How-to

What size cake do I need? A simple serving guide

Choosing a cake size sounds simple until you are staring at a guest list. Here is the honest, practical guide we use with every customer so nobody goes without a slice.

Finger slices vs dessert portions

There are two ways to serve a cake, and they change the numbers a lot:

  • Finger slices are the slim slices handed round at a party or sent home in a napkin.
  • Dessert portions are larger, plated slices served with a fork, often with cream or fruit.

A cake that gives 24 finger slices gives roughly 12 dessert portions. Decide which you are serving before you pick a size.

A quick serving guide

  • 6 inch serves about 10 to 12 finger slices. Lovely for a small birthday.
  • 8 inch serves about 20 to 24. Our most popular size.
  • 10 inch serves about 35 to 40.
  • 12 inch serves about 50 to 55.
  • Two tier from around 40 upward, depending on the tiers chosen.
  • Three tier is ideal for weddings and large parties of 80 plus.

Things that change the maths

A few real-world factors nudge these numbers:

  1. Time of day. An evening celebration with food already served needs less cake.
  2. Who is attending. A children's party gets through smaller slices.
  3. Is it the only dessert? If the cake is the star, size up.
When in doubt, choose the larger size. Leftover cake keeps well for a few days and is never wasted.

Tall cakes and tiers

Adding height is a smart way to serve more people without a much wider cake, which also looks impressive on the table. If you are planning a wedding or a milestone birthday, a tiered design gives you flexibility on flavours too.

If you tell us your guest numbers and the style of event, we will recommend a size and shape that fits, with no pressure to over-order.

Common questions

How many does an 8 inch cake serve?

Around 20 to 24 finger slices, or 10 to 12 generous dessert portions.

Should I size up or down if I am unsure?

Size up. A little leftover cake is always welcome, and running short at a celebration is no fun.

Free guide

Get our cake sizing cheat sheet

Pop in your email and we will send the printable guide, plus a welcome treat for your first order.

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