Blood Alcohol Content (BAC) Estimator
A rough educational estimate of blood alcohol content using the Widmark formula.
Blood Alcohol Content (BAC) Estimator
A rough estimate using the Widmark formula. For education only, never for driving decisions.
This is a rough educational estimate only — many factors affect real BAC. Never use this to decide whether it's safe to drive.
Features
- Widmark formula estimate
- Accounts for time elapsed
- Separate calculation for men and women
- Clear safety disclaimer included
How to Use
Enter your sex and weight.
Enter standard drinks consumed and hours elapsed.
Click Estimate BAC to see the rough estimate.
About This Tool
Blood Alcohol Content Estimator provides a rough, educational estimate of BAC based on standard drinks consumed, body weight, sex, and time elapsed, using the widely referenced Widmark formula. This is for educational awareness only and must never be used to judge whether it's safe to drive.
Frequently Asked Questions
No, absolutely not — this is a rough educational estimate only, and real BAC depends on many factors this tool cannot account for.
Roughly 14 grams of pure alcohol, which is about one 12oz beer, one 5oz glass of wine, or one 1.5oz shot of spirits.