Use this free BAC Calculator to check your bac in seconds — accurate, private, and easy to use.
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Blood alcohol content is estimated with the Widmark formula — (standard drinks × 14 × 5.14) ÷ (body weight × a sex-based distribution ratio) − 0.015 × hours elapsed — a long-established formula for estimating BAC, though individual results vary with metabolism, food intake, and other factors. This is an educational estimate only; never use it to decide whether it’s safe to drive.
Use this free BAC Calculator to check your bac in seconds — accurate, private, and easy to use.
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