How Many Does A Half Sheet Cake Feed

Decorating By DMJ69 Updated 29 Apr 2010 , 9:23pm by Doug

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DMJ69 Posted 29 Apr 2010 , 8:26pm
post #1 of 3

I was asked to make a baby shower cake for my friend and she needs it to feed 30-35 people. When I looked on the Wilton site it looked like a half sheet cake would feed 60. I'm not 100% sure because I just counted the squares for the cutting guide. So my question is will a half sheet cake be enough or should I make a full sheet cake.

I also want to know if I put 2- 9 x 13 cakes side by side would that be the same as a full sheet cake. I really don't want to purchase a full sheet cake pan because I am only baking cakes for family and friends.



2 replies
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indydebi Posted 29 Apr 2010 , 9:23pm
post #2 of 3

History of cake pan sizes:

A commercial baking sheet pan is 18x26 (or sometimes 18x24)...full sheet.
Cut that in half and you now have two 12x18's.....half sheet.
Cut those in half and you now have four 12x9's....quarter sheet.
I think Wilton threw the 11x15 in there just to screw us up! icon_lol.gif

Here is a link to a thread where I explain how to "do the math" to figure how many servings you get for each size cake, based on single layer cakes:

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Doug Posted 29 Apr 2010 , 9:23pm
post #3 of 3


determine size of cut

so if using 2x2x2 (wide x length x height)

divide one side of cake measure by width

the other side by length

and multiply the answers together

9 / 2 = 4.5 = 4 (drop the fraction)

13 / 2 = 6.4 = 6 (drop the fraction

4 * 6 = 24 servings for 1 9x13

two of them would yield double that --> 48 -- way more than you need.


example two.

if you switch to 1.5x2x2 servings it goes like this:

9 / 1.5 = 6

13 / 2 = 6.5 = 6

6 * 6 = 36 exactly what you need -- tho' the servings are a bit smaller.


yes, it's math, but fairly simple and it works for any size square or rectangular cake

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