Blood alcohol calculator

Q: How long does it take to burn alcohol?

Som en hovedregel forbrenner kroppen ca 0,15 promille i timen. Det betyr at hvis du har 1,0 i promille, tar det i overkant av 6 hours før alkoholen er helt ute av blodet.

Q: When can I drive after drinking?

I Norge er den lovlige grensen for å kjøre bil 0,2 promille. For å være på den sikre siden anbefales det alltid å vente til promillen er på absolutt 0,0 før man setter seg bak rattet, og legge inn god margin. Bruk aldri en kalkulator som eneste fasit.

Calculate your estimated blood alcohol level and burn time.

How it works: This calculator uses Widmark's formula to estimate your blood alcohol concentration (BAC) and the time required for it to reach 0. Results are guidance only. Never drive under the influence.

Sex

Mann Kvinne

Body weight (kg)

Time since you started drinking (hours)

What have you been drinking?

Beer (0.5L) 🍺

Vin (Glass) 🍷

Shot (4cl) 🥃

Estimated blood alcohol level

0.00 ‰

Time to sober up (0.0 ‰) 0 hours

Warning: This calculator provides a theoretical estimate only. Alcohol metabolism varies individually. Never drive under the influence. The legal BAC limit in Norway is 0.2‰.

Frequently asked questions about blood alcohol levels

How long does it take to burn alcohol?

The general rule in Norway is that you burn approx. 0.15 parts per thousand per hour (varies from 0.10 to 0.25 in healthy people). Neither coffee, exercise, sleep nor a sauna can speed up the burning of alcohol, only the liver does the work, and it takes the time it takes.

When can I drive after drinking?

In Norway, the law's absolute blood alcohol limit is 0.2 ‰ for driving a motor vehicle. However, you should always calculate a good margin and wait until you are absolutely sure that you are at 0.0 ‰. "Day after" driving is a very common reason for license suspension.