Details
BAC Results
Estimated BAC
4.921%
Status
Impaired — do not drive
Sober in approx.
3.3 hrs
⚠️ Disclaimer: This is an estimate only. Never drive if you have consumed alcohol. Individual BAC varies significantly based on metabolism, food intake, and other factors.
Frequently Asked Questions
What is the legal BAC limit for driving?
In the United States, the legal limit is 0.08% BAC for drivers 21+. Commercial drivers must stay below 0.04%. For drivers under 21, zero-tolerance laws set limits of 0.00–0.02%. Many countries have lower limits (0.05% in most of Europe).
How accurate is this calculator?
This is an estimate only. Actual BAC varies based on individual metabolism, food intake, medications, health conditions, and body composition. Never use a calculator to decide if you're safe to drive — if in doubt, don't drive.
How long does it take for BAC to drop?
The liver eliminates alcohol at roughly 0.015% BAC per hour, regardless of coffee, food, or exercise. To go from 0.15% BAC to zero takes about 10 hours. There's no way to speed up this process.
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