Blood/Breath Alcohol Concentration (BAC) is the amount ofalcohol in the bloodstream or on one's breath. BAC is expressed asthe weight of ethanol, measured in grams, in 100 milliliters ofblood, or 210 liters of breath. BAC can be measured by breath, blood, or urine tests.
- Some states define legal intoxication for purposes of driving as having a BAC of 0.08 or greater, in most cases (please check your state for the specific BAC level of intoxication). 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 estimatedblood/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: