Blood alcohol concentration calculator

Calculate an estimate of how long it will take for your body to metabolise the alcohol you have ingested.

Remember that there can be large individual differences in the elimination of alcohol from the body, and the result of the calculator may not match the values given by a breath test. If you are in doubt, take a breath test. The responsibility is always yours.

Are you female or male?
kg
years
hours ago

What kinds of drinks did you have? Either report the types of drinks or the number of servings directly. You can adjust the values using the plus and data-minus buttons or by typing a value in the field.

Centilitre (cl), e.g. 1 decilitre = 10 cl, 1 litre = 100 cl

Low alcohol

Medium strength

Stronger

Small glass

Large glass

Bottle

Standard restaurant pour

Bottle

One serving of alcohol is for example 33 cl of beer (alc/vol 2.9-4.7%), 12 cl of wine or 4 cl of spirits.

Results

Estimated blood alcohol content -- hours after you started drinking: -- per mil. It will take about -- hours in total to metabolise the alcohol, which means that it will still take about -- hours to reach zero blood alcohol content