I'm new to cake decorating and see that most people charge a dollar amount per serving, but how are the servings calculated?

I know that you can look up the servings for Wilton pans, but for example, if I have my bottom tier as two 8" rounds, I just multiply the number of servings in one pan x 2 for the servings on that tier, right?

But what if I carve a cake? Is there any easy way to calculate the number of servings - is there a regular size for a serving of cake?

Thanks everyone!

Wilton's website has a chart as does Earlene I believe.

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

I use this chart for all cakes, wedding or party cakes.

The number of servings they have listed is for a 2 layer (4in tall tier). So a round 8in 2 layer cake serves 24.

Thank you! This will help a lot!

http://www.earlenescakes.com/ckserchart.htm

Here is earlene's chart! This is what I use!