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Pan size converter

If a recipe calls for a pan you don't have, pick its pan and yours, and this pan size converter shows how much to scale the recipe so the batter comes out the same depth, and what to expect from the bake time.

Updated

The recipe's pan
Your pan

Make about 1¼ times the recipe

That's every amount multiplied by 1.27, and it fills the 9-inch round pan to the same depth as the 8-inch round pan.

The 8-inch round pan is 50 sq in (324 cm²) and the 9-inch round pan is 64 sq in (410 cm²).

If you scale the recipe, the batter sits at about the same depth and bakes in about the same time, though it's worth checking a few minutes early and going by the usual signs of doneness. If you keep the recipe as it is, the batter will be about 21% shallower and will bake faster, so check it well before the time in the recipe.

Scale the ingredients too

Pan size chart: common pans and their areas

Each row gives the area of the pan's bottom, which decides how deep the batter sits. The last column compares each one with a 9-inch round.

PanSquare inchescm²× a 9-inch round
6-inch round281820.44
8-inch round503240.79
9-inch round644101
10-inch round795071.23
8-inch square644131.01
9-inch square815231.27
11 × 7 inch774971.21
13 × 9 inch1177551.84
15 × 10 inch jelly roll1509682.36
18 × 13 inch half sheet23415103.68
8½ × 4½ inch loaf382470.6
9 × 5 inch loaf452900.71

Our lasagna and cinnamon rolls are written for a 9 x 13 inch pan and our banana bread for a 9 x 5-inch loaf pan, so those are the rows to start from if yours is a different size.

A Bundt pan is sold by how many cups it holds, and that number is usually stamped on the bottom. The common sizes hold 6, 10 and 12 cups.

Swaps that work

The recipe's panYour pansScale byWhat to do
13 × 9 inchtwo 9-inch round pans1.09Fits as is, a little thinner or thicker
13 × 9 inchtwo 8-inch square pans1.09Fits as is, a little thinner or thicker
13 × 9 inchtwo 8-inch round pans0.86Make 0.86 of the recipe
9-inch squarea 9-inch round pan0.79Make 0.79 of the recipe
8-inch squarea 9-inch round pan0.99Fits as is, a little thinner or thicker
8-inch rounda 9-inch round pan1.27Make 1.27 times the recipe
11 × 7 incha 9-inch square pan1.05Fits as is, a little thinner or thicker
9 × 5 inch loafa 8½ × 4½ inch loaf pan0.85Make 0.85 of the recipe

Questions people ask

Can I bake a 9x13 recipe in two 9-inch round pans?

Yes. Two 9-inch rounds have about 127 square inches between them and a 13 × 9 pan has 117, so the layers come out a little thinner and bake a few minutes faster.

How do I convert a round pan to a square one?

Compare their areas. An 8-inch square holds about the same as a 9-inch round (64 and 64 square inches), so a 9-inch round recipe fits an 8-inch square as is. A 9-inch square is about 27% bigger, so scale the recipe by 1.27.

What size is a half sheet pan?

18 × 13 inches, about twice the area of a 13 × 9 pan. A quarter sheet is 13 × 9.

Does pan size matter for brownies and bars?

Yes, because their texture depends on how thick they are. In a bigger pan they come out thin and can dry out; in a smaller one the middle stays underbaked. Scale the recipe to the new pan and the texture stays the same.

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