Cake & Dessert Serving Size Calculator

Select your cake's shape, dimensions, and slice style to see how many servings it yields.

How this works

Cake serving charts are based on slice footprint — a standard party slice is about 2 inches by 2 inches (4 square inches), while a thinner wedding-reception slice is about 1 inch by 2 inches (2 square inches), since it's typically one of several desserts on offer. This calculator divides your pan's total area by the chosen slice size.

Source: Serving-size-per-square-inch figures follow the standard wedding/party cake serving charts published by Wilton.

Frequently asked questions

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

At a standard 2×2 inch party slice size, a 9-inch round cake (about 63.6 square inches) yields around 15 servings; at smaller wedding-style slices it can stretch to around 31 servings.

Why do wedding cake serving charts show more servings than a party cake chart?

Wedding slices are cut much thinner (about 1 inch by 2 inches) since cake is typically one of several desserts offered, while party-size slices (2 inches by 2 inches) assume cake is the primary dessert.

Does this account for multiple layers?

No — the serving count is based on the pan's surface area (footprint) regardless of how many layers are stacked, since a slice's height doesn't change how many wedges fit across the cake's top.

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