9x13 to Two 8-Inch Round Cake Pans

To bake a 9x13 recipe in two 8-inch round pans, multiply every ingredient by 0.86.

The answer

×0.86

Multiply every ingredient by 0.86.

One 9 x 13 inch pan holds about 16.2 cups to the brim and 2 × 8-inch rounds about 13.9 cups, so the new pans take 86% as much batter to fill them just as full.

Scale my ingredients ×0.86

Baking it in two 8-inch round pans

  • Keep the same temperature.
  • Faster than your recipe says: start checking 5–10 minutes early. A typical butter cake in this pan bakes about 30–35 minutes.

Using the recipe as it is

Too much for these pans: they'd be 16% fuller than your recipe's pan. Fill them no more than two-thirds full and bake the rest as cupcakes.

Your ingredients at ×0.86

What common amounts in a 9x13 recipe become in two 8-inch round pans. Weighing is the most accurate way to scale.

In the recipeUse
1 cup (flour, sugar, milk)¾ cup + 2 tbsp
2 cups1½ cups + 3 tbsp
250 g of any weighed ingredient215 g
1 stick of butter (113 g, ½ cup)97 g
3 large eggs (about 150 g out of the shell)129 g beaten egg (about 2½ eggs)
1 tsp (baking powder, baking soda, salt, vanilla)⅞ tsp
1 tbsp2⅝ tsp

Try your own pans

Set to this swap. Change the size, the depth or how many pans, or switch to cm.

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Common sizes

Size

in
in
in

Measure inside the top edge. Left blank, the depth is 2 in.

Common sizes

in
in

Measure inside the top edge. Left blank, the depth is 2 in.

Times 0.86. Multiply every ingredient by 0.86.

Your recipe

×0.86

Multiply every ingredient by 0.86.

From one 9 x 13 inch pan to 2 × 8-inch rounds. Scaled this way, it fills the new pan just as full.

Scale my ingredients ×0.86

Odd number of eggs? Beat them and weigh: one large egg is about 50 g (1¾ oz).

Baking it in the new pan

  • Keep the same temperature.
  • Faster than your recipe says: start checking 5–10 minutes early. A typical butter cake in this pan bakes about 30–35 minutes.

Or pour the recipe in as it is

Too much for these pans: they'd be 16% fuller than your recipe's pan. Fill them no more than two-thirds full and bake the rest as cupcakes.

Your recipe also fits these, as it is:

  • 13 x 18 inch pan
  • 3 × 7-inch rounds
  • 12-inch round
  • 2 × 9 x 5 inch loaves
  • 10-cup bundt
  • 22 standard cupcakes

Questions bakers ask

How do I convert a 9x13 recipe to two 8-inch round pans?

To bake a 9x13 recipe in two 8-inch round pans, multiply every ingredient by 0.86. One 9 x 13 inch pan holds about 16.2 cups to the brim and 2 × 8-inch rounds about 13.9 cups, so the new pans take 86% as much batter to fill them just as full.

What temperature and time for two 8-inch round pans?

Keep the same temperature. Faster than your recipe says: start checking 5–10 minutes early. A typical butter cake in this pan bakes about 30–35 minutes.

Can I use a 9x13 recipe as it is in two 8-inch round pans?

Too much for these pans: they'd be 16% fuller than your recipe's pan. Fill them no more than two-thirds full and bake the rest as cupcakes.

What other pans take a 9x13 recipe without changes?

13 x 18 inch pan, 3 × 7-inch rounds, 12-inch round, 2 × 9 x 5 inch loaves, 10-cup bundt, 22 standard cupcakes. Each holds within about 12% of the same batter, so the cake comes out just a little thinner or taller.

More pan conversions

Full pan size conversion chart

Selling it?

A different pan changes what the cake costs you

×0.86 the batter is ×0.86 the ingredient cost. Price the new size from what it really costs to make.