Blood Alcohol Content (BAC) Calculator
Estimate blood alcohol content from drinks consumed, body weight, and time elapsed.
Estimated BAC
0.036%
Impairment likely
This is a rough estimate only — actual BAC varies with metabolism, food intake, and other factors. Never use this to decide whether it's safe to drive.
Cómo funciona
Uses the Widmark formula, which factors in alcohol consumed, body weight, a sex-based distribution ratio, and the rate the body metabolizes alcohol over time (~0.015%/hour).
Is this accurate enough to decide if I can drive?
No — this is a rough estimate only. Actual BAC depends on many factors this calculator can't account for. Never use it to judge whether it's safe to drive.