Most people know what a keg is. Fewer people know there are multiple sizes — and that picking the wrong one for your event, your kegerator, or your budget can be an annoying mistake to sort out after buying.
The two sizes that come up most often are the pony keg and the sixtel. They’re both smaller than the standard half barrel you’ve probably seen at big parties, and they’re both practical options for home use or smaller gatherings. But they’re not interchangeable. Here’s how they compare.
Pony Keg vs Sixtel
The simplest way to think about it: a pony keg is shorter and fatter, and holds more beer. A sixtel is taller and narrower, holds less beer, and is more likely to fit in a standard fridge or kegerator without modification.
| Pony Keg | Sixtel | |
| Also called | Quarter barrel | Sixth barrel, torpedo keg |
| Volume | 7.75 gallons | 5.16 gallons |
| 12 oz. servings | ~82 | ~55 |
| Height | ~16.5 inches | ~23.4 inches |
| Diameter | ~16.1 inches | ~9.25 inches |
The pony keg holds roughly 50% more beer than a sixtel. But the sixtel’s narrower profile makes it easier to store and transport, and its taller shape fits many kegerator setups designed around home refrigerators.
Neither is universally better. It depends on how many people you’re serving, what equipment you have, and how much of a specific beer you actually want.
How Many Beers Is a Pony Keg?
A pony keg holds 7.75 gallons, which works out to roughly 82 twelve-ounce servings. In pint glasses, you’re looking at around 62 pours.
That makes a pony keg a solid choice for a backyard party of 30 to 50 people, depending on how long the event runs and how enthusiastically people are drinking. As a rough guide: figure one 12-ounce serving per person per hour, and plan accordingly.
One thing worth knowing: you won’t get exactly 82 clean pours out of any keg. Foam happens, especially when a keg is first tapped or if the temperature or pressure isn’t dialed in. Budget a few pours of foam into your math and you won’t run out unexpectedly.
How Many Beers Are in a Sixtel Keg?
A sixtel holds 5.16 gallons — about 55 twelve-ounce servings or roughly 41 pints.
That’s the right quantity for a smaller gathering of 15 to 25 people, a home kegerator that sees regular but not constant use, or a situation where you want draft beer available without committing to a large volume of one specific brew. Some people run two sixtels at once — different styles on tap simultaneously — which is one of the better reasons for going smaller.
The sixtel is also the practical choice if you’re working with a standard kegerator built around a converted refrigerator. Its 9.25-inch diameter fits through most fridge doors and stands upright inside without the clearance issues a pony keg can create.
What Is Another Name for a Pony Keg?
A pony keg is also called a quarter barrel or quarter keg — because it’s one quarter of a full barrel (a standard half barrel is itself half of a full barrel, and a pony keg is half of that).
In bar and distributor conversations, you’ll hear it referred to as a “quarter” more often than a “pony keg.” If you call your local distributor and ask for a quarter barrel, they’ll know exactly what you mean.
The sixtel goes by a few names too: sixth barrel, sixth keg, or occasionally a torpedo keg — the latter being a nickname that comes from its tall, narrow shape.
Which Size Is Right for Your Event?
Here’s a simple breakdown based on common situations:
Go with a pony keg if:
- You’re hosting 30 or more people for a few hours
- You have a chest-style kegerator or a converted cooler setup
- You want more beer from a single tap without swapping kegs mid-party
- You’re buying a popular domestic or craft beer that you know will get consumed
Go with a sixtel if:
- You have a standard upright kegerator
- You’re serving a smaller group or hosting a longer, slower event
- You want two different beers on tap at once
- You’re trying a new beer and don’t want to commit to 82 servings of it
Consider a half barrel if:
- You’re hosting 80 or more people
- You’re running a serious setup with a dedicated kegerator or jockey box
- You know the beer will get fully consumed — half barrels are a bad call if you’re not sure about volume
What About Keg Equipment?
A keg by itself doesn’t pour beer. You’ll need a coupler (the tap that connects to the keg valve), a CO2 tank and regulator to push the beer, and a faucet or jockey box to pour from. Most U.S. domestic beers use a standard D-coupler; imported and some craft beers use different coupler types, so it’s worth checking before you buy.
If you don’t already own keg equipment, factor that into your planning. Renting or borrowing a jockey box for a one-time party is often more practical than buying a full setup you’ll use twice a year. We can usually point you in the right direction when you come in.
Frequently Asked Questions
How long does a keg stay fresh once it’s tapped?
A tapped keg kept under CO2 pressure stays fresh for roughly 45 to 60 days in a properly refrigerated setup. Without CO2 — using a hand pump, for example — you’re looking at 12 to 24 hours before the beer starts to go flat and stale. For party use with a hand pump, plan to finish the keg the same day.
Do I need to refrigerate a keg before tapping it?
Yes. A keg that goes from room temperature to tap will foam excessively. Give it at least 24 hours in a cold environment — ideally 38°F — before you plan to pour from it. If you’re picking it up the day of an event, pack it in ice immediately.
Can I return a pony keg or sixtel for a deposit refund?
Yes, kegs carry a deposit that gets refunded when you return the empty. The deposit amount varies by brand and keg size. Hold onto your receipt to receive the refund.
Which keg size do craft breweries typically offer?
It varies. Most large domestic breweries offer both pony kegs and sixtels. Craft breweries often favor sixtels because smaller volumes work better for seasonal and limited releases. If you’re looking for a specific craft beer on draft, sixtel is usually the more available format.
Buy Beer Kegs in Warrington, PA
We stock both pony kegs and sixtelsat Bound Beverages — domestic standards as well as craft options depending on the season and what’s moving. Keg inventory shifts, so if you’re planning around a specific beer or brand, call us at (215) 491-6600 ahead of time or visit our kegs lists page to know what’s available and whether we can have it ready for you.
We’re at 308 Easton Road in Warrington, open Monday through Saturday 9AM to 9PM and Sunday 10AM to 6PM.