BAC by Weight Calculator

Estimate BAC from body weight, drink count, drink type, and elapsed time.

Enter Values

Gender

Body Weight

Weight Unit

Drinks Consumed

Drink Type

Time Elapsed Hours

Enter values above and click Calculate to see your result.

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BAC estimate follows a Widmark style model adjusted for body water and time.

The calculator estimates alcohol concentration from standard drinks and subtracts alcohol metabolized over time.

Body weight 180, drinks 3, elapsed time 2 gives an estimated BAC.

No. This is an educational estimate and must not be used for legal or driving decisions.

Actual BAC varies due to metabolism, food intake, medications, and many individual factors.

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I can help you understand the bac by weight calculator formula, interpret your results, and answer follow-up questions.

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