Standard drink calculator

How many standard drinks are in your pour?

Enter the volume and alcohol by volume (ABV) shown on the label, then choose the country definition that applies to you.

Calculate standard drinks

Definition

01

02

% ABV

03 · result

Australia

1.5 standard drinks
Pure alcohol
14.8 g
Volume in ml
375
Definition used
10 g per drink

ml × ABV ÷ 100 × 0.789 ÷ grams per standard drink

One pour, three definitions

Australia counts 10 g per drink, the US 14 g, and the UK 8 g per unit.

AU · 10 g
1.5
US · 14 g
1.1
UK · 8 g
1.8

Method

What the calculator is doing

The calculator converts the volume to millilitres, applies the ABV, and uses an ethanol density of 0.789 g/ml. It then divides the estimated alcohol weight by the selected country definition.

The result is an estimate. Differences in the label value, serving size, temperature, or rounding can change the number shown. UK guidance uses ABV × ml ÷ 1,000. This calculator follows DrinkData’s 8 g method, which gives results about 1.4% lower than that shortcut. Fluid ounces here are US fluid ounces (29.5735 ml), not imperial fluid ounces.

References

Sources behind the definitions

Primary government and scientific references, checked October 19, 2026.

  1. [1]

    Australian Government Department of Health, Disability and Ageing. (n.d.). Standard drinks guide. Australian definition: 10 g of pure alcohol. View source

  2. [2]

    National Institute on Alcohol Abuse and Alcoholism. (n.d.). What is a standard drink?. United States definition: 14 g (0.6 fl oz) of pure alcohol. View source

  3. [3]

    National Health Service. (2024). Alcohol units. United Kingdom definition and the ABV × ml ÷ 1,000 shortcut. View source

  4. [4]

    National Institute of Standards and Technology. (2017). Ethanol liquid reference data. Reference density: 0.789 g/cm³ at 20 °C. View source