Add up every drink from a session to see how many standard drinks you've had and roughly how long it takes your body to process the alcohol.
Calculated on your device. Nothing is uploaded or stored on a server.
For each drink, enter its volume (in milliliters), its alcohol by volume (ABV) percentage, and how many you had. Add as many different drinks as you need — a beer, a glass of wine, a cocktail — and the totals update instantly.
A standard drink is a fixed amount of pure alcohol, though the exact definition varies by country. This calculator converts each drink's volume and ABV into grams of pure alcohol (volume in mL × ABV% × 0.789, the density of ethanol), then divides by your selected country's standard drink size in grams.
The US defines a standard drink as 14 grams of alcohol, the UK uses 8-gram units, and other countries use their own values — so the same round of drinks can be a different number of "standard drinks" depending on where you are.
The liver metabolizes roughly one standard drink (about 7 grams of alcohol) per hour on average, but this varies with body weight, sex, food intake, medications and overall health.
Common questions, answered.
It depends on the country: the US uses 14 grams, Australia 10 grams, the UK 8 grams per unit, and Canada 13.6 grams. Select your country's definition from the dropdown.
Grams of alcohol = volume in milliliters × (ABV percentage ÷ 100) × 0.789, using the density of pure ethanol. This calculator does that for each drink and adds them together.
It's a rough average based on roughly 7 grams of alcohol processed per hour by the liver. Actual rates vary by body weight, sex, genetics, food consumption and overall health, so treat it as a general guide, not a precise timer.
No. This tool cannot measure your blood alcohol concentration or determine impairment. Never drive after drinking, regardless of how many standard drinks this calculator shows.