I need to know how much cake I need to feed one hundred people. This is my first big job, so think any of you guys can help me out? I was thinking a full sheet cake, would that be enough? Or do I need more?

a full sheet (12x1 will give you 108 servings if you use the Wilton cake sizes. So, yeah, you'd have plenty of cake

If you'd like to make a different sized cake, here's a guideline you could use. Have fun and good luck!

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

What is the cake for ? That Wilton sizing is REALLY small....

A full sheet 12x18 will give you 108 servings *IF* it's a double layer cake, cut in the industry standard size of 1x2x4. A single layer will yield 54 servings (cut in 2x2" pieces, 6 rows by 9 rows). Two 12x18's side by side (18x24) will yield 108 servings (9 rows by 12 rows).

1x2x4 and 2x2x2 is pretty standard serving sizes. People hear "one inch" and they think "paper thin". It's not.

a 12x18 is a half sheet. a full sheet is double that. i made full sheets almost every week for base functions. those do serve over a hundred people.

Thankies everyone! The cake is for my school's first annual Joe Awards (basically the academy awards for the drama club at my school)

I think it depends on what cake pans you have access to - the bigger ones can get pretty costly!