How Much Wedding Cake to Order: The No‑Stress Calculator

First thing’s first – you don’t want to run out of cake, but you also don’t want a mountain of leftovers. The trick is to match the number of guests with the right cake size. Below is a straight‑forward way to get it right, no math degree required.

Step 1: Count Your Guests and Decide on Serving Size

Start with the total number of people who will actually eat cake. Exclude kids who won’t have a slice, and double‑check any plus‑ones. Once you have that number, think about how big each slice should be. A typical wedding slice is about 2 inches by 2 inches. If you prefer bigger pieces, add 10‑15 percent to the total.

Simple formula: Guests × 1.1 (for generous slices) = Servings needed. For example, 120 guests × 1.1 = 132 servings. That’s the number you’ll aim for.

Step 2: Choose the Right Tier Combination

Most bakers sell cakes by tier, and each tier serves a set number of guests. Here’s a quick cheat sheet:

• 2‑tier (8‑inch + 10‑inch) – serves about 50‑60 people
• 3‑tier (8‑inch + 10‑inch + 12‑inch) – serves about 100‑120 people
• 4‑tier (8‑inch + 10‑inch + 12‑inch + 14‑inch) – serves about 150‑180 people

Match your serving number to the nearest tier combo. If you need 132 servings, a 3‑tier cake gets you close, but you might add a small extra tier or a sheet cake on the side to hit the exact count.

Don’t forget the wedding cake topper and any design elements – they add a bit of weight, but they don’t change the serving count.

Now, let’s talk a few real‑world tweaks.

Round up, not down. If your calculation lands at 127 servings, order for 135. It’s cheaper to have a few extra slices than to scramble for a last‑minute dessert.

Consider dietary needs. If 10‑15 percent of guests are gluten‑free or vegan, plan a separate mini‑cake or cupcakes that match those requirements. This keeps the main cake serving count accurate.

Leftover plan. Talk to your baker about what to do with leftovers. Some offer to freeze slices for you, or you can give them to the bridal party.

Putting it all together is easy. Write down your guest total, apply the 1.1 multiplier, pick the tier combo that covers the number, and add a small buffer. Talk to your baker with those numbers, and you’ll walk away with a cake that’s just right.

Bottom line: a quick calculation, a tier guide, and a bit of padding are all you need to order the perfect amount of wedding cake. Enjoy every slice without the stress of guesswork.