Keg Calculator
Find out how many servings a keg pours by size and how many kegs you'll need for your guests over the party.
How many kegs for a crowd?
A half barrel holds 15.5 gallons — that is 1,984 ounces, or about 165 twelve-ounce pours. A quarter barrel is half that (~82 pours) and a sixtel about 55. The crowd estimate reuses the party-drink model (roughly 1.25 drinks per guest per hour) and assigns your beer percentage to kegs, rounding up to whole kegs.
How it works
Kegs are priced by the barrel fraction, not by how many beers they hold, which makes it easy to under-order. A half barrel is 15.5 gallons — 1,984 ounces — so at a standard twelve-ounce pour it gives about 165 beers. A quarter barrel is half of that, and a sixtel roughly a third.
Change the pour size and the servings shift with it: solo cups filled to ten ounces stretch a keg further, while heavy sixteen-ounce pints cut the count down. The tool floors the servings, because a half-poured last beer doesn't count.
The second half estimates how many kegs to actually order. It reuses the party-drink model — about 1.25 drinks per guest per hour — and assigns the share of your crowd drinking beer to kegs, rounding up to whole kegs since you can't buy a fraction.
Frequently asked questions
How many beers are in a half-barrel keg?
A half barrel holds 1,984 ounces, which is about 165 twelve-ounce servings. A quarter barrel pours around 82 and a sixtel about 55 at the same pour size.
Does pour size really matter that much?
A lot. At sixteen ounces a half barrel drops from 165 servings to about 124, and generous ten-ounce cups push it near 200. Match the pour to your cups before you count on a number.
How many kegs do I need for my party?
Enter your guests, hours, and the share drinking beer. The tool works out total beer servings from the drink model and divides by servings per keg, rounding up so you don't tap dry.