Sheet Cake Sizes

Decorating By Kimlee Updated 18 Mar 2008 , 3:34am by indydebi

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Kimlee Posted 17 Mar 2008 , 6:33pm
post #1 of 5

I am making a sheet cake for about 80-100 people. I have always made 1 9x13 white cake and 1 9x13 choc cake for a 1/2 sheet- Is this the correct thing to do? For a full sheet would I use 4 of the 9x13 cakes and piece together or should i just use the 15x20 sixze? Will this be enough for 80-100people. Thanks for help in advance.

4 replies
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beachcakes Posted 17 Mar 2008 , 7:24pm
post #2 of 5

"sheet" size seems to vary where you live. Two double-layer 9x13 would serve approx. 90. Here's a Wilton chart for party cakes -

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kakeladi Posted 17 Mar 2008 , 8:35pm
post #3 of 5

A 9x13x2" cake should serve 20 2x2x2" pieces.
Double that = 40 whether you make it 18x13x2 or 9x13x4.
To serve 80-100 you will need 4 or 5 9x13s no matter how you put them togetehr. If they are 4" tall then the 'slice' will be 1x2x4; if the cake is 2" tall the 'slice' is 2x2x2 -- each is the same amount of cake just cut differently.

BTW: I don't think I've ever heard of a 15x20 pan icon_sad.gif There are 11x15, 12x16 or 12x18 pans.

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JanH Posted 18 Mar 2008 , 2:36am
post #4 of 5

Hi and Welcome, Kimlee. icon_smile.gif

CC acronyms:

Here's the link to all four Wilton cake and serving charts so you can choose either the wedding size (1x2x4) or party size (1-1/2x2x4) yields:
(Includes both 2 and 3" deep pans.)

Have you considered using square pans:

12" would yield 96 party servings (layered cakes back to back).

16" would yield 80 party servings (single layers back to back).

Indydebi does sheet cake math:
(You decide on 2x2 or 2x3 slices.)

Previous threads on sheet cake size terms:

Found a 15x21x1 pan which is described as 3/4 sheet:

Using this size layer cake would yield 70 wedding 2x2 slices, or fifty party 2x3 slices.


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indydebi Posted 18 Mar 2008 , 3:34am
post #5 of 5

(I have a 14x22 pan)

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