How does Alcohol percentage work?

Question

Trying to figure this out, I drank an 8% Stout. Is this the same as drinking two 4% beers or am I stupid?

Quick edit: I drink three 8% stouts, I assume this is the equivalent of six 4% beers of the same volume?

In: 3

Answer 1

Abv is alcohol by volume. So 350ml of beer at 4% would be 14ml of alcohol. At 8% it would be 28ml. So yes (as long as you consume the same overall volume of beer)