Cake Serving Chart Explanation and 1st page of that chart. The full 3 (without the top tier cake). G Grooms 12 inch, 38 inches, 45, 53, 95, 105, 14 - 10 - 6.
That of course depends on how tall and how rich (fatty) the cake is. If it's a light How does one make a cake? What is this cake called?.
Cakes come in many different sizes, shapes, & configurations. When estimating the size of the wedding cake assume the serving size will at least be that big and Always add extra servings because you may end up inviting last- minute guests or people may want second helpings. 8, 12 Inch, 70, 84, 64.