BAC Calculator
Calculate blood alcohol content estimation
Personal Information
Alcohol Consumption
BAC Estimate
0.000%
Sober
Below legal limit
Estimated Effects:
- •No effects from alcohol
Time Until Sober0 hours
Estimated time until BAC returns to 0.00%
Important Notice:
This calculator provides rough estimates only. Actual BAC can vary significantly based on many factors. Never drink and drive, regardless of estimated BAC. Always have a designated driver or use a ride service.
Understanding BAC
What Affects BAC
- • Body weight and composition
- • Gender differences in metabolism
- • Rate of consumption
- • Food in stomach
- • Type and strength of alcohol
- • Individual tolerance
Standard Drink Sizes
- • Beer (12 oz, 5% ABV)
- • Wine (5 oz, 12% ABV)
- • Spirits (1.5 oz, 40% ABV)
- • Malt Liquor (8-9 oz, 7% ABV)
Safety Information
Legal Limits
- • 0.08% - Most US states
- • 0.05% - Some countries
- • 0.02% - "Zero tolerance"
- • Commercial drivers: 0.04%
Safe Drinking
- • Pace your drinks
- • Stay hydrated
- • Eat before drinking
- • Know your limits
- • Plan transportation
Emergency Signs
- • Confusion
- • Vomiting
- • Seizures
- • Slow breathing
- • Unconsciousness