Cake Pan Size Converter

Convert any cake recipe from one pan shape/size to another.

Original pan

Shape

Dim 1 (in)

Dim 2 (in)

Target pan

Shape

Dim 1 (in)

Dim 2 (in)

Volume scale factor

1.328×

Original recipe

Converted recipe

2.99 cup flour
1.99 cup sugar
3.98 piece eggs
1.33 cup milk
0.66 cup butter
1.33 tsp salt
1.33 tsp baking powder

Pan volume math: round / bundt = π × r² × h; square / rect / loaf = L × W × H. Bake time scales roughly with pan depth — adjust ±25%.

About this tool

Pick source and target pans from round, square, rectangle, bundt, loaf, and cup volumes, set your recipe's original yield, and get the adjusted ingredient amounts. Targets the persistent r/Baking 'how do I convert this 9-inch round to a 9×13' question.

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