Health & Fitness Calculators
Blood Alcohol Content (BAC) Estimator
Enter body weight, alcohol consumed, and time elapsed to estimate blood alcohol content using the Widmark formula.
How to use this tool
- 1Enter your sex, weight, and grams of alcohol consumed.
- 2Enter hours since your first drink.
- 3See the estimated BAC.
Frequently asked questions
Can I use this to decide if I'm safe to drive?+
No — never use this or any calculator to decide whether to drive. Individual metabolism varies enormously, and this is for education only, not a safety determination.