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The calculation for blood alcohol content (BAC) on this website is based on the gender and weight of a person and the time elapsed since his/her first drink. The results of the drink calculator are rough estimates for an average person and should serve merely as a reference. Do not rely on the results of the drink calculator to make decisions regarding drinking or driving. FReD’s advice is to be safe. Don’t drink and drive.
Bar Exam

Know Your Blood
Alcohol Level


Start Simulator
After a long hard week of work, I’m going to hang out with my friends and enjoy a few drinks at one of the hottest bars in town tonight. 8PM – come quick! Select your age
Select your gender
Weight      kg
Are you pregnant? Prenatal exposure to alcohol could harm your unborn baby. FReD strongly advises pregnant women to avoid consuming any amount of alcohol.
What would you like to drink?
Time     
Hey there. How was your first drink?
You should not drive tonight. Remember, it is always good to be safe. Don’t drink and drive.
Time     
Your Blood Alcohol Concentration (BAC) is already over 0.05%, i.e. your breath already contains more than 22 micrograms of alcohol in 100 milliliters of breath.

The alcohol content in your body is over the legal limit.  You should not drive.  You should call a taxi, get a designated driver or call a friend or family member to get you home safely.


Time     
Blood alcohol content (BAC) is the concentration of alcohol in the blood. The BAC calculation on this website is not legal advice, rather it is a rough estimate of what the blood alcohol level would be for an average person that consumed a particular amount of alcohol, and should serve merely as a reference. Do not rely on the results of the drink calculator to make decisions regarding drinking or driving. However, even though this drink calculator may not represent your true BAC, it is important to remember that it is illegal to drive with a BAC of 0.05 and above in Hong Kong. FReD’s advice is to be safe. Don’t drink and drive.
Blood alcohol content (BAC) is the concentration of alcohol in the blood. The BAC calculation on this website is not legal advice, rather it is a rough estimate of what the blood alcohol level would be for an average person that consumed a particular amount of alcohol, and should serve merely as a reference. Do not rely on the results of the drink calculator to make decisions regarding drinking or driving. However, even though this drink calculator may not represent your true BAC, it is important to remember that it is illegal to drive with a BAC of 0.05 and above in Hong Kong. FReD’s advice is to be safe. Don’t drink and drive.