How Much Beer Is In A Keg: Complete Guide & Key Details

Planning a party? Hosting a backyard barbecue? Or perhaps you're just a curious beer aficionado wondering about the true volume of that glorious metal cylinder? You've stumbled upon a topic that's both incredibly practical and surprisingly fun: the humble beer keg. Understanding how much beer resides within a keg isn't just for trivia night; it's your secret weapon for ensuring your guests are happy, your budget is on track, and your celebrations run smoothly. Forget those flimsy six-packs and the endless trips to the cooler. When you're ready to go big, the keg is king, and knowing its secrets unlocks a world of stress-free hosting.
The Mighty Keg: More Than Just a Big Can
So, what exactly is a keg and why do we love them? At its core, a keg is a container designed to hold and dispense beverages, most commonly beer, under pressure. But its purpose extends far beyond mere storage. Kegs are the champions of volume pouring, offering a consistent and refreshing stream of your favorite brew. Think about it: no more opening a dozen bottles, no more warm beer at the bottom of the cooler. A well-tapped keg delivers cold, perfectly carbonated beer from the first pour to the very last drop. The benefits are undeniable for any event, from intimate gatherings to raucous festivals. You get more beer, less fuss, and a seriously impressive centerpiece for your beverage station.
Decoding the Keg Sizes: A Pint-Sized Problem Solved
Now, let's get down to the nitty-gritty. The question that likely brought you here is: "How much beer is actually in a keg?" The answer, as with many things in life, is: it depends! Kegs come in a variety of sizes, each catering to different needs and event scales. The most common keg sizes you'll encounter are:
Full-Size Kegs: These are the titans of the keg world. You'll typically see these at larger events and breweries.
Different Keg Sizes | Best Kegerator Guide
- Half Barrel (or Full Barrel): This is what most people picture when they think of a "keg." It holds 15.5 gallons of beer. That translates to roughly 165 12-ounce pints or about 198 10-ounce pours (perfect for those fancy craft beer glasses). This is a fantastic option for medium to large parties where you want to keep the beer flowing without constant restocking.
- Shorty Keg (or Quarter Barrel): This is a slightly smaller but still substantial option, holding 7.75 gallons. That's about 82 12-ounce pints. It's a great choice for smaller gatherings, weekend getaways, or if you want to offer a couple of different beer varieties without committing to two full-size kegs.
Micro Kegs & Keglets: For smaller occasions or when you just want a taste of something special, these smaller options are ideal.
- Sixth Barrel (or Sixtel): This popular size holds approximately 5.16 gallons, which is about 55 12-ounce pints. It's a favorite for home bars and smaller events where you want a good amount of beer but not an overwhelming quantity.
- Slim Quarter (or Slim 1/4): Similar to a Shorty Keg but narrower in diameter, this also holds 7.75 gallons.
- Corny Keg (or Cornelius Keg): While often used for homebrewing and soda, these are also available for beer. They typically hold around 5 gallons, equating to about 53 12-ounce pints. They are known for their versatility and ease of use in home setups.
It's important to note that these are standard measurements, and slight variations can occur depending on the manufacturer. Always confirm the exact capacity when renting or purchasing a keg.

Beyond the Gallons: Key Details for Kegging Success
Knowing the volume is crucial, but there are a few other key details that make using a keg a success:
- Tap System: To get that delicious beer out, you'll need a tap system. This typically involves a CO2 tank (or nitrogen for certain styles), a regulator to control the pressure, hoses, and a tap handle. The type of tap system you choose can impact the carbonation level and dispense rate.
- Pressure: Maintaining the correct pressure inside the keg is vital for proper carbonation and dispensing. Too little pressure and your beer will go flat; too much and it could foam excessively. Your tap system's regulator will help you manage this.
- Temperature: Beer is best served cold! Keeping your keg chilled is paramount. This usually involves a kegerator (a refrigerator specifically designed for kegs) or a large cooler filled with ice.
- Cleaning: Proper cleaning of your keg and tap lines is essential for maintaining the taste of your beer and preventing contamination. Nobody wants a funky-tasting pint!
So, the next time you're faced with a party and a keg, you'll have a much clearer understanding of the liquid gold you're dealing with. From the impressive volume of a half barrel to the more manageable size of a sixtel, the beer keg is a fantastic way to elevate any occasion. Cheers to knowing your keg!

