DrinkPal: Alcohol Calculator

Know your blood alcohol — and when it wears off.

DrinkPal estimates your blood alcohol level during a night out and tells you roughly when you should be sober again. Log what you drink, watch the curve rise and fall, and get a notification the moment the estimate says you are clear.

Scan the bottle, skip the menus

📷 Point your camera at any bottle barcode

📷 Known bottles are logged in a single tap

📷 New ones are saved to your library with name, type and ABV, pre-filled from Open Food Facts

📷 Your bottle library keeps working offline afterwards

See the whole night

📈 Live promile (‰) estimate that updates as you drink

📈 Peak level, and the time you reached it

📈 A timeline chart with every drink marked on the curve

📈 The time you cross the legal limit, and the time you are sober

Get told when you are sober

🔔 A notification fires at your estimated sober time

🔔 The message names the hour, so you can check without opening the app

🔔 Recalculated automatically whenever you add a drink

Built for real nights out

🍺 Presets for beer, wine and vodka, plus any custom drink

🍺 Set your own volume and ABV for anything unusual

🍺 Add a drink you forgot, even after the session ended

🍺 Separate profiles, so everyone at the table tracks their own night

Your history, your data

📅 Every past session with its drinks and its curve

📅 Daily bars and sober-day streaks over 7, 14 or 30 days

📅 Export and import a full backup as a file you keep

📅 No account, no sign-up — everything stays on your device

How the estimate works

DrinkPal uses the Widmark method with Watson total body water, based on your sex, weight, height and age, plus how full your stomach was when you started. Food slows how fast alcohol reaches your blood, so it changes the shape of the curve. Elimination is deliberately set on the cautious side, which means DrinkPal will tend to tell you that you are sober later rather than earlier.

Available in English, Polish, Spanish, German, Italian and Chinese.

Important

DrinkPal is a calculator, not a breathalyser and not a medical device. It cannot measure anything. Real blood alcohol varies enormously between people and depends on metabolism, health, medication and much else that no app can see. Being below a legal limit is not the same as being fit to drive.

Never use this app to decide whether to drive. If you have been drinking, do not drive.