You can get a keg in a variety of sizes, but these sizes are standardized, which makes it nice when deciding which type of kegerator to purchase. Kegs come in ½, ¼, and ⅙ of a barrel. A full-sized keg is ½ barrel, which is roughly 15 and ½ gallons. This comes out to 124 pints. ¼ barrel is obviously half of what you get with ½ barrel, so you’ll get around 62 pints. Something to keep in mind when selecting your kegerator is the shelf life for the type of beer you choose. So if you want ¼ barrel and choose a pasteurized beer, you’ll have plenty of time to drink those 62 pints.