This blood alcohol concentration (BAC) calculator will calculate your blood alcohol level.

Your BAC level is based on a complex interaction of weight, gender, alcohol consumed and time. Any amount of alcohol will impair your ability.

For this calculator, one drink is considered to be equal to 12 oz. of beer, 5 oz. of wine or 1.5 oz. of hard liquor.
Calculations are estimates based on Colorado law and are not sufficient evidence to be considered legal evidence.

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Disclaimer: This blood alcohol concentration (BAC) calculator is only an estimate and is not sufficiently accurate to be considered legal evidence. The calculations are averages. Individuals may vary in their personal alcohol tolerance. Food in the stomach, medications, health and psychological conditions are influencing factors. Many establishments that serve alcohol serve portions larger than the standard drink size. This BAC calculator has been provided by the Colorado Department of Transportation. CDOT
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