Blood/Breath Alcohol Concentration (BAC) is the amount of
alcohol in the bloodstream or on
one's breath. BAC is expressed as
the weight of ethanol, measured in grams, in 100 milliliters of
blood, or 210 liters of breath. BAC can be measured by breath,
blood, or urine tests.
Minnesota defines legal intoxication for purposes of driving
as having a BAC of 0.08 or greater, in most cases. But alcohol
may affect driving skills at BACs of 0.05 or even lower.
Driving skills, especially judgment, are impaired in most
people long before they show signs of drunkenness. The public
usually associates BAC with "drunk driving." But it's
more accurate to refer to "alcohol-impaired" driving
because you do not have to be "drunk" to be impaired
in your ability to safely drive a car.
Use this calculator to instantly compute your estimated
blood/breath alcohol concentration.
Keep in mind the results generated are estimates.
The primary purpose is to provide information about the
responsible use of alcohol.
Instructions: Please select weight, drinks consumed, time period
and gender and click the "compute your BAC" button:
This BAC calculator is
enabled to work.
This calculator may not work with some older
How much alcohol you drink. All
drinks do not have the same alcohol content.
How fast you drink. In general, the quicker you drink, the
higher your peak BAC will be.
Type of mixer used. Water and fruit juices mixed with alcohol
may slow the absorption process, while carbonated beverages may
speed it up.
Women reach higher BACs faster 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.
Your actual BAC is dependent on many complex factors, including
your emotional and physical condition and health, and what you've
recently ingested (including food, water, medications and other
No blood/breath alcohol calculator is 100% accurate.
The best that can be done is a rough estimation of your BAC
You should not consider this to be a guideline for how much
you can drink and still drive responsibly, or avoid being arrested!
The best policy is don't drink and drive. Period.
NOTE: The information above and basic formula for estimating
a person's blood/breath alcohol concentration comes from the
National Highway Traffic Safety
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