What does ABV mean?
ABV means alcohol by volume. A label showing 5% ABV means that approximately 5% of that drink’s volume is pure alcohol. ABV is often written as “alc/vol” or “alcohol by volume” on labels.
Why ABV matters
ABV must be considered together with serving size. A 355 ml beer at 5% ABV and a 355 ml beer at 8% ABV do not contain the same amount of alcohol. The same is true when a larger glass or container is used.
How to calculate pure alcohol from ABV
Our tools use this estimate: volume in ml × ABV as a decimal × 0.789. The result is pure alcohol in grams. You can then compare that amount with a local standard-drink reference, such as 14 g in the United States, 8 g for a UK alcohol unit, or 10 g in Australia, New Zealand, and Ireland.
ABV and proof
In the United States, distilled-spirit labels may also show proof alongside alcohol by volume. For example, a spirit labeled 40% alcohol by volume may also be labeled 80 proof. Use the ABV shown on the label whenever possible; proof conventions are not used uniformly around the world.
Common label-reading mistakes
- Assuming every beer, wine, or cocktail has the same ABV.
- Counting a large can, bottle, or restaurant pour as one standard drink without checking its size.
- Using calories, taste, or carbonation as a proxy for alcohol amount.
- Using an alcohol calculation to decide whether it is safe or legal to drive.
Put ABV into context
Use the Standard Drinks Calculator for an individual serving, or use the Container Calculator for a full can or bottle. For a country comparison, read What Is a Standard Drink?.