Alcolater

Alcolater is a simple blood alcohol (BAC) and promille calculator. Enter what you've had to drink, plus your weight, age and sex, and get an instant estimate of your blood alcohol level using the scientifically recognised Widmark formula — plus an estimate of when you'll be back down to zero.

Whether you're keeping track at a party, a Friday bar or a dinner, Alcolater helps you understand your alcohol level (promille) at a glance.

KEY FEATURES
- Blood alcohol (BAC / promille) estimate with the Widmark formula
- See when your alcohol level is estimated to reach 0.0 again
- Add your standard drinks (genstande) and the times you drank them
- 7-day history, grouped by day
- Works offline — everything stays on your device
- No ads, no tracking, no account required
- Available in multiple languages

Alcolater Pro (optional subscription) unlocks the full experience, with a 7-day free trial.

IMPORTANT - GUIDANCE ONLY
Alcolater provides an estimate only. Your real blood alcohol level depends on many personal factors such as medication, health and metabolism. Never drive after drinking alcohol, no matter what any app shows.