How many units in a pint of Guinness?

One pint of Guinness stout contains 2.3 units of alcohol. The ABV of draught Guinness is 4.1%. Each 100ml of draught Guinness contains 0.41 units of alcohol.

Guinness and UK alcohol unit guidance

The UK Chief Medical Officers advise that it is not safe to drink more than 14 units a week on a regular basis (source).

6.0 pints of draught Guinness contains 14 units of alcohol.

6
PINTS
One pintOne pintOne pintOne pintOne pintOne pint
14
UNITS
APPROX

Guinness data from Open Units

ProductGuinness
CategoryBeer
StyleStout
BrandGuinness
Quantity1
Quantity Unitspint
Volume568ml
Packagedraught
ABV4.1%
Units of Alcohol2.3
Units (4 Decimal Places)2.3288
Units per 100ml0.41

Units in other stouts