Wedding Cake Portion Guide: What Size Fruit Wedding Cake Do I Need?
Planning your wedding cake is one of the most enjoyable parts of organising a wedding, but it often raises a very practical question:
What size wedding cake do we actually need?
Many couples are surprised to discover that traditional fruit wedding cakes serve more guests than expected, because they are cut into smaller slices than sponge cakes.
To make planning easier, we’ve created a simple Wedding Cake Size Calculator to help estimate the right cake size for your guest numbers.
👉 Use the Wedding Cake Size Calculator
Typical Fruit Wedding Cake Portions
Because fruit cake is rich and dense, slices are traditionally cut smaller than sponge cake.
As a guide:
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6 inch cake — around 12 portions
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8 inch cake — around 24 portions
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10 inch cake — around 45 portions
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12 inch cake — around 75 portions
This means that even a modest cake can serve a surprisingly large number of guests.
Choosing the Right Cake Size for Your Wedding
The best cake size depends on a few simple factors:
Number of guests
Start with an estimate of how many guests will attend your wedding reception.
Whether the cake will be served
Some couples serve the wedding cake as dessert, while others save it for later in the evening.
Tiered or single cake
A tiered fruit cake creates a classic wedding centrepiece while allowing you to combine different cake sizes.
For example:
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6" + 8" tier – small wedding
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8" + 10" tiers – medium wedding
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8" + 10" + 12" tiers – large wedding
Try the Wedding Cake Size Calculator
Our simple calculator helps you quickly estimate which cake size will serve your guests.
Just select:
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Cake shape
-
Cake style
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Number of guests
and the calculator will suggest suitable cake sizes.
👉 Use the Wedding Cake Size Calculator
A Final Tip
Traditional fruit wedding cakes also have an advantage that many modern sponge cakes do not — they keep extremely well.
This means your cake can be ordered in advance and any remaining cake can be enjoyed long after the wedding.
