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How Many People Does a 8-Inch Square Cake Feed?

A 8-inch square cake serves about 20 party or 32 wedding slices — the published Wilton chart figures.

8" square cake serves

20–32

20 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 →

Check any size or head count

Preset to the 8" square — add tiers or switch sizes to plan a different cake.

Serving style
+ Add tiers for a tiered or wedding cake

Serves about

20

party slices (1½ × 2 in)

Your cake, tier by tier

Next: how much frosting for this cake? →

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.

8" square cake servings, both ways to cut

Serving counts come down to slice size. Cut party-style (1½ × 2 in slice), a 8-inch square yields about 20 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.

Same width, different shape: the 8" round serves 20 party / 24 wedding. Without the corners, a round of the same width serves fewer wedding slices; party counts run closer and sometimes tie.

All square sizes compared

Size Party (1½ × 2 in slice) Wedding (1 × 2 in slice)
6" square 12 18
8" square 20 32
10" square 30 50
12" square 48 72
14" square 63 98
16" square 80 128

Planning from a head count instead? The 8" square is the chart's answer for 15 guests and 20 guests cut party-size.

Baking this cake yourself? The frosting calculator works out how much buttercream a two-layer 8-inch square needs, and the pan volume calculator gives the batter capacity.

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Frequently Asked Questions

How many people does a 8-inch square cake feed?

A 8-inch square cake feeds about 20 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 8-inch square 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 12 servings further than at a party.

Is a 8-inch square cake enough for 25 people?

Cut party-size, no — it seats about 20. 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.