## Sheet Cake Sizes

By Kimlee Updated 20 Mar 2008 , 11:00pm by TheCakerator

Kimlee Posted 20 Mar 2008 , 4:06pm
post #1 of 10

I am making a sheet cake for about 100 people and i THINK I have decided to make 1 12x18 choc and 1 12x18 white together. Is this enough or too much? Would 2 11x15 be enough(single layer) ? Next question is where can i get boards big enough for both of those size cakes? Wouldn't i need at least a 25x37 for the 2 12x18 cakes??? Sorry if this all sounds silly- i am new to all of this! thanks in advance

9 replies
q2wheels Posted 20 Mar 2008 , 6:55pm
post #2 of 10

According to the Wilton website a 2 layer 12x 18, cut in 1 1/2 x2 inch slices will yield 72 servings, a 2 layer 11 x 15, will yield 60.

http://www.wilton.com/wedding/cakeinfo/partycuttingguide.cfm

(scroll to the bottom for sheets).

HTH,

Toni Ann

Quote:
Originally Posted by Kimlee

I am making a sheet cake for about 100 people and i THINK I have decided to make 1 12x18 choc and 1 12x18 white together. Is this enough or too much? Would 2 11x15 be enough(single layer) ? Next question is where can i get boards big enough for both of those size cakes? Wouldn't i need at least a 25x37 for the 2 12x18 cakes??? Sorry if this all sounds silly- i am new to all of this! thanks in advance

indydebi Posted 20 Mar 2008 , 8:14pm
post #3 of 10

If you put two 12x18's side by side, you have a 24x18. If you cut the cake into standard 2x2x2 pieces, you will cut 12 rows by 9 columns = 108 pieces.

Two 11x15's side by side will be 22x15 .... cut 11 columns by 7 rows = 77 pieces.

TheCakerator Posted 20 Mar 2008 , 9:54pm
post #4 of 10

does anyone know how many pieces of cake a double layer 12X18 sheetcake would serve, if you cut it into 1x2x4 wedding cake sizes?

indydebi Posted 20 Mar 2008 , 10:04pm
post #5 of 10
Quote:
Originally Posted by TheCakerator

does anyone know how many pieces of cake a double layer 12X18 sheetcake would serve, if you cut it into 1x2x4 wedding cake sizes?

Again, you can just do the math: 12x18, when cut into 2x1 pieces, would be 12 rows x 9 columns = 108 pieces.

A 2x2x2 and a 1x2x4 is the same amount of cake. (Take a 2x2x2, cut it in half, stack the two halves and you have a 1x2x4.).

TheCakerator Posted 20 Mar 2008 , 10:10pm
post #6 of 10

thanks .. I guess it's safe to assume you all know I failed math! LOL

Laura102777 Posted 20 Mar 2008 , 10:20pm
post #7 of 10
Quote:
Originally Posted by TheCakerator

thanks .. I guess it's safe to assume you all know I failed math! LOL

Don't worry, I think many of us have gotten confused by it until we had Debi simplify it for us! I know I have!

mommyle Posted 20 Mar 2008 , 10:22pm
post #8 of 10

In answer to the cake board question, go out to the hardware store and buy corrugated plastic. You can cut it to the size that you need, and then cover it with whatever you want. I swear by the stuff now. I'm buying stock!!!

indydebi Posted 20 Mar 2008 , 10:28pm
post #9 of 10
Quote:
Originally Posted by TheCakerator

thanks .. I guess it's safe to assume you all know I failed math! LOL

I won't even admit to how many YEARS I struggled with the same question until someone explained it to me the very same way!

TheCakerator Posted 20 Mar 2008 , 11:00pm
post #10 of 10

I have your math saved into a folder on my computer! LOL

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