How to choose the right cake size for your celebration
Cake size is one of the first decisions to make and one of the easiest to get wrong. This guide walks through every variable — from guest counts and serving styles to tiers and keepsakes — so you can order with confidence.
Order too small and the cake disappears before the speeches. Order too large and you are sending slices home in serviettes. Neither is the end of the world, but a little planning beforehand makes the choice easy — and means the cake looks right on the table as well as feeding everyone at it.
Start with the guest count
The first question is how many people you are feeding. The second — often forgotten — is whether the cake is the only dessert or one of several. A cake served as the sole sweet will need to work harder than one on a dessert table alongside other options.
A practical size guide
Round cakes are sized by diameter. These are honest, generous serving estimates — not the optimistic figures you sometimes see on packaging.
| Size | Servings (dessert) | Servings (finger slices) |
|---|---|---|
| 6 inch | 8–10 | 14–16 |
| 7 inch | 12–14 | 20–22 |
| 8 inch | 16–20 | 26–30 |
| 9 inch | 22–26 | 34–40 |
| 10 inch | 28–34 | 44–52 |
| 12 inch | 40–50 | 64–74 |
When tiers make sense
A tiered cake is not just a larger cake — it is a design object that earns its place at the centre of the table. If you are feeding more than 60 guests, tiers usually give better proportions than one very wide single tier. They also let you offer more than one flavour, which is worth considering for larger parties where tastes vary.
A tiered cake is a design object first. Size and servings follow naturally once the look is right.
Typical two-tier combinations
- 6 inch + 8 inch — roughly 28–34 servings, compact and elegant
- 8 inch + 10 inch — roughly 48–56 servings, a good mid-size option
- 10 inch + 12 inch — roughly 72–86 servings, suits larger receptions
Saving a top tier
If you want to freeze the top tier as a keepsake — a tradition at weddings — factor that into your serving count. A 6-inch top tier feeds around 8–10 people as dessert, so subtract those portions from your available total.
When to go up a size
If you are between sizes, go up. The difference in cost is rarely significant compared to the peace of mind — and a slightly larger cake almost always looks better on the table than one that is just barely enough.
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