What this calculator does
US standard alcoholic drinks works out number of US standard drinks (14 g pure alcohol each) in a beverage, from volume and ABV. Enter your own figures above and the answer updates as you type: nothing is fixed in the code, so the result reflects exactly the numbers you supply.
The formula this calculator evaluates is printed under the tool and explained below, so you can check the working by hand or reuse it in a spreadsheet.
The formula
FormulaPure alcohol (g) = volume(mL) × ABV(%)/100 × 0.789 g/mL; standard drinks = grams ÷ 14
The inputs explained
| Field | What to enter |
|---|---|
| Drink volume (mL) | A number, measured in mL. Starts at 355. |
| Alcohol by volume (%) | A number, measured in %. Starts at 5. |
Worked examples
Every figure in the tables below is produced by this page’s own calculator at build time, so the numbers and the tool always agree. Select any row to load that scenario.
How the answer changes with drink volume
Every other input is held at the calculator’s starting values while drink volume varies. Select any row to load that scenario into the calculator.
How the answer changes with drink volume
| Drink volume (mL) | US standard drinks | Pure alcohol content | Reference |
|---|---|---|---|
| 178 | 0.50 | 7.0 g | 1 US standard drink = 14 g (0.6 fl oz) of pure alcohol, per NIAAA |
| 266 | 0.75 | 10.5 g | 1 US standard drink = 14 g (0.6 fl oz) of pure alcohol, per NIAAA |
| 355 | 1.00 | 14.0 g | 1 US standard drink = 14 g (0.6 fl oz) of pure alcohol, per NIAAA |
| 533 | 1.50 | 21.0 g | 1 US standard drink = 14 g (0.6 fl oz) of pure alcohol, per NIAAA |
| 710 | 2.00 | 28.0 g | 1 US standard drink = 14 g (0.6 fl oz) of pure alcohol, per NIAAA |
| 1,065 | 3.00 | 42.0 g | 1 US standard drink = 14 g (0.6 fl oz) of pure alcohol, per NIAAA |