How Many Slices Are in a Cake? Servings by Pan Size

An 8-inch round layer cake usually provides about 20 small party servings or 24 slimmer wedding servings. A 9-inch round layer cake provides about 24 party servings. The exact number depends on how tall the cake is and how it is cut. Generous wedges will feed fewer people.

The estimates below apply to cakes about 4 inches tall, commonly made from two layers with filling. They are planning figures, not guarantees. A small party portion is roughly 1½ inches wide and 2 inches deep; a wedding portion is closer to 1 inch wide and 2 inches deep.

Cake servings by pan size

Round layer cakes

• 6-inch round: about 12 party servings or 12 wedding servings.
• 8-inch round: about 20 party servings or 24 wedding servings.
• 9-inch round: about 24 party servings or 32 wedding servings.
• 10-inch round: about 28 party servings or 38 wedding servings.
• 12-inch round: about 40 party servings or 56 wedding servings.

Square layer cakes

• 6-inch square: about 12 party servings or 18 wedding servings.
• 8-inch square: about 20 party servings or 32 wedding servings.
• 10-inch square: about 30 party servings or 50 wedding servings.
• 12-inch square: about 48 party servings or 72 wedding servings.

These counts follow a standard cake-serving chart for tall layer cakes. They assume small, orderly portions cut with a consistent method. A home cook dividing an 8-inch round into large wedges may get only 8 to 12 slices. The number changes because the pieces are bigger, not because the pan changed.

How many pieces come from a sheet cake?

For a single-layer 9-by-13-inch cake, a four-row by six-column cutting pattern gives 24 rectangular pieces, each a little over 2 inches across. Cut it into three rows and four columns for 12 much larger squares. A 12-by-18-inch sheet cut into a six-by-nine grid gives 54 pieces of about 2 by 2 inches.

Sheet cakes are usually shorter than stacked layer cakes, so compare the actual size of a serving, not just its footprint. A tall frosted piece and a thin square from a sheet pan are not equivalent portions.

Does adding layers increase the number of servings?

Stacking another cake layer makes each slice taller. It does not increase the cake's diameter or the number of places where you can cut across the top. Tall cakes can provide satisfying narrow slices, which is why a four-inch-tall celebration cake can feed more people than a thin cake of the same diameter. Do not double the stated serving count just because the cake has two layers.

If you are baking one thin layer, expect fewer servings at the same portion size. Very dense fruitcakes may be served in smaller pieces, while light cakes served as the only dessert may be cut more generously.

Cut a round cake to match your serving plan

For an 8-inch or larger round cake, smaller party portions are easier to cut in sections than in long wedges reaching the center. Make a circular cut roughly 2 inches in from the edge. Divide the outer band into short pieces, then cut the remaining center. For a small round cake, ordinary wedges are simpler. Use a clean knife or cake server and wipe off icing between cuts.

If the cake is layered with soft frosting, chilling it briefly can make neat slicing easier. For a tiered cake, remove each tier and cut it separately after taking out any internal supports.

Choose the cake size for your guests

Count the people likely to eat cake, then decide whether you want small celebration portions or generous dessert slices. Leave room for a few second helpings if cake is the main dessert. If you are ordering from a bakery, ask what its stated serving count means and which cutting pattern it expects you to use.

For a more detailed reference by pan shape and height, consult a published cake-serving chart.