Health & Fitness
Blood Alcohol Calculator
Estimate blood alcohol content and impairment level.
Formulas and edge cases are reviewed against authoritative references before publication. For methodology, editorial standards, or corrections, use the links below.
Frequently asked questions
What is a standard drink?
A standard drink contains about 14 grams of pure alcohol.
Is this legally accurate?
No. BAC varies by individual and circumstances. Use it only as a guide.
Does it include food?
No. Food can affect BAC; this calculator does not account for it.
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About this tool
This Blood Alcohol Calculator turns your inputs into practical results. Provide Weight, Sex, and Standard drinks to calculate Estimated BAC and Status.
Adjust values to compare scenarios and see how sensitive the result is. The calculation uses the numbers as entered, so double-check units and expect small differences from rounding in the displayed totals.