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BAC Calculator

Estimate your blood alcohol concentration (BAC)

Blood alcohol concentration (BAC) refers to the legal phrase used to describe the amount of alcohol in a person's blood system. A person's BAC depends on a number of factors: the amount of alcohol, strength of the alcohol, a person's weight, age and gender. In Alabama, drivers are considered legally drunk if they have a BAC over .08 percent. The threshold for charging a driver with DUI in Alabama is even lower than .08 percent for certain drivers, including commercial truck drivers.

DUI charges can change your life. The impact of a DUI arrest can be far reaching; that of a conviction can be devastating. You may lose driver's license or your job. You could also face a lengthy jail sentence. You need to take your DUI charges seriously right from the start.

Our BAC calculator should not be used to determine your official BAC reading. Test results can vary widely from one person to another, depending on their age, weight, gender and wide range of other factors. The estimates provided here do not precisely measure your BAC and should not be construed as legal advice.

How outside factors can influence a BAC reading

BAC calculators are not the only imperfect methods used to measure a person's BAC. Alabama police officers routinely measure a person's BAC using DUI breath tests, even though the results of such tests - and others - can be notoriously unreliable. Some of the factors that can influence the results of a breath test include:

  • Diet
  • Breathalyzer settings
  • Improper handling or storage of evidence
  • Holding your breath before taking breath test often results in higher false readings
  • Burping within 20 minutes might produce "false high" BAC readings or residual "mouth alcohol"
  • Mouth alcohol produced by blood, chewing tobacco or other substances trapped in a person's mouth may produce false high BAC readings

Contact Barclay Law, LLC today for skilled legal assistance

If you have been charged with DUI in Alabama, you need to act fast. You rights could be at risk. You must take legal action within 10 calendar days of your arrest to keep your driver's license. Otherwise, your driver's license could be suspended. Don't delay. Time is of the essence. Contact us today. Call 866-584-1023 or fill out our online inquiry form and schedule a free consultation today. The sooner you contact us, the sooner we can help you get your life back on track.

Barclay Law, LLC proudly serves clients in Birmingham, AL, Tuscaloosa, AL, Auburn, AL, Mobile, AL, Shelby County, AL, the Gulf Shores and throughout the state of Alabama, including the municipalities of Adamsville, Bessemer, Docena, Dolomite, Fairfield, Fultondale, Graysville, Homewood, Hoover, Mountain Brook, Mount Olive, New Castle, Pleasant Grove, Prattville, Shannon, Vestavia, Watson and Wetumpka.

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