Im new to making cakes and i wanna price based on servings but i have no idea how tell how many a cake can serve. Ive seen people look at cakes and can tell how many people it will serve but im just clueless lol. can somebody tell me how to do this? thanks.

Here you go :) http://www.earlenescakes.com/ckserchart.htm

yes and

http://www.wilton.com/wedding/wedding-cakes/wedding-cake-data.cfm

and

http://www.wilton.com/cakes/making-cakes/baking-party-cake-2-inch-pans.cfm

some people use earlene's chart some use wilton's

there's wilton wedding size servings and wilton party size servings

what each decorator does is decide which size serving they want to offer and go with that--so it's a matter of informing your clients too as to the exact size serving they are purchasing

i use wilton wedding cake size servings for everything myself--it is considered the industry standard--but nothing is ironclad in caking

Here is one of my favorite tools.  I think it was made by somebody on this site, if I remember correctly, but I don't remember who  :-)  http://shinymetalobjects.net/cake/calculator/cakulator.cgi
 

yes shiny metal object thingy is awesome! but my new favorite tool is an app on my iphone called the tiered caker, i just put in my serving number and it gives you a bunch of size options to tell your client. I love it, cost 8 bucks and well worth it for an on the go type of person like myself:)