Alcohol calculator and residual breath/blood alcohol (online calculation)

Alcohol calculator and residual breath/blood alcohol (online calculation)

You want to know how much alcohol you've had? Calculate it using our calculator. The values are only a guide. Actual residual alcohol in your breath and blood cannot be determined by this method. Remember that the combination of driving or cycling and residual alcohol is not allowed.
Enter your weight in kilograms
The calculations are indicative
How many glasses of alcohol did you drink?
5dL glass
3dL glass
0.4dL shot of 40 percent alcohol
How many hours ago was your last drink?
hours ago

Alcohol Calculator

Are you wondering what your blood alcohol content is after a night of drinking? Do you remember what and how much you drank?

Attention: Any calculation on the internet is purely informative. It is in no way a substitute for a measurement by a calibrated breathalyser. It does not serve as a full-fledged driving test.


We are all different. A degradation formula may be 100% valid for one person, but for another person may show an incorrect result.

Alcohol (ethanol) is gradually removed from the blood by the enzyme alcohol dehydrogenase (ADH). This enzyme is found mainly in the cells of the liver, stomach and kidneys.

Interesting fact:

  • There are currently 7 types of ADH.
  • Each variant works at a different rate.
  • The rate of metabolism affects the tolerance of alcohol and the time it takes to be eliminated from the blood.
  • Each person has a different "ADH equipment".
  • Therefore, it takes longer to remove alcohol from the body.

Think about it...

Alcohol (also residual) on the breath measured by the police is not the only problem. Risky driving can cause tragedy - not just for you. Reckless actions can cost someone their health and life.

And that's not worth the moment of fun with ethyl alcohol.

Read also:

Important notice:

Please remember that the results of our health calculators and analyzers are for guidance purposes only. They are not a substitute for a professional examination or the advice of a doctor, pharmacist or other health care professional.

Each person is unique, and everyone's needs may vary. Calculators and analyzers have limitations and do not provide a comprehensive individual view of health.

Their use is at your own risk. Neither the site operator nor the author is responsible for misuse and misinterpretation of information obtained through their use. By using the calculators and analyzers, you agree to these terms and conditions and neither the operator nor the author shall be liable for any consequences.

You are advised to consult a professional for your medical condition. Remember that health is an important topic and any decisions should be made in consultation with a professional.

This calculator/analyzer is not a medical tool or medical aid. Consult your doctor about your health problem.

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