Our Blood Alcohol Content (BAC) Calculator uses the Widmark Formula to estimate your blood alcohol level. By inputting your gender, weight, the number and type of drinks consumed, and the time elapsed, you can get an approximate BAC value. Please note this is for educational purposes only and should never be used to determine ability to drive.
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Blood Alcohol Content (BAC) Calculator
Estimate your blood alcohol concentration based on weight, gender, and drinks consumed using the Widmark Formula.
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Personal Stats
Drinks Consumed
Estimated BAC
Current Blood Alcohol Content
0.0354%
Buzzing
Feeling of well-being, exaggerated behavior, slight impairment.
Time to Sober
Estimated time until 0.00%
Based on avg metabolism (0.015%/hr)
Legal Limit Check
US Legal Limit (0.08%)UNDER LIMIT
0.00%0.08%0.16%+
Disclaimer
This calculator provides only an estimate based on the Widmark formula. Actual BAC depends on individual metabolism, food consumption, medications, and other factors. Do not rely on this calculator to determine if you are safe to drive. Never drink and drive.
About BAC Calculator
1
Enter Details
Input your gender and weight.
2
Add Drinks
List the drinks you have consumed.
3
Time Passed
Enter hours since your first drink.
Key Features
Widmark Formula
Uses the standard formula for BAC estimation.
Drink Types
Preset values for beer, wine, liquor, and cocktails.
Time to Sober
Estimates how long until you reach 0.00% BAC.
Frequently Asked Questions
No. This is an estimate only. Metabolism varies widely between individuals. Never drink and drive.
In many jurisdictions, 0.08% is the legal limit, but impairment begins much earlier.
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