Do you need a pan for a recipe that you don’t have in the cupboard? Can you switch one dish out for another? Our baking dish and casserole conversion guide will help take away the guesswork.

six different baking pans and dishes

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Baking Dish and Casserole Conversion Guide

We’ve all been there—your 8×8 square pan may already be full of brownies, and you need it to make a casserole. Or you want to do a sheet cake with a recipe that tells you to use 9-inch cake rounds. It’s impossible to have every dish for every occasion! It can feel overwhelming to figure out how to make substitutions. But don’t worry, we’ve rounded up some tips below to help when you’re in a pinch.

round cake pan with a wood ruler sitting on top

How to Measure a Dish or Pan

First things first, let’s figure out how to measure the size of a pan. There are a few easy ways to do this:

  • Look at the bottom of the pan. This is the simplest way to determine the dimensions of your pan or dish. Often the dimensions or capacity is shown on the bottom. 
  • Manually measure your dish. If your pan doesn’t show the dimensions, you can use a tape measure to find out the dimensions of the pan. You’ll want to measure the dish from inner rim to inner rim. 
  • Determine volume. A quick way to find out the volume of your pan or dish is to pour water from a measuring cup into the dish, filling it to the top. Make sure you keep track of how many cups you’ve poured in! Now you’ll know how much the dish can hold (or in other words, its capacity).

Know Your Standard Baking Sizes

Here’s a list of some familiar and commonly sized baking dishes you may already own. For baking, you’ll have the best success with 2-inch deep pans when you want to convert a recipe.

  • 9” x 13” x 2”
  • 8” square and/or 9” square (2” deep)
  • 8” round and/or 9” round (2” deep)
  • 9” (10-cup) or larger Bundt
four different type of baking pans

Tips for Success

  • Using 2-inch deep dishes and pans for baking will give the best results.
  • Measure the bottom surface area of pans so you can figure out which pans will substitute best for one another.
  • A recipe calling for a 9” square pan can be baked in an 8” x 12” oval casserole as-is, or it can be increased by 50% and baked in a 9” x 13” pan.

Quick and Easy Conversion Chart

9x5x3 loaf pan2 quarts
8x8x2 square pan2 quarts
9x9x2 square pan2 1/2 quarts
11x7x2 rectangular pan2 1/2 quarts
9x13x2 rectangular pan3 quarts
14x10x2 rectangular pan4 quarts


What is the difference between a baking dish and a casserole dish?

A casserole dish can be various sizes, including 9×13, like a traditional baking dish, but it’s sometimes round or oblong. A baking dish is sometimes called a casserole dish. A baking dish is always a casserole dish, but a casserole dish is not always a baking dish. Sounds complicated, but the main takeaway is that you can swap dishes based on their size and volume and don’t have to worry too much about the actual shape.

Is an 8×8 pan half the size of a 9×13?

The area of a 9×13 pan is 117 square inches. The area of an 8×8 pan is 64 square inches, or close to half that of a 9×13 pan. This means you can scale a recipe down from a 9×13 pan to an 8×8 pan just by halving the recipe.

What is equal to a 9×13 pan?

An 8” square pan and a 9” round pan can be used interchangeably for cake and bar (or brownie) recipes. A recipe written for a 9×13” pan can also be made in two 9” round pans, one 9” round and one 8” round, or two 8” round pans.


About Kasey Schwartz

For over 15 years, Kasey Schwartz, the mastermind behind All Things Mamma, has been the ultimate go-to for mouthwatering family recipes. Her work has been featured on, Buzz Feed, Better Homes and Gardens, and more, making her your go-to mom next door for all things delicious and family-friendly.

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