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Calculate BAC

The information contained on this page is intended for general informational purposes only and is not intended to be nor should it be taken or relied upon as legal advice or factual advice concerning how much alcohol any individual can consume without exceeding any legal limit for anything or whether anyone who has consumed any specific quantity of alcohol is impaired or intoxicated. NCDD expressly disclaims any information on this page as sufficient to be relied upon in making any legal and factual decision. NCDD makes no representation or warranty that the calculations, which are provided and done by a third party, are accurate. If you want information on which you can rely in deciding how to act, now or in the future, you should consult a lawyer or appropriate experts in toxicology, pharmacology, or other disciplines. If you need legal assistance or advice, consult a lawyer in your state. You can find NCDD member lawyers in your State listed under "Find an Attorney" in the menu to the left or at the top of the page. None of the information on this page represents the opinion or views of the NCDD.

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(1) This guide below shows, for a given individual, the DMV's best guess as to what the breath test results would be for a given amount of drinking. There are so many variables in the formula used to calculate breath test results based upon weight and number of drinks consumed that it has limited utility as a way to precisely determine an individual's breath alcohol concentration.

(2) One drink=1 ounce of 80 proof spirits; 3 ounce glass of wine; or 8 ounce glass of 5% beer.

Explanation of gender differences in Blood Alcohol Concentration)

Blood Alcohol Concentration Chart for Males (1)
(Alcohol % in bloodstream for weight (lbs) and number of drinks)

California Dui Defense Attorney

Blood Alcohol Concentration Chart for Females(1)
(Alcohol % in bloodstream for weight (lbs) and number of drinks)

California Dui Defense Attorney