Blood Alcohol Concentration Calculator

The following "calculator" may be used to get a rough estimate of your Blood Alcohol Concentration (BAC). This is a general guide and will vary from person to person and is in no manner portrayed as accurate.

"THIS CALCULATOR MUST NOT BE RELIED UPON TO DETERMINE IMPAIRMENT"

In the state of Iowa you are presumed intoxicated for the purpose of Operating While Intoxicated (OWI) when you have a BAC at or above .08. Persons have been charged and convicted for OWI with a BAC under .08. The American Medical Association has determined that impairment begins at .04% BAC.