Standard Drink Calculator (US)
Health & FitnessCalculate the number of US standard drinks in a beverage from its volume and ABV.
US Standard Drinks
The number of US standard drinks, where one standard drink equals 14 grams of pure alcohol.
Pure Alcohol Content
14.0
The grams of pure alcohol in this drink, using the standard ethanol density of 0.789 g/mL.
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Frequently Asked Questions
What is a US standard drink?
In the United States, a standard drink is defined as containing about 14 grams (0.6 fl oz) of pure alcohol, roughly the amount in a 12oz regular beer, a 5oz glass of wine, or a 1.5oz shot of distilled spirits.
How is pure alcohol content calculated?
Pure alcohol content is calculated by multiplying the drink volume by its ABV percentage, then by the density of ethanol, which is about 0.789 grams per milliliter.
How is this different from a UK unit?
A US standard drink (14g pure alcohol) is a larger measure than a UK unit (10ml or 8g pure alcohol), so the same beverage converts to a different number depending on which measure is used.
How many standard drinks are considered moderate drinking?
US dietary guidelines define moderate drinking as up to 1 standard drink per day for women and up to 2 per day for men.
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