How Many People Does a Sheet Cake Feed?

So you need to know how many people does a sheet cake feed?  There are few things that must be considered when trying to calculate how many people a sheet cake can feed.

• I suppose the number one thing to consider is the size of the sheet cake.  There is no standard it appears for the size of a sheet cake.  Depending on who you talk to, the size can range from 12 x 24 inches up to 24 x 36 inches.
  
• Number two might be how thick the sheet cake will be.  A one layer sheet cake will be 1″ thick.  If you add a filling, you will have two 1″ layers with filling between for a sheet cake that is approximately 3″ tall.
  
• And, the third thing to consider is how big of a slice each guest will receive.   If you have a single layer cake, you might want to consider cutting your pieces at 1×3 inches each.  If you have a double layer cake, your pieces may be reduced to 1×2 inches.  I personally prefer keeping everything squared with 2×2 inch cake pieces.

So we still haven’t answered “how many people does a sheet cake feed?”  Here are a couple of formulas to work with.

• Let’s assume you have a 12 x 24 inch sheet cake.  You are going to serve pieces that are 2×2 inches squared.  Your total cake size is 288 inches divided by 4 inches (each cake piece is 2×2=4). This will allow you to cut 72 pieces of cake.
  
• If you have a sheet cake that measures 24 x 36 inches, you will have a total of 864 inches of cake.  You wish to serve cake pieces measured 1×3 inches each.  Divide 864 x 3 (each cake piece) and you will have a total of 288 pieces of cake.

The height of the sheet cake will not be used in your calculation.  If should only be used to help determine the size of each individual piece.  The taller the cake, the small each piece may be, since two layers will give them more “vertical” cake.

To figure how many people does a sheet cake feed, you may first want to figure how many people you have to feed.  Then use the simple equation above to figure out how big a cake you need to make.

Hope this helps.

disclaimer:  I am not a baker or a chef.  The calculations above should be verified by an independent source with professional knowledge of cake sizes and cutting methods.  I can not be held responsible for a shortage of cake at your next wedding, baby shower, birthday party, bar mitzva, graduation celebration or any other event that may require the use of a sheet cake.  Please remember, when cutting any object, to be extremely cautious with the use of any sharp instrument (namely knives, axes and chain saws).