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CrumbCalc

What Size Cake for 25 Guests?

Cutting party slices, a single 10" round seats about 28 — enough for 25. Every option is below.

25 guests need

10" round

about 28 party servings (1½ × 2 in slice) · see all options below

Data & method: Serving counts from the published Wilton cake serving chart (4-inch-tall cakes; party 1½ × 2 in slice, wedding 1 × 2 in slice). Every figure is checked by an automated test. How we calculate →

Check any size or head count

Preset to 25 guests — the reverse lookup below the tiers finds the smallest fit.

Serving style
+ Add tiers for a tiered or wedding cake

Serves about

20

party slices (1½ × 2 in)

Your cake, tier by tier

Next: how much frosting for this cake? →

Or plan backwards — how many guests?

We'll find the smallest cake that seats them, using the party/wedding slice size selected above.

A 10" round seats about 28 party servings — enough for 25.

Every way to seat 25

The chart below shows the smallest cake that covers 25 guests for each shape and slice size — all from the same Wilton figures the calculator uses. "Party" slices are 1½ × 2 in slice; "wedding" slices are the slimmer 1 × 2 in slice, which is why the wedding options run smaller.

Option Smallest fit Seats about
Round, party slices 10" round 28
Square, party slices 10" square 30
Round, wedding slices 9" round 32
Sheet, party slices 9×13" sheet 36

A single cake covers this comfortably. If you'd rather make a moment of it, any two-tier combination whose counts add past 25 works — the calculator below totals tiers live as you pick them. Treat 25 as a minimum: end pieces and uneven cuts always cost a few servings, and leftover cake has never been a problem.

Cake ordered or planned? The frosting calculator and recipe scaler handle the baking side if you're making it yourself.

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Frequently Asked Questions

What size cake do I need for 25 guests?

Cutting party slices (1½ × 2 in slice), a single 10" round seats about 28 — enough for 25. A single 9×13" sheet sheet (36 party servings) also covers it and is the easiest to cut and transport.

What size cake for 25 wedding guests?

Wedding slices are slimmer (1 × 2 in slice), so cakes stretch further: a single 9" round seats about 32. Wedding planners usually add a few servings of margin on top for cutting loss.

Should I round up for 25 guests?

Yes — treat 25 as the minimum. End pieces, uneven cutting and second helpings all reduce the real yield, so a size (or tier) above the exact fit is the safe choice. Leftover cake keeps; running short doesn't fix itself.