« Blood Alcohol Concentration


The best way to estimate your blood alcohol concentration, without the use of a breathalyzer, is by the use of charts that have been developed to serve as a general guide to blood alcohol concentration. Keep in mind, these charts are made for the general population - everybody reacts differently to alcohol, so factors like general health and the body's metabolism will have a significant affect, and can therefore cause quite a variance.

Those prone to higher blood alcohol concentrations are:

  • Individuals in poor health, especially those with poor livers
  • Females, especially those with low body weight
  • Males with low body weight

The reason why females and low-body-weight males are prone to higher blood alcohol concentration is because they will generally have less blood volume to dilute the alcohol, as well as a lesser capacity to break the alcohol down in the same amount of time as a male or heavier female.

« Blood Alcohol Concentration Charts

NB: The charts you will be using are only guides. Do not use information from this chart to decide whether to drive after drinking! The safest blood alcohol concentration for driving is zero!

Using the blood alcohol concentration chart to calculate your estimated blood alcohol content requires four pieces of information - your gender, your weight, how many drinks you have had and how much time has elapsed since your first drink. The charts differ for males and females, so click the appropriate link below.

Female Blood Alcohol Concentration Chart

Male Blood Alcohol Concentration Chart



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Random Facts about Alcohol

Almost 76 million Americans (about 43% of adults) have had exposure to alcoholism. This includes those who grew up with or married an alcoholic or a problem drinker or had a blood relative who was ever an alcoholic or problem drinker.

National Center For Health Statistics {NCHS}, Advance Data, USDHHS, No. 205, 9/30/91, p. 1


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The information contained in this document is for informational purposes only. Blood Alcohol.info makes every effort to maintain accuracy in the information on this site. If you find errors, please let us know through our contact form and we will fix the issue quickly. If you feel you are addicted, please seek medical attention, therapy or group interaction for assistance.