How many 20 oz glasses of beer do you get out of a keg?
If you are talking about a full size keg, then it is about 165
12oz beers, or 124 16oz beers.
If you are talking about a half keg, then it is about 82 12oz
beers, or 62 16oz beers.
Obviously there are other sizes, but those are the main
ones.