Below is the reference chart I use to determine the tier sizes for all of my wedding cakes. I have always used this guide and have never had an insufficient number of servings. I shared a rather poor copy of the cake slice chart here in September of 2010. I knew it had to be available somewhere online, but I just couldn’t find it. Thanks to Angela from Sugar Sweet Cakes and Treats for sharing the link to the chart, and thanks to Wilton for providing the information.
A few notes: The baking times are for conventional home ovens. (Commercial convection ovens bake faster.) A 7″ round serves approximately 18 guests, and an 11″ serves about 48.
I hope you find this chart useful–and easy to find!