BestKegerator

When you buy through our links, we may earn a commission. Learn more ›

Quarter vs Sixth Barrel Keg for a Kegerator

Short answer: The quarter barrel and the sixth barrel are size names on kegerator listings. The quarter barrel is the larger size, and the sixth barrel is the smaller one. The choice affects how many beers you can put on tap and how much cabinet room you need. Read the listing's stated keg size compatibility, cabinet width, and tap count, then match the keg to your space and your tap plan.

What quarter barrel and sixth barrel mean on a listing

Kegerator listings use keg size names such as quarter barrel and sixth barrel as compact labels for what the cabinet is built to hold. Quarter means one quarter of a barrel, sixth means one sixth. The quarter barrel is the larger of the two sizes, and the sixth barrel is the smaller one. These are traditional names, not brand names, and they appear the same way across listings from different makers.

On a listing, the size name may appear in the title, in the bullet list, or in the key features section. It is a planning label: it tells you the scale of the cabinet and how much beer you can put on tap. It does not tell you the weight of the filled keg, the number of servings in the keg, or how long a keg lasts once tapped. Those figures are not given on most kegerator listings, and when a seller does not provide them, the listing will usually say "not stated by the seller."

If you are new to keg size names, start with keg size compatibility and keg types.

The quarter barrel size in listings

A quarter barrel is a common home size on kegerator listings. It is a medium-large keg name. In a title you will often see it paired with a full-size cabinet or a wider undercounter model, and it is a frequent match for two tap towers or more.

For planning, a quarter barrel suits a buyer who wants several beers on tap at the same time or a busier home bar. The larger size means the cabinet has more interior room, so the unit is usually built wider. If you are comparing listings, look at the stated cabinet width and the tap count together with the keg size name.

See full size kegerators and dual tap kegerators if this size matches your plan.

The sixth barrel size in listings

A sixth barrel is a smaller keg name. It appears on compact cabinets, including 15 inch models and some conversion refrigerators. The smaller size lets the cabinet fit into a tight floor plan, such as a kitchen run or a small bar.

For planning, a sixth barrel is a good match for one tap, a small space, or a buyer who changes the beer often. It takes up less interior space and can leave room inside the cabinet for shelves or other stored items. It is also a sensible size for a first kegerator in an apartment or a garage.

See 15 inch kegerators and conversion refrigerators for compact options.

Choosing between the two sizes

The right size is the one that fits your cabinet and your tap plan. Count the taps you want: a single tap can work with either size, while a dual or triple tap setup leans toward the larger quarter barrel. Measure the space you have in mind and compare it to the cabinet width on the listing. A wider cabinet can accept a quarter barrel; a narrow 15 inch cabinet is usually built around a sixth barrel.

Think about variety. If you want more than one type of beer on tap at a time, the larger size gives you a longer run before you have to change the keg. If you prefer to swap often, the smaller size is easier to manage. There is no universal best; the listing states the size it is built for, and the choice depends on your space and how you plan to use it.

  • Read the keg size name in the title.
  • Confirm the cabinet width in the bullet list.
  • Check the tap count on the listing.
  • Look for the words not stated by the seller when a detail is missing.
  • Ask the seller if the size is unclear.

What a listing does and does not say about keg size

A listing that names a quarter barrel or sixth barrel tells you the intended keg size for that cabinet. It should also state the cabinet width, the number of taps, and whether the keg is included. Those details together describe the plan for the unit.

What a listing usually does not say is the weight of the filled keg, the exact number of servings, or how long a single keg lasts once tapped. Those are not stated details on most kegerator listings. The safe way to plan is by the size name and the cabinet dimensions the seller gives, and to ask for any figure that is missing before you buy.

If a detail is missing, the listing page will often say "not stated by the seller." That phrase means the seller has not provided the figure, not that the figure is zero. Treat missing details as a question to ask, not as a thing to assume.

Read dimension planning and tap counts for the rest of the checklist.

What to pick for your situation

If youPickBuying guide
You have one tap and a small spaceA sixth barrel size listingBest 15 Inch Kegerators in 2026: 4 Picks by Specs
You want two taps in a standard cabinetA quarter barrel or dual tap listingBest Dual Tap Kegerators in 2026: 13 Picks by Specs
You have a full-size cabinet and want varietyA quarter barrel size listingBest Full Size Kegerators in 2026: 10 Picks
You are outfitting a shared space or a small venueA quarter barrel with a wider cabinetBest Commercial Kegerators in 2026: 13 Picks by Specs
You are converting an existing refrigeratorA sixth barrel size that fits the conversionBest Kegerator Conversion Refrigerators in 2026: 7 Picks
You want the widest range of keg sizesA 24 inch cabinet listingBest 24 Inch Kegerators in 2026: 15 Picks by Specs

Questions

Is a quarter barrel larger than a sixth barrel?

Yes. The names are fractions of a barrel: quarter means one quarter, sixth means one sixth. The quarter barrel is the larger size, and listings use these names to indicate the intended keg for the cabinet.

Can a sixth barrel fit in a quarter barrel cabinet?

Generally a smaller size can fit in a cabinet built for a larger size, but the fit depends on the stated dimensions and the tap setup on the listing. Read the cabinet width and keg size compatibility before you buy.

What should I read to know the keg size in a listing?

Look for the size name in the title or bullet list, the stated cabinet width, and the tap count. If the listing does not say the keg size, treat it as "not stated by the seller" and ask before planning around it.

Which is better for a single tap?

A single tap works with either size. The sixth barrel is easier to plan for a compact cabinet, while the quarter barrel gives a longer run before a change. Match it to your space and how often you want to swap the keg.

Does the keg size affect the number of taps?

The keg size and the tap count are separate details on a listing. A cabinet can be built for a quarter barrel with a single tap, or a sixth barrel with a single tap. The two are not locked together, so read both.

What does "not stated by the seller" mean on the size line?

It means the seller has not provided that detail for the listing. The size name may still appear in the title, but the exact figure is not given, so you should contact the seller before making a decision.

Recent updates

  • : First published.

Sources

Related buying guides