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Estimate Your Blood Alcohol Level

In Minnesota, you're too intoxicated to drive if you have a blood-alcohol concentration (BAC) level of 0.08 or greater, measured within two hours of driving. You may also be arrested if ANY amount of alcohol affects your driving conduct. If you get pulled over and your blood-alcohol level tests above the legal limit or you refuse to test, you'll be arrested for DWI.

This calculator will give you some idea of what your blood-alcohol content could be if you drank a specific number of drinks over a certain time period. This is just an approximation - the calculator has to make certain assumptions, such as drinking the alcohol on an empty stomach. If you eat while you drink, the alcohol is absorbed more slowly into your bloodstream.

Alcohol effects everyone differently. Of course, if you don't normally drink, a single beer could make you unsafe to drive. Generally, by the time you start feeling intoxicated, you're well past the legal limit.

The more you weigh, the more you'd have to drink to be considered intoxicated. Consider this: A 220 pound male could drink five beers in an hour and still not be legally intoxicated in Minnesota. His blood-alcohol content would be 0.0758. If a 140-pound man drank the same amount, his blood-alcohol content would be 0.1260 - well over the legal limit. Gender also effects your blood-alcohol content.

The slower you drink, the more time your body has to metabolize the alcohol. Each hour you add takes 0.012 off your blood-alcohol content, according to the formula used by this calculator.

The above information is not intended as legal advice or to apply to all situations or facts specific to your case. Certain factors may affect test results and make people more or less susceptible to be influenced by alcohol, including but not limited to personal biology, acquired tolerance, various medical conditions, and medications. 

     Alcohol Percentage (est.):
  • LIGHT BEER: 3.0 percent
  • BEER: 3.5 percent
  • BEER - MICROBREW: 6.0 percent
  • WINE: 12-18 percent
  • CHAMPAGNE: 15-20 percent
  • SHOT HARD ALCOHOL: 30-50 percent

     Ounces Consumed (est.):

  • ONE BEER: 12 ounces
  • ONE WINE: 4 ounces
  • ONE SHOT: 1.5 ounces
  • ONE MIXED DRINK: 2 ounces
  • ONE DRY MARTINI: 2 ounces

 

B.A.C. Estimator*

A person's blood-alcohol level is the result of an interaction of their weight, gender, alcohol consumed and time.

Weight  pounds

Consumed drinks
(12 ounces beer or equivalent)

Over  hour(s)
 

Gender  



 
B.A.C. Result:
 
*The basic formula for estimating blood-alcohol concentration comes from the National Highway Traffic Safety Administration. Each drink in this calculation assumes a volume of of .54 ounces of alcohol (1 shot of distilled spirits, a glass of wine, or 12 ounces of beer).

 

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Last modified: 12/20/08