Gender

  • Beer 500 ml · 5 %0
  • Wine 200 ml · 12 %0
  • Sparkling wine 100 ml · 11 %0
  • Spirits 20 ml · 40 %0

Typical servings – if the label says otherwise, use your own drink below.

Tap to type · drag sideways to adjust

%

Beer: ~5% · Wine: ~12% · Sparkling wine: ~11% · Spirits: ~40%

Tap to type · drag sideways to adjust

Elimination rate: approx. 0.15‰ per hour

The calculator then shows the time at which 0.0 ‰ is reached in theory.

BAC after drinking

0.36‰

0.36

Using the Widmark formula, 20.0 g of alcohol give a calculated 0.36‰ right after drinking. In theory 0.0 ‰ about 2.5 h after the last drink.

0.20 ‰0 hrs1 hrs2 hrs3 hrs0.0 ‰
Alcohol (g)
20.0 g
BAC directly
0.36 ‰
In theory 0.0 ‰ after
about 2.5 h

The Widmark formula is an approximation and does not account for absorption time, stomach contents or individual enzyme activity. Actual blood alcohol concentrations can deviate considerably. This calculator is for informational purposes only.

How this was calculated
Alcohol (g) = volume (ml) × ABV × density
500 × 5 % × 0.8 = 20.0 g
Widmark: BAC = alcohol (g) ÷ (weight × r)
20.0 ÷ (80 × 0.7) = 0.36 ‰
Elimination: 0.15‰ per hour, not below 0

Important

  • Not proof of fitness to drive

    This calculator makes no statement whatsoever about fitness to drive and does not replace a fitness-to-drive test. The calculated value is a theoretical estimate – individual factors such as fatigue, tolerance, medication, stomach contents and metabolism can vary considerably. Never drive under the influence of alcohol.

  • These limits are set by law

    0.5 ‰ at the wheel is an administrative offence (§ 24a StVG); during the probationary period and under 21 the limit is 0.0 ‰ (§ 24c StVG); from 1.6 ‰ the licensing authority requires a medical-psychological assessment (§ 13 FeV). Below that, it can be a criminal offence if there are signs of impairment (§ 316 StGB).

Blood Alcohol Calculator by Rechnerzentrale(opens in a new tab)