I am sure this has been asked and answered....but how can I determine the number of servings in a cake? How much cake batter is needed? Is there a chart somewhere that has this information. I have only made 8" or 9" round cakes for some birthday celebrations.....but how much do I need to serve 100 people? 75 people? etc.....

thanks!

DH cake mix has it on the inside of the box

Someone kindly pointed me in this direction when I asked. It's a great tool and I now have it bookedmarked.
For 3" deep pans - http://cakecentral.com/article15-Cake-Baking-Cutting--Serving-Guide---3-in-Deep-Pans.html
For 2" deep pans - http://cakecentral.com/article14-Cake-Baking-Cutting--Serving-Guide---2-in-Deep-Pans.html

You could use the wilton cahrts or make your own it depends what YOUR serving size is........i used to used wilton but after a while I kind got the feel for it and adjusted those numv=bers a bit to suit me and the occasion

cool..thanks for the info