How Many People Does a 16-Inch Square Cake Feed?

A 16-inch square cake serves about 80 party or 128 wedding slices as a two-layer cake about 4 inches tall — the published Wilton chart figures. As a single 2-inch layer it serves about half: 40 party or 64 wedding.

16-inch square cake serves

80–128

Two layers, about 4 in tall: 80 party (1½ × 2 in slice) · 128 wedding (1 × 2 in slice). Single 2-inch layer: about 40 party · 64 wedding (Wilton: under 3 in yields half).

Data & method: Serving counts from the published Wilton cake serving chart (two-layer cakes about 4 in tall; party 1½ × 2 in slice, wedding 1 × 2 in slice). Single-layer figures apply Wilton's rule that cakes under 3 in tall yield half (rounded down). The calculations are covered by automated tests. How we calculate →

Check any size or head count

Preset to the 16" square — add tiers or switch sizes to plan a different cake.

Serving style

Tier 1 (or single cake)

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Serves about

party slices (1½ × 2 in)

Counts are for two layers about 4 in tall (3–6 in serves the same). One 2-inch layer per tier? About 40 (Wilton: under 3 in yields half).

Your cake, tier by tier

Or plan backwards — how many guests?

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

Guests

A 2-tier round (14" + 8") seats about 83 party servings — enough for 80.

16-inch square cake servings: two layers vs. one

Serving counts come down to slice size. Cut party-style (1½ × 2 in slice), a two-layer 16-inch square yields about 80 servings; cut wedding-style (1 × 2 in slice) it stretches to 128. Wilton's figures hold for any cake 3 to 6 inches tall in this pan: height doesn't add servings, because the cake is cut the same way across the top — a taller cake just gives taller slices. A cake under 3 inches tall, such as one 2-inch layer, yields about half: 40 party or 64 wedding.

Same width, different shape: the 16" round serves 77 party / 100 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), two layers	Wedding (1 × 2 in slice), two layers	Single 2-in layer (party / wedding)
6" square	12	18	6 / 9
8" square	20	32	10 / 16
10" square	30	50	15 / 25
12" square	48	72	24 / 36
14" square	63	98	31 / 49
16" square	80	128	40 / 64

Two-layer columns: the Wilton chart (cakes 3–6 in tall serve the same). Single-layer column: Wilton's rule that cakes under 3 in tall yield half, rounded down.

Planning from a head count instead? As a two-layer cake, the 16" square is the chart's answer for 75 people cut party-size.

Baking this cake yourself? The pan volume calculator gives every pan's batter capacity at the standard two-thirds fill, and the pan converter rescales any recipe to fit.

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Frequently Asked Questions

How many people does a 16-inch square cake feed?

As a two-layer cake about 4 inches tall, a 16-inch square feeds about 80 people with party slices (1½ × 2 in slice) or 128 with wedding slices (1 × 2 in slice) — the published Wilton serving-chart figures. Baked as a single 2-inch layer it feeds about half: 40 party or 64 wedding, because Wilton says cakes under 3 inches tall yield half the servings.

How many wedding servings is a 16-inch square cake?

128 wedding servings as a two-layer cake (64 as a single 2-inch layer). Wedding slices are cut slimmer (1 × 2 in slice versus 1½ × 2 in slice for party slices), so the same cake stretches 48 servings further than at a party.

Is a 16-inch square cake enough for 85 people?

Cut party-size, no — a two-layer one seats about 80. Either cut closer to wedding size (128 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.

Does a taller cake serve more people?

The Wilton chart is written for a two-layer cake about 4 inches tall, and Wilton says cakes 3 to 6 inches tall in the same pan yield the same number of servings, because they're cut the same way — a taller cake gives taller slices, not more of them. A cake under 3 inches tall (one 2-inch layer) yields about half: 40 party or 64 wedding slices for a 16-inch square.