Dimensions Of A Half Sheet Cake. Unless a special half sheet pan is used the typical sheet cake baked at home measure only 13 inches by 9 inches. It can be sliced into 32 2-inch-by-3-inch slices or 48 2-inch-by-2-inch pieces.
A half sheet cake size can vary depending on where you get it from. It can be cut into approximately 48 pieces measuring two inches square. A half sheet cake from a bakery can measure 15 inches by 11 inches 15 12 by 10 12 or 16 by 12 inches.
A bakery-size half sheet cake typically serves between 18 and 40 people depending on the size of the slices.
Half-sheet pans are exactly half the size of full-sheet pans measuring 18 by 13 inches with a side height of about one inchTable of contents1. It can be sliced into 32 2-inch-by-3-inch slices or 48 2-inch-by-2-inch pieces. When you get a half sheet cake from a bakery it is generally either 15 inches by 11 inches 15 12 inches by 10 12 inches or even as big as 16 inches by 12 inches. When you get a half sheet cake from a bakery it is generally either 15 inches by 11 inches 15 12 inches by 10 12 inches or even as big as 16 inches by 12 inches.