Safely through road traffic

Per mille calculator

Alcohol and road traffic

How much is too much?

Note on road safety:
We would like to expressly advise against consuming alcohol before driving. Especially for novice drivers and people under the age of 21, there is an absolute ban on drinking and driving in Germany – the so-called 0 per mille rule.

The alcohol calculator serves as a supporting tool to develop a better understanding of how quickly alcohol can reach dangerous concentrations in the blood.

With the help of the calculator, you can see how the alcohol content in your blood changes – often faster than you think. This makes it clear how quickly the legally permitted limit can be exceeded. The main purpose of this is to raise awareness of the risks of drinking and driving.

What the alcohol calculator shows you:

  • How alcohol affects your body and when it becomes critical.
  • How even small amounts can impair your ability to drive.
  • Why it makes sense to avoid alcohol altogether if you still want to drive.


Remember the 0 per mille rule:

All novice drivers and young drivers under the age of 21 are not allowed to drink and drive in Germany. However, even experienced drivers should be aware that even small amounts of alcohol significantly increase the risk of accidents.