Cake Servings Calculator

About this calculator

This calculator estimates servings from a round cake's diameter (and number of layers) using standard slicing charts from professional baking guides — a party-size slice is roughly 2×2 inches, while a wedding-size slice is a thinner 1×2 inches, so the same 10-inch cake yields noticeably more servings cut wedding-style than cut for a casual party.

Bakers and event planners use it to size an order correctly before baking or ordering a cake — under-sizing means running short mid-event, while over-sizing wastes cake and budget — and stacking additional layers multiplies the servings from the same diameter without needing a larger pan.