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Taux d'alcoolemie

Calculate your blood alcohol content (BAC)

Calculate your current blood alcohol level, the amount of alcohol you can drink, how long to wait to drive, how long it will take to eliminate all alcohol, and how much you can drink before you test positive.

WARNING : These calculations are provided for information only and do not engage the responsibility of the author. Each person is different and many factors can affect the absorption and elimination of alcohol. A breathalyzer can help you determine your BAC. Only electronic or blood tests are reliable enough to accurately determine your blood alcohol level. The site may also contain errors and misjudge your BAC. In any case, remain responsible and never drive after drinking.

Complete the information below:

For a man

For a woman

g/L of blood
kg
hours ago

You drank :

Beer

beers
% alcohol
0.75 liters (75cl)
% alcohol

Wine

glasses (12,5cl)
% alcohol
bottles (75cl)
% alcohol
glasses (10cl)
% alcohol

Aperitif

glasses (7cl)
% alcohol

Strong alcohols

glasses (3cl)
% alcohol
glasses (2,5cl)
% alcohol

Results

Blood : g/L of blood

Breath : mg/L of air

Before driving : h minimum

You can drink g of alcohol before to be legally intoxicated, or :

glasses of beer, or
cl of beer with
% alcohol
glasses of wine, or
cl de wine with
% alcohol
glasses of champagne, or
cl de champagne with
% alcohol
glasses of apéritif, or
cl of aperitif with
% alcohol
glasses of whisky, or
cl of whisky with
% alcohol
glasses of other strong alcohol, or
cl of other strong alcohol with
% alcohol
litres de bière (100cl), or
cl de bière with
degrés
litres de bière (100cl), or
cl de bière with
degrés
g / L de sang, or microgrammes par litre d'air expiré
g / L de sang, or microgrammes par litre d'air expiré
g