One of the first questions couples ask when planning their wedding cake is a simple one: How much cake do we actually need?
And while your guest count is a great place to start, it isn't the only thing to consider. The size of your cake will also depend on how you plan to serve it, whether you'll be offering other desserts, and the style of cake you've chosen.
A beautifully designed wedding cake can be a centrepiece in its own right, but it should also be thoughtfully sized to suit your celebration. You want enough for everyone to enjoy a slice without ordering considerably more than you need.
Whether you're planning an intimate wedding in Newcastle, a vineyard celebration in the Hunter Valley or a relaxed lakeside reception in Lake Macquarie, here's what to consider when choosing the right size for your wedding cake.
1. Start with your guest count
Your guest count is the best starting point when working out how much cake you'll need.
However, it's worth thinking about how many guests are likely to want a slice. Not everyone will necessarily have cake, particularly if you're serving a plated dessert, dessert table or a selection of other sweets.
For most weddings, I recommend using your total guest count as a starting point and then considering the style of service you'd like.
For example:
Intimate weddings: A smaller single-tier or two-tier cake can make a beautiful statement without feeling excessive.
Medium-sized weddings: A two or three-tier cake can provide a lovely centrepiece while allowing enough portions for your guests.
Larger celebrations: A larger multi-tier cake, an oversized dessert centrepiece or a combination of a display cake and additional servings may be more suitable.
The most important thing is to choose a cake that feels right for your celebration, rather than simply ordering based on the number of guests.
2. Understand the difference between coffee and dessert portions
This is probably the most important consideration when deciding how much wedding cake to order.
Not all cake portions are the same, and the way you intend to serve your cake can make a significant difference to the size required.
Coffee portions
Coffee portions are smaller slices, generally around 1 x 1 inch.
They're ideal when the cake is being served alongside other desserts, after a substantial meal, or as part of a larger dessert table.
If you're planning to offer a variety of sweet treats, a smaller coffee portion is often more than enough for guests to enjoy a taste of your wedding cake.
Dessert portions
Dessert portions are more generous, generally around 1 x 2 inches.
These are better suited to weddings where the cake is intended to be the main dessert, rather than one of several sweet options.
If you'd like every guest to receive a generous slice of cake, it's important to factor this into your sizing from the beginning.
A helpful rule of thumb: If your wedding cake is the main dessert, plan for dessert portions. If you're serving a dessert table or additional sweets, coffee portions may be more appropriate.
3. Are you serving other desserts?
Your dessert menu can have a big impact on how much wedding cake you actually need.
If you're planning a traditional cake-cutting moment followed by a selection of desserts, you may not need a full dessert portion of cake for every guest.
For example, if you're offering:
A wedding cake alongside a dessert table
A selection of individual desserts
A plated dessert following the reception meal
A combination of cake and alternative dessert centrepieces
Smaller cake portions may be the perfect option.
This is also a lovely opportunity to explore something a little different. Rather than having one large traditional wedding cake, some couples choose to combine a smaller statement cake with an alternative dessert, such as a giant tiramisu, millefoglie or pavlova.
The result can feel much more personal and gives guests something a little unexpected to enjoy.
4. Does the style of wedding cake affect the number of serves?
Absolutely.
A cake's serving capacity isn't determined by its appearance alone. Its height, diameter, shape and internal structure can all influence how many portions it provides.
Traditional round tiered cakes are generally straightforward to portion, but contemporary designs can be a little different.
For example:
Tall cakes: A taller cake may provide more portions than a shorter cake with the same diameter, depending on how it is constructed and cut.
Heart-shaped cakes: These can have a different serving capacity to a round cake of a similar width.
Sculptural or unusual shapes: The design may affect how efficiently the cake can be portioned.
Multiple smaller tiers: These can offer flexibility when catering for different portion sizes or flavour preferences.
This is why I always recommend discussing your guest count and serving plans with your cake designer before settling on a particular size.
A design that looks perfect in an inspiration photo may need a little adjustment to provide the number of portions you're after.
5. What about alternative wedding desserts?
Wedding cakes don't always need to be traditional tiered sponge cakes.
If you're looking for something a little different, there are some beautiful alternatives that can also be sized to suit your guest count.
An oversized tiramisu is a wonderful option for couples who love Italian-inspired desserts. It offers something a little different from a traditional wedding cake while still creating a beautiful centrepiece.
As a general guide, our giant tiramisu options include:
14-inch: Approximately 50–70 serves, depending on portion size and how it's served.
17-inch: Approximately 80–100 serves.
20-inch: 120+ serves.
A smaller tiramisu can also work beautifully as an additional dessert alongside a traditional wedding cake.
For something elegant and European-inspired, a millefoglie is made with delicate layers of crisp pastry and cream, often finished with fresh seasonal fruit.
Unlike a traditional tiered cake, millefoglie is tailored to the guest count and assembled with its serving style in mind. It can be created as a statement centrepiece or as part of a larger dessert experience.
Giant pavlova
A giant pavlova is another beautiful alternative, particularly for spring and summer weddings.
Because pavlovas are wider and generally served in generous wedges, their sizing is approached a little differently from a traditional tiered cake. They can be designed for intimate celebrations through to much larger gatherings.
Each of these options has its own serving considerations, so it's worth discussing your guest numbers and dessert plans before choosing a size.
6. Should you order extra cake?
It's natural to want to make sure every guest has the opportunity to enjoy a slice.
However, ordering significantly more cake than you need isn't always necessary.
A few things to consider:
Are you expecting every guest to have cake?
Will there be other desserts available?
Is the cake being served as the main dessert or later in the evening?
Would you prefer generous dessert portions or smaller coffee portions?
Are you hoping to have leftovers to enjoy the following day?
If having leftovers is important to you, that's absolutely something to factor into your order. Otherwise, a well-planned cake size should provide enough for your intended serving style without excessive surplus.
It's also worth remembering that your venue or caterer may have its own cake-cutting and serving arrangements. Confirming these details beforehand can help avoid any confusion on the day.
7. Let your cake designer help you choose the right size
One of the benefits of ordering a custom wedding cake is that the design and sizing can be tailored to your celebration.
You don't need to arrive with an exact tier combination or know precisely how many portions each size will provide. That's something we can work through together.
When enquiring about your wedding cake, it's helpful to share:
Your estimated guest count
Whether the cake will be served as dessert or as a smaller coffee portion
Whether you'll be offering additional desserts
Your preferred cake style or inspiration images
Your venue and wedding date
From there, we can work out a size that suits your guest numbers, design preferences and overall wedding styling.
At Cakes by Han, every wedding cake is individually designed and made to order, with careful consideration given to both presentation and flavour. Whether you're dreaming of a modern tiered cake, a statement tiramisu or a European-inspired millefoglie, the goal is to create something that feels just right for your day.
Planning Your Wedding Cake in Newcastle or the Hunter Valley?
Choosing the right wedding cake is about more than simply matching a cake to your guest count. It's about finding the right balance between presentation, flavour and how you'd like your guests to enjoy it.
If you're planning a wedding in Newcastle, Lake Macquarie, the Hunter Valley or the surrounding regions, I'd love to help you work through the options.
You can explore the wedding cake gallery, browse the wedding cake pricing guide, or get in touch to discuss a design tailored to your celebration.
A beautiful wedding cake should look wonderful, taste exceptional and be thoughtfully sized for the people you're sharing it with.
Han x