BAC Info

Blood Alcohol Content (BAC) can tell you just how intoxicated you are because it measures the percentage of alcohol in your bloodstream. It is affected by several factors:

  • How many drinks you consume and how strong they are
  • Time
  • Weight: People who weigh less are more affected by alcohol
  • Sex: Women tend to be more affected by alcohol
  • How much food is in your stomach: eating while drinking means the alcohol is absorbed into the bloodstream at a slower rate
  • Individual differences in metabolism and enzymes
  • Drugs interacting with alcohol
  • Tolerance

As your BAC increases, you begin to feel more of the effects of alcohol. Sure, the effects can feel pretty good at first, but the more you drink, the worse they become. The chart below shows you the breakdown of what occurs at different BAC levels:

bac chart

As you can see, the effects of alcohol can escalate quickly and lead to consequences that you will be sure to regret later. So, it is important to know how alcohol can affect you, and it is smart to be aware of how much you can drink before your BAC amounts to dangerous levels. For more information, as well as gender-specific charts to help you determine your BAC, check out the BAC flyer. The calculator below, Courtesy of Intoximeters Inc., can also help to determine the safe amount of drinking specific to you. 

The Drink Wheel
On-Line BrAC Calculator
About Disclaimer

I have had over a period of hour(s)2.

I am Male Female (Explanation of gender differences in Blood Alcohol Concentration)

and I weigh Pounds Kilograms

and I live in (so that the result is displayed in the appropriate units).

About the Drink Wheel

The Intoximeters Inc. "Drink Wheel"1 is a form that you can fill out. Upon completion we will instantly compute your estimated blood/breath alcohol concentration ("BAC") based on the information that you have provided and return that estimate to you. It is presented as a public service to Intoximeters web site visitors. Its primary purpose is to provide useful information about the responsible use of alcohol.

Why is it called a "Drink Wheel"?

We call it the "Drink Wheel" because it is based on various paper and cardboard BAC calculators that are given out in alcohol awareness programs, some of which are in the form of a wheel that you can spin around to calculate your estimated BAC based on what and how much you have had to drink.


It would be extremely foolish for us to pretend that our "Drink Wheel" can tell you what your BAC actually is, first because it would open us up to an incredible amount of potential liability and second if it really did work accurately there would be no need for anyone to buy the instruments that we make and sell.

A person's actual BAC is dependent on many complex factors, including their physical condition (body composition, health etc...) and what they have recently ingested (including food, water, medications and other drugs). This site includes a more detailed discussion of the Pharmacology and Disposition of alcohol in humans.

The results that are generated are rough estimates of an average healthy person's BAC assuming typical beverage sizes, recipes and alcohol content. The BAC estimates generated by the Drink Wheel should not be used to infer anyone's fitness to work, drive or perform any other task or duty.



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