What is the best wedding cake size for 100 guests and its average price in the UK?

Cutting the cake at your wedding is a beautiful ritual that has been around for years. Using our wedding cake calculator, we were able to review cakes of various sizes and found the best options for different guest counts.
We've created an entire guide on everything you need to know when choosing a wedding cake fit for 100 guests. You will also find some average wedding cake prices in the UK below.

Best wedding cake size for 100 guests

When choosing the best wedding cake for 100 guests, we suggest a 4 tier wedding cake where the tiers are 12″, 8″, 6″ and 4″ as shown in this table:


This wedding cake offers 112 servings

Wedding cake serving chart for 100 guests

Average price of this wedding cake size in the UK

The average price of such a cake in the UK in 2022 is usually between £450 - £500. Metropolitan areas such as London tend to be more expensive, the prices could be up to 15% higher than the average price.

Keep in mind that a wedding cake is not a standard product and its appearance and taste largely depends on the craftsmanship of the baker. The cost also reflects the ingredients used and the way the cake is decorated. Therefore actual prices can differ from the average prices shown here.

Why do we suggest this wedding cake size for 100 guests?

This is a great choice for 100 guests because it has a number of benefits such as:

1 - Perfect presentation

Presentation is very important in your wedding. A taller cake like this one with 4 tiers looks a lot more impressive than smaller cakes with a bigger radius. Having a tall cake draws more attention to it, making it a focal point, no matter how crowded the reception may be.

To take your presentation up a notch, you can even add decorations such as a small wedding couple figurine at the top of the tall cake, cake sparklers, satin ribbons and silk or edible flowers.

2 - Allows to prepare a tier for people with food allergies

In the UK, it is estimated that about 10% of people have a food allergy. Most common food allergies are cow milk, eggs, tree nuts and peanuts. When inviting 100 people, one can expect about 10 guests with food allergies. The second tier from the top could be specially prepared for guests with such food allergies.

3 - Easy to save the top tier for your anniversary

Your first anniversary is special and you'll want to remember the beautiful moments you shared during your wedding. It's a common tradition for newly wedded couples to remove the top tier and place it in the freezer for a year.

You may want to do the same for your own first special day. The 4" top tier is our recommended cake size for saving as it's perfect for boxing and freezing without taking up too much space. 

Alternative wedding cake sizes for 100 guests

Not all bakers offer all kind of different sizes. However, there are alternatives that you can select that will still be able to fit your needs. Using our wedding cake calculator, we were able to determine the best wedding cake alternative options for you to choose from. Below are two alternatives that are also suitable for a wedding with about 100 guests.

Best Alternative #1 for 100 guests - 3 tier wedding cake, each tier is 6″ high

This is a great alternative. It is a 3 tier wedding cake where the tiers are 12″, 9″ and 6″ as shown in this table:


This wedding cake offers 106 servings

This cake looks beautiful symmetrical because each layer differs exactly 3″ from the one above or below it.

The top tier could be specially prepared for guests with food allergies.

The average cost for this cake in the UK in 2022 is £400 - £450, approximately  £4.00 - £4.50 per person

Another wedding cake size for 100 people

Best Alternative #2 for 100 guests - 5 tier wedding cake, each tier is 4″ high

This is another great alternative. It is a 5 tier wedding cake where the tiers are 12″, 10″, 8″, 6 and 4″ as shown in this table:


This wedding cake offers 99 servings

The second or third tier from the top could be specially prepared for guests with food allergies.

Also you can remove the top tier and place it in the freezer for a year for your first wedding anniversary. it's perfect for boxing without taking up too much space. 

The average cost for this cake in the UK in 2022 is £500 - £550, approximately  £5.00 - £5.50 per person

Another wedding cake size for 100 people

Do you need 100 cake servings for 100 guests?

The typical rule is to ensure that your cake provides at least one serving per guest. This rules should especially be applied when the cake is being served to each guest individually by the waiters. If you're slightly under 100 servings, it's fine to serve half portions to small children.

However, if you have a dessert table where the guests have to get their own piece of cake, you will typically need less than 100 servings. Not all guests will choose to have cake. Many wedding planners recommend that in such cases, you only need to cater to about 80-90% of your guests. For 100 guests, you will need about 80-90 servings of your wedding cake. If this is true for you, have a look at the best wedding cake size for 80 guests.

Want to see more wedding cakes? Use the wedding cake calculator

Enter the number of guests and the Wedding Cake Calculator will show you the wedding cakes found along with the average cost. You'll also get more information, such as handy infographics with wedding cake cutting charts.

We also explain what the wedding cake costs depends on and what you should pay attention to when ordering.

More full guides for other wedding cake sizes

The current page contains a full guide for 100 guests. We also have a full guide for these guest count:

How do you pick the perfect wedding cake for 100 guests?

