Half Sheet Cake

By tjames30 Updated 9 Mar 2012 , 3:42pm by CWR41

tjames30 Posted 9 Mar 2012 , 3:07pm
post #1 of 4

What are the dimensions of a half sheet cake? I have looked online and I get different answers.

I have an 11x15, which I thought was a half sheet, but when I went to order some boxes there were none to fit it. So I did some research and some consider a 12x18 a half sheet. I have an order for next Saturday and I need a half sheet cake! Someone please tell me which is correct!

Also, has anyone ever used a cake pan divider to make two different flavors? Or should I bake two small ones and just put them together?

Any help or advice is greatly appreciated! Thanks!

3 replies
AAtKT Posted 9 Mar 2012 , 3:20pm
post #2 of 4

Someone can correct me if I am wrong, but this is what I know...

Full Sheet - 24" x 18" = 432 square inches
Half Sheet - 12" x 18" = 216 square inches
Quarter Sheet - 12" x 9" = 108 square inches

I do know that some people just use a 9" x 13" pan and call it a quarter sheet though...

Mathematically an 11" x 15" is only 165 square inches... but I dont know if that makes much of a differance...

The only cake pan divider I have ever used was a sheet of parchment or such thing set between the two when I wanted... but the pre-made dividers look really interesting...

CWR41 Posted 9 Mar 2012 , 3:21pm
post #3 of 4

12x18 is a half sheet.
11x15 is considered a third sheet.

CWR41 Posted 9 Mar 2012 , 3:42pm
post #4 of 4

I wrote this in another thread...

1/4 Sheet = 9x13
1/3 Sheet = 11x15
1/2 Sheet = 12x18
Full Sheet = 16x24 (baked in 18x26 Bun pan with bakeable cardboard tray).

A commercial Bun pan is 18" x 26" (outside measurement), and because they are tapered for nesting or making them stackable, the inside measurement is 16.5" x 24.5".

A commercial full sheet is 16" x 24". They are baked in 16" x 24" bakeable cardboard trays that fit into the Bun pans (flat surface portion) which are used during baking for support and handling purposes.

A true commercial full sheet (16" x 24") serves 96 (unit wt. 106-124 oz.).