BAC Calculator
Calculate Your BAC
Your BAC Results
Current BAC
0.000%
Under legal limit
Peak BAC
0.000%
Maximum level reached
Time to Sober
0h
Until BAC < 0.01%
BAC Over Time
Legal Information
Legal Limits
- For drivers 21 and older: 0.08% BAC is the legal limit
- For drivers under 21: Limits vary by state (0.01% - 0.05%)
- Commercial drivers: 0.04% BAC limit
Important Notes:
- This calculator provides estimates only
- Actual BAC may vary based on many factors
- Never drink and drive, regardless of calculated BAC
- Always have a designated driver or use a ride service
Standard Drinks Guide
Beer (Regular)
Alcohol: 5.0%
Volume: 355ml
Standard Drinks: 1
12 oz of regular beer (5% alcohol)
Beer (Light)
Alcohol: 4.2%
Volume: 355ml
Standard Drinks: 0.85
12 oz of light beer (4.2% alcohol)
Wine
Alcohol: 12.0%
Volume: 148ml
Standard Drinks: 1.2
5 oz of wine (12% alcohol)
Spirits
Alcohol: 40.0%
Volume: 44ml
Standard Drinks: 1.5
1.5 oz of 80-proof spirits (40% alcohol)