Hoping someone in the industry will chime in here. Standard 1/2 barrel = 15.5gal = 1984oz Ok, no argument here. And I can divide that by 16oz to get 124 pints. But what I really want to know is how head translates into liquid. What I mean is this. Let's say for argument's sake that 3 of those 16oz of beer is head (I realize that this will vary). I know I can't just say, "ok, just divide 1984 by 13 and get 153" because some percentage of that foam translates into beer. So how many "pints" do you really get out of a keg? I was thinking the 3oz of head translates to maybe an ounce of beer so somewhere around 140, maybe. Would love to hear from you bar owners and brewers. Thanks for looking.