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BAC Calculator
SaúdeCalculate your Estimated Blood Alcohol Content (Widmark Formula).
ttb run bac-calculator
Needed for bodily water ratio constants.
lbs
hr
What is a Standard Drink?
- 12 oz of regular beer (~5% ABV)
- 5 oz of wine (~12% ABV)
- 1.5 oz of 80-proof spirits/liquor (~40% ABV)
Estimated Blood Alcohol Content
0.042 %
Legal Limit US/UK/CA is typically 0.08%
Expected Effects & Impairment
Buzz. Lowered inhibitions, minor impairment of reasoning, memory, and vision.
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Como usar BAC Calculator
Enter your gender, body weight, the number of standard drinks consumed, and the time elapsed since your first drink. The calculator estimates your Blood Alcohol Content (BAC) using the Widmark formula. It also projects how long until your BAC returns to 0.00%.
1
Enter your parameters
Configure the inputs for the Bac Calculator according to your specific needs.
2
View real-time results
The utility instantly processes your request and displays the calculated outputs directly in your browser.
3
Copy or Download
Click the copy icon next to the final output to instantly grab the result, or export it if applicable.
Perguntas frequentes
What is the legal BAC limit?+
In the US, the legal limit for driving is 0.08% BAC in all 50 states (0.04% for commercial drivers). Many countries set the limit at 0.05% or even 0.02%. Some have zero-tolerance policies.
How accurate is this estimate?+
BAC calculators provide rough estimates based on statistical averages. Actual BAC depends on many factors including food intake, metabolism, medications, hydration, and liver health. Never use a calculator to decide if you're safe to drive - when in doubt, don't drive.