Alcohol units are calculated using: (ABV × Volume in ml) ÷ 1000.

Most alcohol-free beers contain very few alcohol units, although some may contain trace amounts of alcohol.

This depends on the bottle size and ABV. A 500ml bottle of 5% beer contains approximately 2.5 alcohol units.

UK guidelines recommend not regularly exceeding 14 alcohol units per week.

A pint of 5% IPA contains approximately 2.84 alcohol units.

A pint of Guinness Draught contains approximately 2.39 alcohol units.

A typical pint of 4% lager contains approximately 2.27 UK alcohol units.