Cake & Dessert Serving Size Calculator

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.

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.

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.