Free standard drink calculator
Standard Drink Calculator: How many drinks are in your pour?
Calculate U.S. standard drinks from volume and ABV. Enter beer, wine, cider, spirits or cocktails and see the result in seconds.
What the result means
A direct answer,
with the math visible.
A U.S. standard drink contains about 14 grams of pure alcohol. It is a measurement of alcohol, not a promise that every bottle, glass or cocktail counts as one drink.
In the United States, one standard drink contains about 14 grams (0.6 fl oz) of pure alcohol. A large or strong serving can contain more than one.
Measurements are approximate because actual serving sizes and labelled ABV can vary. Use these results for education and personal tracking, not medical or legal decisions.
Worked examples
- 355 ml beer at 5% ABV ≈ 1 standard drink
- 150 ml wine at 12% ABV ≈ 1 standard drink
- 45 ml spirit at 40% ABV ≈ 1 standard drink
Go deeper
Common questions
Before you use the result.
What is a standard drink?
In the United States, one standard drink contains about 14 grams of pure alcohol. The amount can be spread across different serving sizes and drink types.
Why can one can contain two standard drinks?
Container size and ABV both affect the total. A 473 ml strong beer can contain substantially more alcohol than a 355 ml beer at 5% ABV.
Do cocktails count as one standard drink?
Not necessarily. A cocktail may contain multiple spirit measures, so each ingredient and pour size should be included.
Keep the full picture
One calculation helps. A pattern helps more.
Track drinks, units, dry days, cost and estimated BAC over time with Alcohol Tracker°.
