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How Many People Does a 9-Inch Round Cake Feed?

A 9-inch round cake serves about 24 party or 32 wedding slices — the published Wilton chart figures.

9" round cake serves

24–32

24 party (1½ × 2 in slice) · 32 wedding (1 × 2 in slice)

Data & method: Serving counts from the published Wilton cake serving chart (4-inch-tall cakes; party 1½ × 2 in slice, wedding 1 × 2 in slice). Every figure is checked by an automated test. How we calculate →

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Preset to the 9" round — add tiers or switch sizes to plan a different cake.

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Serves about

24

party slices (1½ × 2 in)

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Or plan backwards — how many guests?

We'll find the smallest cake that seats them, using the party/wedding slice size selected above.

A 2-tier round (14" + 12") seats about 103 party servings — enough for 100.

9" round cake servings, both ways to cut

Serving counts come down to slice size. Cut party-style (1½ × 2 in slice), a 9-inch round yields about 24 servings; cut wedding-style (1 × 2 in slice) it stretches to 32. Both figures assume the classic 4-inch-tall, two-layer cake the Wilton chart is written for — bake it as a taller three- or four-layer cake and it serves roughly half again as many.

All round sizes compared

Size Party (1½ × 2 in slice) Wedding (1 × 2 in slice)
6" round 12 12
8" round 20 24
9" round 24 32
10" round 28 38
12" round 40 56
14" round 63 78
16" round 77 100

Baking this cake yourself? The frosting calculator works out how much buttercream a two-layer 9-inch round needs, and the pan volume calculator gives the batter capacity.

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Frequently Asked Questions

How many people does a 9-inch round cake feed?

A 9-inch round cake feeds about 24 people with party slices (1½ × 2 in slice) or 32 with wedding slices (1 × 2 in slice). These are the published Wilton serving-chart figures for a standard 4-inch-tall, two-layer cake — the reference most bakeries plan with.

How many wedding servings is a 9-inch round cake?

32 wedding servings. Wedding slices are cut slimmer (1 × 2 in slice versus 1½ × 2 in slice for party slices), so the same cake stretches 8 servings further than at a party.

Is a 9-inch round cake enough for 29 people?

Cut party-size, no — it seats about 24. Either cut closer to wedding size (32 slimmer slices), add a small second tier, or go one size up. Rounding up beats running short: end pieces and uneven cuts always eat into the chart number.

How tall is the cake these numbers assume?

The Wilton chart assumes a 4-inch-tall, two-layer cake. A modern three- or four-layer cake running 6 inches tall serves roughly 50% more, because each slice is taller — if you bake tall, you can size down a tier.