For a shortcut, remember that a 9-inch round cake pan holds about 6 cups (if the batter is 1 1/2 inches deep). A 13-by-9-inch pan holds 12 cups.

If you're baking for larger numbers, simply re-run the calculator for a second batch. Recipes for larger layer cakes mix and bake one layer at a time, so you can mix a manageable amount of batter ...

We checked in with Belton and other baking experts for their favorite baking tools and tips, and rounded up a few more of our own. Here are 30 to get you started. We’re feeling more relaxed already.