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Drink Size Calculator

Do you know how many “standard drinks” (also known as alcoholic drink equivalents) are in a:

1.8 standard drinks per container

4.7 standard drinks per container


4.5 standard drinks per container

5 standard drinks per container

Chances are, your cup or beverage label won't tell you the answer—but this calculator will. See this drop-down menu for common container sizes and alcohol content for different beverages.

(The alcohol content of different types of beer, other malt beverages, and wine may vary.)

(convert proof to alc/vol)
(convert to fl. oz.) if needed)

Why is this Information Important?

Knowing U.S. standard drink (or alcoholic drink equivalent) sizes and the number of drinks per container can help you make informed decisions about your drinking.

Can't Find your Beverage on the Menu?

To check beverages or container sizes not listed in the drop-down menu, you can enter your own amounts into the calculator. Here’s how:

  • Find the alcohol content of the beverage. For all distilled spirits and most wine, the container label lists the percent "alcohol by volume" or alc/vol. Many beer and malt liquor labels do not list this information, however. To find it, search online for the beverage bottler or other reliable sources.
  • Enter the alc/vol in the first column of the calculator.
  • Enter the container size in the third column of the calculator.

The calculator will show you how many standard drinks the container holds.

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Disclaimer: This calculator is for educational purposes only, to show how the number of standard drinks (or alcoholic drink equivalents) and the alcohol content (% alc/vol) of a cocktail can vary depending on the type of spirits and the recipe. Any differences between the data you enter in the calculator and the actual amount in a drink could significantly affect the accuracy of the estimates. Because of this and individual variations in alcohol sensitivity and metabolism, the calculator should not be relied upon to predict blood alcohol level or any other measure. Do not drink if you are under the legal age (21 in the United States), and do not drive or engage in other potentially dangerous activities after drinking.

Order our free print publication, available in English and Spanish

Download or order the free 20-page booklet, “Rethinking Drinking: Alcohol & Your Health”.

Rethinking Drinking English booklet

Disponible en Español

Descargue o ordene copias gratis del folleto de 20 páginas ‘Piénselo Antes de Beber: El Alcohol y su Salud’.

Rethinking Drinking Spanish booklet

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