Standard Drinks & Alcohol Units Calculator | The BAC Calculator

Turn a serving size and ABV into standard drinks, alcohol units, pure alcohol grams, and calories.
Choose your location to use the standard measure relevant to you.
A standard drink is a public-health measure, not a recommendation to drink.
Useful context, not a driving test. If you have been drinking, choose a sober ride.
We multiply volume by ABV and ethanol density (0.789 g/ml) to estimate pure alcohol. That total is divided by your country’s definition: 14 g in the U.S., 8 g in the UK, and 10 g in Australia, New Zealand, Ireland, and Singapore.
Compare the reference amounts used in seven countries.
Calculate UK units from volume and ABV.
Calculate the 10 g Australian reference directly.
Put two container sizes and ABVs side by side to compare pure alcohol and local reference units.
Use your own typical price and purchase frequency to view weekly, monthly and annual totals.
Alcohol information tools for informed choices. Educational only.