Standard Drink Calculator: How Many Drinks Is That?
In the United States one standard drink contains 14 grams (0.6 fl oz) of pure alcohol (NIAAA). Enter the size and strength of your drink to see how many standard drinks it is.
Sources: NIAAA: What is a standard drink?; NHS: calculating alcohol units; NIST Handbook 44, Appendix C (1 US fl oz = 29.573 53 mL) (read 3 Nov 2026).
Information only. This tool counts standard drinks; it does not estimate blood alcohol or whether it is safe to drive. Never drink and drive.
What counts as one standard drink?
According to the NIAAA, each of these is about one standard drink: 12 fl oz of regular beer (about 5% alcohol), 8–10 fl oz of malt liquor (about 7%), 5 fl oz of table wine (about 12%), 3–4 fl oz of fortified wine (about 17%), 2–3 fl oz of liqueur (about 24%) and a 1.5 fl oz shot of distilled spirits (about 40%). A 12 oz beer at 10% alcohol is two standard drinks.
Standard drinks in common containers
| Drink | Approximate number of US standard drinks |
|---|---|
| Regular beer (5%) | 12 fl oz = 1; 16 fl oz = 1⅓; 22 fl oz = 2; 40 fl oz = 3⅓ |
| Malt liquor (7%) | 12 fl oz = 1½; 16 fl oz = 2; 22 fl oz = 2½; 40 fl oz = 4½ |
| Table wine (12%) | 750 ml (a regular wine bottle) = 5 |
| 80-proof spirits (40%) | a shot (1.5 oz glass or 50 ml bottle) = 1; a mixed drink or cocktail = 1 or more; 200 ml (a "half pint") = 4½; 375 ml (a "pint" or "half bottle") = 8½; 750 ml (a "fifth") = 17 |
Sources: NIAAA Rethinking Drinking: how many drinks are in common containers (read 3 Nov 2026).
How the calculator works
Pure alcohol (ml) = amount x ABV / 100. Grams of alcohol use the NIAAA figure of 14 g in 0.6 fl oz (about 0.79 g per ml); standard drinks = grams / 14. UK units use the NHS figure of 10 ml of pure alcohol per unit. One US fluid ounce is 29.574 ml (NIST).
General information only, not medical or legal advice. If you are worried about your drinking, talk to a doctor or see our support pages. Never drink and drive.