Blood Alcohol Content (BAC) Calculator
Estimate your BAC level based on drinks consumed. For educational purposes only — individual variation is significant.
DRINKS CONSUMED
Frequently Asked Questions
What is the legal BAC limit for driving in the US?
0.08% in all 50 states for drivers 21+. For drivers under 21, most states enforce a 0.02% limit (zero-tolerance). For commercial drivers: 0.04%. Even at 0.05%, studies show measurable impairment.
How long does it take for BAC to return to zero?
BAC drops at approximately 0.015% per hour. At 0.10% BAC, it takes about 6-7 hours to reach zero. Drinking coffee, water, or exercising does NOT accelerate this — only time metabolizes alcohol.
Runs entirely in your browser — no data sent anywhere. All free tools · Etsy Shop ↗