The number of beers in "1" depends on what "1" refers to-if you mean "1 unit of alcohol" or "1 standard drink," here are the clarifications:

• In the UK, one unit of alcohol equals 10 ml (8 grams) of pure alcohol. A typical 330 ml bottle of beer with 5% ABV contains about 1.7 units, and a pint (568 ml) of strong lager at 5.2% ABV contains about 3 units

• In the United States, one standard drink contains about 14 grams (0.6 fluid ounces) of pure alcohol. A 12-ounce (355 ml) beer at 5% ABV is considered one standard drink

• To compare shots and beers: one 12 oz (355 ml) beer at 5% ABV contains roughly the same amount of alcohol as one 1.5 oz shot of 40% ABV spirits

So, if you are asking how many beers equal one unit of alcohol, roughly:

• About half to one standard bottle (330 ml) of 5% beer equals 1 unit (since a 330 ml bottle has about 1.7 units)

If you mean how many beers equal one standard drink (US definition):

• One 12 oz beer at 5% ABV equals one standard drink

In summary:

• 1 UK alcohol unit ≈ half to one small beer (330 ml, 5% ABV)
• 1 US standard drink ≈ one 12 oz beer (5% ABV)

If you clarify what "1" refers to, I can provide a more precise answer.