, 2026
- **Last verified:** 2026-10-12
- **Privacy:** Inputs and results stay in this browser unless the page clearly labels an external request.

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