I have had people give me so many different sizes for sheet cakes what do you all use for 1/4 sheet 1/2 sheet and a whole sheet cakes.
I use 9x13 for 1/4, 11x15 for 1/2 and 12x18 for my full sheet cake.
12x18 is a half sheet. 24x18 is a full sheet. These are industry standards.