Free Standard Drink Calculator

According to the NIAAA, one standard drink contains 14 grams (0.6 fl oz) of pure alcohol. That equals: 12 fl oz of regular beer at 5% ABV, 5 fl oz of wine at 12% ABV, or 1.5 fl oz of 80-proof spirits (40% ABV) such as vodka, whiskey, rum, or tequila.

Standard Drinks = (Volume in fl oz × ABV%) ÷ 0.6. For example, a 16 fl oz craft IPA at 7.5% ABV = (16 × 0.075) ÷ 0.6 = 2.0 standard drinks. The 0.6 comes from the definition of one standard drink = 0.6 fl oz of pure alcohol.

A standard 1.5 fl oz shot of vodka at 40% ABV equals exactly 1.0 standard drink and approximately 97–100 calories. Most popular vodka brands (Tito's, Absolut, Grey Goose, Smirnoff, Belvedere) are 40% ABV, so a single shot is always 1.0 standard drink regardless of brand.

On average, one standard drink contains about 120 calories. This accounts for the ~98 kcal from 14g of pure ethanol plus the calories from carbohydrates in beer and wine. Pure spirits (vodka, whiskey) have fewer carbs, so a 1.5 oz shot is closer to 97–100 kcal.

For men: no more than 4 drinks on any single day and no more than 14 per week. For women: no more than 3 drinks per day and no more than 7 per week. Staying within these limits significantly lowers health risks, though no amount of alcohol is entirely risk-free.

No. A pint (16 fl oz) of regular beer at 5% ABV equals approximately 1.3 standard drinks. A pint of craft beer at 7.5% ABV equals about 2.0 standard drinks — meaning two pints could bring a man to his daily NIAAA limit.

The US defines one standard drink as 14g of pure alcohol. The UK defines it as 8g, and Australia as 10g. This means the same glass of wine can count as a different number of "standard drinks" depending on which country's definition you use.