BAC Calculator
Estimates blood alcohol concentration from drinks consumed, using the Widmark equation.
How this calculator works
Widmark equation: BAC% = alcohol (g) ÷ (body weight (g) × r) × 100 − 0.015 × hours, with distribution ratio r = 0.68 (men) / 0.55 (women) and an average elimination of 0.015%/hour. One US standard drink is 14 g of pure alcohol.
For education only, not medical advice. Talk to a healthcare professional about results that concern you.
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