Wedding Cake Size Guide [2025]

Your cake is a representation of your wedding day.

A traditional dessert for everyone, so that means all guests should get a slice of cake.

Your wedding cake should be sized according to how many guests are attending.

So don’t worry, in this ultimate wedding cake size guide, we’ll find your perfect cake size by tier, portion style, and guest count so you can easily start planning your cake.

There are many overlooked factors that can influence the size of your cake, as we’ve found many weddings where cakes aren’t the only dessert.

Either way, we’ve made thousands of cakes and know exactly the right size for your once-in-a-lifetime day.

Below you’ll find a wedding cake size calculator that can give you a rough estimate of the size.

How Many People Does a Wedding Cake Feed?

For weddings we often see couples going for taller tiered cakes because it’s more aesthetic and contemporary.

More tiers means more servings for your guests.

Don’t get overwhelmed, start with how big your serving sizes will be.

Coffee vs Dessert Portions Explained

When it comes to wedding cakes there are two standard portion sizes.

Dessert Size Portion: 1” x 2” serving sizes for small-medium weddings with a focus on dessert.

Coffee Size Portion: 1” x 1” serving size for large weddings where you can chat and eat at the same time.

So what is the best size cake for your wedding?

If your wedding food is more focused on the dessert then go for the dessert sized portion.

If your wedding is prioritising the other food or there are more desserts then coffee portions will be great for those.

This is totally up to you which one you go with.

Wedding Cake Servings by Tier Size

Most wedding cakes you get will go up to 4 tiers.

You can go more, but then it starts to get crazy, and most couples don’t need to facilitate more than 200+ guests.

These are the 4 basic tiers however for each tier you can go short or tall, that’s why we’ve suggested a range.

Single Tier Wedding Cakes

Single tier wedding cakes can come in various sizes including short and tall, they will often feed from 20-50 people.

These types of cakes are not as common for weddings as couples prefer a bigger cake that looks modern.

These cakes are usually 6 inches but can be up to 12 inches depending on how many guests you have.

Two Tier Wedding Cakes

Two tier wedding cakes are a popular choice for weddings because they combine aesthetics and practicality.

Most weddings will have a moderate number of guests around 75-100.

This is perfect for a two tier custom cake.

Three Tier Wedding Cakes

Three tier wedding cakes are your sweet spot because they aren’t too big; they steal the show whilst feeding a large attendee list.

This is the size you can show off your cake in style without sacrificing on anything.

Four Tier Wedding Cakes

Now this cake is for those that are inviting the whole neighbourhood.

Four tiers is necessary when you need to feed over 150+ people.

Even so, most times this can be accommodated with a wider/taller 3 tier cake which often looks more appealing.

If you’re wondering how much different sizes and tiers can cost, take a look at our Wedding Cake Cost Guide, it breaks down average Sydney wedding cake prices by size, tier and design so you can plan with confidence.

Wedding Cake Sizes by Guest Numbers

Up to 50 guests: Single tier

50–100 guests: Two tier

100–150 guests: Three Tier

150+ guests: Four Tier

How to Choose the Right Wedding Cake Size

So how big or how small should your wedding cake be?

Well there are a few factors to consider before settling on a specific cake size.

Portion size

If you’re going for a dessert size portion, well you essentially need about double the cake.

1 dessert size portion will move you from two tier to three tiers so comfortably feed everyone.

1 or 2 slices of cake is the norm.

Guest list size

Your guest list is the most important factor when determining your wedding cake size.

As discussed before, estimate how many people are attending your wedding and this will give you a rough idea of the size.

Over estimating is better than under estimating.

Whether cake is served as main dessert or alongside sweets

If you’re serving other desserts alongside your wedding cake you may require less cake.

For instance if you serve every 2nd guest a piece of cake and the other guest gets some other delicious treat, then you might only need to cater for half as many people.

Leftovers

While it doesn’t always happen, the couple may want to take some home after the event to enjoy.

In these cases, you might want to add a little bit extra cake to however many you have currently estimated.

Cake always tastes better the next day.