Cake pans

I usually call for standard round cake pans of 9 inches (actually 9½ inches), though sometimes I specify 8-inch or 10-inch pans (these are also standard sizes). Keep in mind that cakes shrink, such that a cake baked in a 9½-inch pan will end up being 9 inches. Sheet pans are of a standard size, called a “half sheet pan” in the industry. They measure approximately 13 by 17 inches with 1-inch-high sides.