Blood alcohol calculator
Add your drinks just like in the app: DrinkMap estimates your blood alcohol level, when you will be under the legal limit and when you will be back to zero. Free and anonymous, nothing is sent.
How long does it take to get rid of alcohol?
Small beers (25 cl, 5%) drunk at once on an empty stomach by someone who drinks 1 to 3 times a month: estimates from the same calculation as the tool above.
| Small beers | Man 75 kg: peak | Back to 0 | Woman 60 kg: peak | Back to 0 |
|---|---|---|---|---|
| 1 | 0.14 g/L | 1h 34 | 0.23 g/L | 2h 56 |
| 2 | 0.32 g/L | 3h 11 | 0.50 g/L | 5h 59 |
| 3 | 0.51 g/L | 4h 49 | 0.78 g/L | 9h 01 |
| 4 | 0.69 g/L | 6h 27 | 1.05 g/L | 12h 04 |
| 5 | 0.88 g/L | 8h 05 | 1.32 g/L | 15h 07 |
| 6 | 1.07 g/L | 9h 43 | 1.60 g/L | 18h 09 |
Example: after 3 small beers, a 75 kg man reaches about 0.51 g/L and is back to 0 after 4h 49.
How does it work?
The calculator uses the app’s algorithm. Each drink is absorbed gradually (over 30 minutes on an empty stomach, 1h30 after a meal). The alcohol present is eliminated at 0.085 to 0.15 g/L per hour depending on your gender and habits. The level follows the Widmark formula: alcohol divided by your weight multiplied by 0.7 for men or 0.6 for women.
See the detailed method and sourcesDrink-driving limits
The limit is 0.5 g/L of blood in France, Germany, Spain, Belgium or Switzerland, and 0.8 g/L in the United Kingdom, the United States or Canada. It is lower for new drivers. The only truly safe level for driving is zero.
FAQ
How long does it take to eliminate one drink?
Does drinking water or coffee lower blood alcohol?
Does eating lower blood alcohol?
Why do women have a higher level for the same drink?
Is this calculator reliable?
Your level in real time, all night long
In DrinkMap, your drinks are logged with the place and time: the gauge updates by itself and tells you when you will be back to zero.
