BAC Calculator
Estimate your Blood Alcohol Content (BAC)
Disclaimer: This calculator provides estimates only. Actual BAC varies based on many factors. Never drink and drive. If you've been drinking, always use a designated driver, rideshare, or taxi.
015
1 standard drink = 12 oz beer, 5 oz wine, or 1.5 oz spirits
0 hrs12 hrs
Estimated BAC
0.046%
Minimal Impairment
Below legal limit but still affects judgment.
BAC Reference Levels
Legal Limit (all states)0.080%
Enhanced Penalties0.150%+
Commercial Drivers0.040%
Under 21 (Zero Tolerance)0.000% – 0.020%