BAC Calculator - Measure Your Blood Alcohol Level
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This online blood alcohol content calculator is designed to compute your estimated
blood and breath alcohol concentration. Please keep in mind the results generated are estimates.
Instructions: Please select your body weight, number of drinks consumed, time period spent drinking, and your gender - then click the "compute your BAC" button:
Please see disclaimer
Note: This calculator may
not work with some older browsers that do not support
JavaScript.
What can affect your BAC?
How much alcohol you drink.
How fast you drink. In general, the quicker you drink, the
higher your peak BAC will be.
Body size: Large people tend to reach lower BACs than smaller
people, given the same amount of alcohol.
Food in your stomach: When there is food in your stomach,
alcohol is absorbed more slowly into the blood stream. The BAC
rises more rapidly when alcohol is consumed on an empty stomach, as
food helps dilute alcohol.
Type of mixer used: Water and fruit juices mixed with alcohol
may slow the absorption process, while carbonated beverages may
speed up alcohol absorption.
Gender differences:
Women are proven to reach higher Blood Alcohol levels more quickly than men. This is because they have less water
in their bodies and more adipose tissue (fat), which is not
easily penetrated by alcohol.
A man and a woman, with all other factors being equal, both
drinking the same amount of alcohol, will have different BAC
levels. Hers will be higher.
BAC Calculator Disclaimer
Your exact Blood Alcohol Level is dependent on many complex factors, including
your emotional state, physical condition, overall health, and what you've
ingested before, during, and after drinking (including food, water, medications and other
drugs).
No online blood or breath alcohol calculator or chart is 100% accurate, and the information provided is at best a rough estimation of your expected BAC level.
You should not rely on this tool as a guarantee for how much
you can drink and still drive below the legal limit of 0.08% in California for adults 21 years of age or over, and 0.01% for minors under the legal drinking age of 21.
The best policy is to avoid combining drinking and driving altogether. A cab ride is always a cheaper and safer option than risking a DUI arrest and / or drunk driving accident.
NOTE: The basic formula for estimating a person's blood/breath
alcohol content is provided by the National Highway Traffic Safety
Administration.
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