Interactive BAC Calculator
HealthCalculate your Estimated Blood Alcohol Content (Widmark Formula).
Needed for bodily water ratio constants.
- 12 oz of regular beer (~5% ABV)
- 5 oz of wine (~12% ABV)
- 1.5 oz of 80-proof spirits/liquor (~40% ABV)
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How to Use 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%.
Enter your parameters
Configure the inputs for the Bac Calculator according to your specific needs.
View real-time results
The utility instantly processes your request and displays the calculated outputs directly in your browser.
Copy or Download
Click the copy icon next to the final output to instantly grab the result, or export it if applicable.