Size & Serving Guide

How Much Cake Do You Need?

Choosing a size is usually the first decision, and the easiest one to get wrong. This guide shows how many portions each cake size gives, how party and wedding slices differ, and which tier combinations suit different guest numbers.

PhotographyTiered Thistleberry cake being sliced4:5 portrait

Portions by Size

Single Tier Serving Numbers

Party portions are generous dessert slices. Wedding portions are the slimmer finger slices traditionally served at weddings, so the same cake serves more people.

SizeRound partyRound wedding

6"

20

20

Square: 25 party · 25 wedding

8"

30

35

Square: 40 party · 45 wedding

10"

50

55

Square: 65 party · 70 wedding

12"

70

80

Square: 90 party · 100 wedding

14"

95

110

Square: 120 party · 140 wedding

Figures are a guide — the exact number of slices depends on how the cake is cut on the day. If you're between two sizes, we'll talk it through with you.

Tiered Cakes

Popular Tier Combinations

Tiers can be mixed in shape, size and flavour. Different tiers in different flavours give your guests a choice on the day.

6" + 8"

Around 55 wedding portions

A gentle two-tier cake for smaller weddings and intimate celebrations.

6" + 8" + 10"

Around 110 wedding portions

The classic three-tier shape, and our most requested wedding cake.

8" + 10" + 12"

Around 170 wedding portions

A statement cake with real presence on the cake table.

6" + 8" + 10" + 12"

Around 190 wedding portions

Four tiers for larger weddings, or when height is part of the design.

Good to Know

Choosing With Confidence

01

Party portions

Generous dessert-sized slices, the way most people cut a birthday cake at home. Use these figures for birthdays, anniversaries and family celebrations.

02

Wedding portions

The traditional finger portion served at weddings — a slim slice around 1in x 1in x 4in, which is how caterers and venues cut a tiered cake.

03

Square gives you more

A square tier holds roughly a quarter more cake than a round tier of the same size, so squares are worth considering when guest numbers are tight.

04

Not everyone eats cake

As a rule of thumb, around three-quarters of your guests will take a slice. Many couples choose a cake that serves fewer than their full guest list, or add a hidden dummy tier for height.

05

Keepsake slices

If you'd like to save the top tier, or send guests home with boxed slices, allow for that when we talk sizes.

Next Step

Tell Us Your Guest Numbers

Share your celebration date and how many people you're planning for, and we'll recommend a size and shape that works beautifully — and quote it clearly.