Blood alcohol content calculator
Estimate your blood alcohol content (per mille) from the number of drinks, weight, sex and time elapsed.
Blood alcohol content
0.25 ‰
Do not drive
Pure alcohol30 g
Sober inin 3.68 h
Estimate (Widmark). The real result depends on many factors - never drive after drinking alcohol.
Approximate calculation. The exact amount is confirmed by the Social Insurance Board or the Tax and Customs Board - check the official source.
Last updated: 2026-06-03
How is BAC calculated?
Widmark formula: per mille = grams of alcohol / (weight × r) − 0.15 × hours, where r is 0.68 for men and 0.55 for women. One drink contains about 10 g of pure alcohol. The result is indicative - never drive after drinking alcohol.