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BAC Calculator — Free Online Tool
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BAC Calculator

Estimate Blood Alcohol Concentration (BAC) using the Widmark Formula

Widmark Formula: $\text{BAC} = \left[ \frac{\text{Alcohol Consumed in grams}}{\text{Body Weight in grams} \times r} \right] \times 100 - (\beta \times \text{Hours})$. Standard drink $\approx 14\text{g}$ pure alcohol. Enter your details below.
Consumption Parameters Input

Calculation Results

⚠️ Safety Notice: For educational and awareness purposes only. Never drive or operate machinery after consuming alcohol. Actual BAC varies based on metabolism, food intake, and body composition.

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