Wedding cakes come in sorts of different flavors, sizes, and colors. When deciding on the cake perfect for your wedding guests, it can be a little overwhelming. However, to help make things easier for you, we have listed some important factors you may want to consider.

1 - Get the cake with the best presentation

As we mentioned earlier, presentation is very important when considering your wedding cake. You have to have a presentation that will leave all your guests in awe. When it comes to a wedding cake for 100 guests, the size and placement of the cake are important factors. You can get help from professional wedding coordinators and bakers. While you’re at it make sure your decorations are just as impressive. Here are some ideas:


When choosing flowers to decorate your wedding cake, it could be wise to use artificial flowers. Silk flowers will also save you some money. You can also use real flowers if you want them to match your other wedding flowers but keep in mind, it's often a lot of work. Sugar flowers are also a great option if you want something that's customized and food safe.


Sparklers are always a fun addition to your wedding cake. It makes the cake attract a ton of attention. Make sure you choose food-grade ones in order to have a safe yet fun experience.


The satin ribbon on the wedding cake adds a great touch to the decoration. Choose a colour that matches your theme.

A wedding couple on top of the cake

A cake topper is another type of decoration that has been used for a lot of years. It might make your wedding cake look more presentable. You can make use of 3D scanning and printing to personalize it and make it look more like you and your future spouse.

The wedding cake table

It's important for the wedding cake to look good, but don't forget about the surrounding elements on the table. For example, the tablecloth and the cake stand also have a huge effect on what the whole picture looks like. Other things you can decorate with include: flowers, ribbons, candles, champagne, glasses, plates, plants, and cutlery.

A wedding couple on top of the cake
The decorated wedding cake table

2 - Pick the right taste choices for your 100 guests

There are a variety of flavors available when it comes to wedding cakes. You should get the flavour that pleases all your 100 guests so everyone can enjoy the cake. The most important thing that determines taste is the filling and the topping. There is no end to the list of amazing flavors out there.

You can have your pick with either traditional flavors such as vanilla or more exotic options such as salted caramel, tuxedo torte, or chocolate raspberry truffle. You get to choose whichever one you want.

How do you as a couple cut the wedding cake for 100 guests?

The cake cutting is seen by many as the best part of the reception. You should consider when and how you'll be cutting the wedding cake. For a 4 tier wedding cake, it's usually customary for the married couple to cut the first piece from the bottom tier. Also this layer is the most stable layer and therefore easier to cut.

Follow these steps when cutting your wedding cake for 100 guests:

  1. Before cutting the cake, you should ensure there's a plate and two forks ready.
  2. The guests will usually be seated and the married couple will be called in front and pose with the cake for photos. Family and friends can also take photos at this time.
  3. Usually the bride picks up the knife and the groom puts his hand over the bride's hand. The traditional positioning of the wife is standing to the right of the groom, but either way works just fine.
  4. The newly married couple will cut the cake, and more photos are taken.
  5. While the bride and groom take the first bite. There are a couple of different ways this is normally done:
  • Simultaneously - get a bite on either fork and feed each other.
  • After each other - the groom feeds the bride a piece first and vice versa.
  • For some cultures - parents have to cut the first piece of cake and give it to the couple.
  1. You could end the ceremony with a kiss.
  2. Trained staff members of your wedding venue usually cut the remaining slices for the guests. The cake can either be served by waiters, or guests can get a piece of cake by themselves.
The wedding cake cutting ceremony

Here is an infographic for serving the Best Wedding Cake size for 100 guests

After your cake cutting ceremony is completed, the staff needs to cut the cake into the servings for the guests. The following images show the pattern that should be followed when cutting the recommended cake.

Infographic Wedding Cake for 100 guests

The servings guide for this wedding cake for 100 guests

Below are 4 high resolution charts showing how to cut each cake tier into portions. You can open a chart in a new browser tab, make a print out and use it as a template for cutting the cake.

  • Tier 4 (12″): 64 portions
  • Tier 3 (8″): 28 portions
  • Tier 2 (6″): 14 portions
  • Tier 1 (4″): 6 portions

In total 112 portions.

Disclaimer: please use at your own risk. See site terms of use

how to cut a round cake into 64 pieces
how to cut a round cake into 28 pieces
how to cut a round cake into 14 pieces
how to cut a round cake into 6 pieces

Final words

Your wedding day is by far one of the most important days in your life, everything should be perfect. The wedding cake is definitely one of those things. The guide above will ensure you have the best wedding cake, perfect for 100 guests. For more help, check out the different tools on our website to make everything a lot smoother.

Look at our great wedding calculators


Do you need help on how much money to plan for you wedding? This Budget Calculator will estimate the costs. You can also download a customized spreadsheet for your wedding budget for free.


Want to know how many drinks you need for your party? Use this Alcohol Calculator for Wedding or Party to find out how many soft drinks, beer, wine, cocktails and spirits you will need and what the estimated cost will be.