Cake Size and Servings: What Your Guest Count Actually Needs
Direct answer
Use the Wilton industry chart, the de-facto standard bakeries quote from: a wedding serving is a 1"×2" slice (party serving 1.5"×2"). A 10" round = 38 wedding servings; a three-tier 6"+8"+10" ≈ 74 wedding servings — right for ~75–80 guests if everyone gets cake. Planning levers: not all guests eat cake (dessert tables cut demand), and a small display cake plus sheet cakes in the kitchen serves large weddings at a fraction of the price.
The display-plus-sheet strategy
Cake pricing scales with decorated surface, not volume. A two-tier display cake for the photos plus kitchen sheet cakes (cut to the same 1"×2" serving) feeds 150 guests indistinguishably from a four-tier showpiece — a swap bakers themselves suggest when asked. Order the visible cake for the look and the total servings for the count.
Assumptions
- Wilton serving chart (tier-3 industry doc); bakeries may cut slightly larger or smaller.
- Wedding-size slices — party slices reduce yield ~25%.
What changes this answer
- A dessert table alongside: 2–3 cookies/bars per person cuts cake demand substantially.
- Sheet-cake supplement strategy changes the visible tier count you need.
- UK/metric bakeries quote portions per tier directly — ask for the chart they cut by.
Sources
- Wilton — cake serving chart (de-facto industry chart) — tier 3, verified 2026-07-22
- Professional caterer guides (multi-source consensus; URLs in research/05) — tier 5, verified 2026-07-22
Last checked 2026-07-22. Tiers: 1 government/regulator · 2 industry body · 3 official supplier docs · 4 large surveys · 5 professional material.