MyPromille: Alcohol Calculator

MyPromille is a blood alcohol (BAC) calculator and drink tracker. Log what you drink and watch your estimated blood alcohol level update in real time, in ‰ (promille) or %. HOW IT WORKS Add each drink as you have it: beer, wine, spirits, cocktails or your own drink with its size and alcohol percentage. MyPromille uses your weight and gender to estimate your blood alcohol content, and brings it down over time as your body breaks the alcohol down. WHAT YOU GET • Real-time BAC – see your estimated blood alcohol while you drink, not afterwards. • Alcohol left – see how long the alcohol is expected to stay in your body. • Your own target – choose the level you want to stay under. • Custom drinks – add any drink with its size and alcohol percentage. • Statistics – follow your drinking over days and weeks. • Weekly reflection – a look back at the week's sessions. • Your units – ‰ or %, kg or lb, cl, ml or oz. • 21 languages. • Start straight away – no account or email needed. ABOUT THE ESTIMATE The calculation uses the Widmark formula, from Swedish researcher Erik Widmark, and takes into account your gender, your weight, the size and strength of each drink and the time that has passed. It is an estimate, not a measurement: food, sleep, medication and how you feel that day all change the real value, and people differ a lot. IMPORTANT MyPromille cannot tell you whether you are fit to drive, and never will. Only a breathalyzer or a blood test shows how much alcohol is really in your body. Been drinking? Leave the car. MyPromille is there to give you a clearer picture of your own drinking, for your health and your safety.