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How much am I drinking?

Measuring drinks

When we drink an alcoholic beverage, there are so many variables that it is difficult to keep track of how much alcohol we are consuming. Glasses, cans and bottles come in different sizes. Different drinks contain different percentages of alcohol. The simplest way to measure your intake of alcohol is in Standard Drinks.
 

What is a Standard Drink?

In Ireland a Standard Drink has about 10 grams of pure alcohol in it. In the UK a Standard Drink, also called a unit of alcohol, has about 8 grams of pure alcohol.

Here are some examples of a Standard Drink:

A bottle of wine at 12.5% alcohol contains about seven Standard Drinks.

A Standard Drink is a drink that contains 10g of pure alcohol.
(10g is the weight of about 12.7 ml of pure alcohol)

In Ireland at present, bottles and cans do not indicate the number of Standard Drinks they contain. So, if you want to know how much you are drinking, you need to know how many standard drinks are in a typical bottle or glass.


A rough guide to Standard Drinks is as follows:

The  drink

The strength

The amount

Number of Standard Drinks

 

 

Beer

Lager

Stout

 

 

Normal strength (about 4.5%)

Half pint

1

Pint

500 ml can

2

 

Strong (7%)

Half pint

Pint

500 ml can

3

Cider

 

6%

 

Pint

500 ml

Wine

12.5%

Quarter bottle (185.7ml)

2

750ml bottle

14%

 

Quarter bottle (185.7ml)

2

750ml bottle

Spirits (Vodka, Whiskey, Gin, etc.)

40%

750ml bottle

24

40%

Single measure in a pub (35ml)

1


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