What Is a Jelly Roll Pan? Sizes, Dimensions, and How It Differs From a Sheet Pan

A jelly roll pan is a shallow rimmed baking sheet, usually about 10 x 15 inches with 1-inch sides, built for thin sponge cakes you roll without cracking.

Pull a 10 x 15 pan out of the cabinet in place of the 13 x 18 half sheet pan a recipe assumes, and the batter climbs higher, bakes faster, and browns harder at the edges. That single swap is where most disappointing batches start, and it comes down to a pan most people have never measured.

The name is not marketing. A jelly roll is a thin sponge cake spread with filling and rolled into a spiral, and that cake needs a wide, shallow pan so it bakes flat and thin enough to bend without splitting. The one-inch rim holds the batter in without boxing it up, which is why the pan doubles as a bar-cookie and sheet-cake workhorse. Below are the real measurements, the honest overlap with sheet pans, and how to buy the right one the first time.

What Size Is a Jelly Roll Pan?

The common U.S. jelly roll pan measures about 10 x 15 inches with 1-inch-high sides, though the label on the box rarely tells you whether that number describes the inside or the outside.

That gap matters more than it sounds. A pan listed at 10 x 15 may have a baking surface closer to 9.4 x 14.25 inches once the rolled edges are counted, and one brand’s “10 x 15” is another brand’s “11 x 16.” Fat Daddio’s sizing chart, for instance, lists its jelly roll pan at 10 x 15 x 1 inches interior and 11 x 16 x 1 inches exterior — a full inch wider on the outside than the inside. USA Pan’s jelly roll pan shows a 14.25 x 9.375 x 1 inch baking surface against 14.75 x 9.875 x 1 inch outer dimensions.

Older and commercial sources sometimes describe the same pan at 12 x 17 inches, so treat any single figure as approximate until you check the specs on the pan you’re actually buying. When two pans on the same shelf claim the same size, the one that tells you it’s quoting interior dimensions is the one to trust.

How Is It Different From a Sheet Pan?

A jelly roll pan is simply the smallest of the rimmed sheet pan family, so the difference comes down to surface area and how that area changes what you’re baking.

Sheet pans run in standard sizes. A half sheet pan is commonly 13 x 18 inches and about 1 inch deep, a quarter sheet pan is commonly 9 x 13 inches, and the jelly roll pan sits between them but is usually measured against the half sheet. More surface area means more spread, a thinner layer of batter, and shorter baking time for anything poured in.

Rim height is the other split. A rimless cookie sheet gives you nothing to grab and nothing to stop batter from running off a tilted pan, which is fine for drop cookies and useless for a sponge cake. A rimmed pan holds a thin, wet batter in place, and the jelly roll pan’s 1-inch wall is shallow enough to bake that cake evenly across its whole width.

The most common mistake is using a rimless cookie sheet or an oversized half sheet pan where a jelly roll pan belongs. Both change how batter spreads and how fast it sets, and a sponge cake baked on the wrong pan will crack when you roll it. If you’re shopping for the 15 x 10 version specifically, our roundup of the best 15 x 10 inch jelly roll pan options we tested covers the sizing quirks to watch for.

One more naming wrinkle: a jelly roll pan is sometimes sold as a “baking sheet,” a “sheet cake pan,” or a “swiss roll pan,” and the same retailer may use those labels for pans of different actual sizes. Wikipedia’s overview of the sheet pan family tracks the standard sizes and how inconsistently they’re labeled across brands, which is worth a look before you assume two pans match.

How To Pick the Right One

Check the quoted dimensions and the rim height before you buy, because “jelly roll pan” is used loosely enough that the box tells you very little.

• Find the interior size. Look for wording like “baking surface” or “interior.” If the listing only gives outer dimensions, subtract roughly half an inch per side to estimate the usable area.
• Confirm the rim. A jelly roll pan needs a 1-inch wall. A 2-inch pan is a roasting pan, and a flat pan won’t hold a sponge cake batter.
• Match the recipe, not the label. A recipe written for a half sheet pan won’t transfer straight to a jelly roll pan. Expect a thicker layer and a longer bake.
• Buy two if you bake rolls often. Thin sponge bakes quickly and cools fast, so having a second pan ready saves a full cooling cycle.

Line it with parchment or a silicone mat, and the pan works for bar cookies, roasted vegetables, and sheet-pan dinners just as well as it does for cake. A jelly roll pan is not a specialty item you’ll use twice a year — it’s a smaller, shallower sheet pan that earns its shelf space.