MiniCalci

Calculators & Converters
Cooking & Kitchen

Cake Pan Converter

Free cake pan converter and recipe size calculator. Easily substitute an 8-inch square pan for a 9-inch round pan, convert to 9x13, or scale batter volume and bake times.

Enter an ingredient quantity from your recipe (e.g. 2 cups flour) to calculate the exact scaled amount:

Can I pour this batter in a different pan?

Batter volume has to match pan volume or the cake overflows or comes out short. This page compares common US pans (8-in round, 9-in round, 8-in square, 9×13, Bundt) and gives a scale factor for the recipe quantities.

Bake time will change

A shallower 9×13 bakes faster than two deep 8-in rounds. Use the factor for ingredients, then start checking early with a toothpick. Related: recipe scaler for servings, oven temperature if the recipe is in Celsius.

Frequently Asked Questions

Can I substitute an 8-inch square pan for a 9-inch round pan?
Yes! An 8-inch square pan has an area of **64 square inches**, while a 9-inch round pan has an area of **63.6 square inches**. Their volumes are virtually identical (within 0.6%), so you can bake the recipe with **no ingredient scaling and no time adjustments needed**.
How do I convert a 9-inch round cake recipe to a 9x13 inch pan?
A single 9-inch round pan is ~64 sq in, while a 9×13 pan is 117 sq in. To bake in a 9×13 pan, **multiply all recipe ingredients by 1.83×** (or double the recipe if substituting for two 9-inch round cake layers, where combined area is 127 sq in).
How does changing pan size affect baking time?
If your target pan is larger (spreading the batter thinner), the cake will bake faster—reduce baking time by 5 to 10 minutes and test with a toothpick early. If the target pan is smaller (making the batter deeper), lower the oven temperature by 25°F (15°C) and increase bake time by 10 to 15 minutes to prevent the edges from burning before the center cooks through.
How many cupcakes in a 9-inch round cake recipe?
A standard one-layer 9-inch round cake recipe makes **12 to 14 standard cupcakes**. A two-layer 9-inch round cake recipe makes **24 standard cupcakes** (bake at 350°F / 175°C for 18–22 minutes).

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Recipe Scaler

Scale ingredients up or down for any number of servings.

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Cups to Grams

Convert flour, sugar, butter, and dry ingredients from cups to grams.

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Oven Temp Converter

Convert baking temperatures between Fahrenheit, Celsius, and Gas Mark.

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