i have a customer who wants a sheet cake to feed 100 people. i have no ideas .the sheet pans that i have are 9 by 13 11 by 15 and 12by 18. thanks for the help

12 x 18 feeds roughly 80 people, the next size up, 14 x 22 would feed 120. HTH

Here's the link to Wilton's cutting guides. For party slices, the largest pan will serve 72. Good Luck!

http://www.wilton.com/cakes/cake-cutting-guides/party-cake-cutting-guide.cfm

http://www.wilton.com/cakes/cake-cutting-guides/wedding-cake-cutting-guide.cfm

I have an order due this Friday for a sheet to feed 100. I will be stacking 2 12x18 for 108 servings according to Indydebi's chart.

thanks is there a 14 by 22 pan? are do i have to put them togther to make that size?

I am not for sure, but if you do two of the 11 x 15 put them side by side and make one large one that will serve around 100. If not wanting one that large. Double the 12 x 18 and tell them to cut smaller pieces because it will double layer and you should have more than 100. When I want one to fee 100 I have the square 16 in and double that. It is alot of cake.

I don't know about the 14 x 22 pan, I just got that info off the cutting chart someone posted on cc last week that I copied