Estimates your BAC(‰) using the accurate Widmark formula. Data is stored safely on your device only. Build responsible drinking habits today.
* Supports iOS 14.0+ and Android 8.0+. Must be 19 or older.
Let the app handle the complex math. Get precise BAC predictions and recovery insights with just a few taps.
Calculates reliable BAC (‰) based on your gender, weight, age, and detailed drink history.
Provides customized drink presets and legal driving limits for regions like Korea, US, Japan, Germany, etc.
Visualizes your estimated BAC breakdown over the next 12 hours, showing exactly when you'll be sober.
Your physical profile and drinking history are saved ONLY on your local device. Zero server uploads.
Generate an image of your BAC results instantly to save to your gallery or share with friends.
Supports system-level dark mode and multiple languages (EN, KO, JA, ES, DE) right out of the box.
No, they are estimates. Individual differences (metabolism, empty stomach, sleep, medication) vary greatly. Do not use this app for legal, medical, or driving decisions.
The default scientific unit used is ‰ (per mille). The % symbol is shown merely as a reference by roughly dividing the ‰ value by 10.
All data is stored purely on your device's local storage (HistoryStore). We do not send your drinking logs or physical attributes to any server.
Go to the App's Settings -> Theme Display, and you can select between System Default, Light, or Dark mode.
AlcoCalc provides reference estimates only. Never drive if you have consumed even a single drop of alcohol. We advocate for a mature and responsible drinking culture.