Germannyuus Calculators & news for Germany

Blood Alcohol Calculator (Germany)

Our blood alcohol calculator estimates your blood alcohol concentration in per mille (‰) – the unit used in Germany – after beer, wine or spirits, and shows when the alcohol should be gone. It is a rough guide only, never a reason to drive.

Blood Alcohol Calculator

Widmark estimate · not a test of fitness to drive

Sex
kg
hrs
Drinks
Beer 0.5 l5 % ABV
Beer 0.33 l5 % ABV
Wine 0.2 l12 % ABV
Sparkling wine 0.1 l11 % ABV
Shot 2 cl40 % ABV
Long drink 0.3 l~6 % ABV
Custom drink
ml
%
Estimated blood alcohol now–
00.30.51.11.62.0 ‰
Pure alcohol–
Peak (before breakdown)–
Sober (calculated)–

A rough guide only – real values depend on food, health and drinking speed. If you drink, don’t drive. Novice drivers and under-21s must be at 0.0 ‰.

German drink-driving limits

  • 0.0 ‰: novice drivers in their probation period and everyone under 21
  • from 0.3 ‰: criminal offence if you drive erratically or cause an accident
  • from 0.5 ‰: administrative offence – first time €500 fine, 2 points and a 1-month driving ban
  • from 1.1 ‰: absolute unfitness to drive – criminal offence, licence withdrawn
  • from 1.6 ‰: medical-psychological assessment (MPU) – also for cyclists

Frequently asked questions

How is the value calculated?

With the Widmark formula: grams of alcohol ÷ (body weight × distribution factor of about 0.7 for men and 0.6 for women), minus 10 % absorption deficit and about 0.15 ‰ breakdown per hour.

Does coffee help to sober up?

No. Coffee, sleep or exercise do not speed up how fast your body breaks down alcohol.