BAC Calculator
Estimate your Blood Alcohol Content and time to sobriety based on drinks consumed.
0.00%
after 1 hour since 2 beers
Peak BAC
0.00%
Time to 0%
0 hrs
Condition
Safe
BAC Over Time
How BAC Works
Blood Alcohol Content (BAC) measures the percentage of alcohol in your bloodstream. It is influenced by your weight, gender, the type and amount of alcohol consumed, and the time elapsed since drinking.
This calculator provides estimates only. Do NOT rely on it to determine if you are safe to drive. When in doubt, don't drive.
The Widmark Formula
Where: A = Alcohol in grams, W = Body Weight (kg), r = Widmark Factor (0.68 for men), β = Elimination rate (0.015/hr), t = Hours elapsed.
Last Updated: February 2026
Disclaimer: This calculator provides estimates for educational purposes only. Actual BAC can vary based on many factors including food intake, medications, and individual metabolism. Never drink and drive.
About the BAC Calculator
This bac calculator estimates health and fitness metrics from your personal inputs. Calculate blood alcohol content based on drinks and body weight.
Use for personal wellness tracking and education. Consult a healthcare provider for medical advice.
Adjust the inputs above to model your specific scenario with the BAC Calculator.
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