Cake pan converter

Convert cake recipes between common pan sizes, including 8 x 8, 9 x 9, 9 x 13, and round cake pans, so you know how to scale ingredients, how the batter depth will change, and when to start checking for doneness.

Recipe pan

Shape

Size

Your pan

Shape

Size

What to change

1.83x

A 9 x 13 pan has about 1.83 times the surface area of an 8 x 8 pan, so start by scaling the batter up by that amount.

Recipe pan: 8 x 8 square pan
Your pan: 9 x 13 square pan
Ingredient change: Multiply each ingredient by 1.83.
Time adjustment: The batter will usually sit shallower in the larger pan, so start checking 5 to 10 minutes earlier.
Temperature: Keep the oven temperature the same unless the recipe says otherwise.

Cake pan converter

8 x 8 baking dishes

Pan liners

Digital scales