Who this is for: For bakers quoting 'how many does it feed?' without guessing — and for customers who think a 6-inch feeds thirty.
Pick shape and size — get the standard serving count for party or wedding cuts, plus the per-serving price once you set one.
Quick answer: Standard cake servings: 6-inch round = 12 party (15 wedding), 8-inch = 20 (26), 10-inch = 28 (36), 12-inch = 40 (52); a 9×13 sheet = 24. Wedding cuts (1×2×4) yield ~30% more than party cuts (2×2). At $4.50 per serving, an 8-inch cake quotes at $90 wedding-style.
Cut style
$
Party $3–6 · wedding $4.50–12
Servings
20
8" round · party cut
Quote this cake at
$90
20 × $4.5
Per serving sanity
$4.5
in the working band
Size (round)
Servings (party)
Price @ $4.5/serving
4"
8
$36
5"
10
$45
6"
12
$54
7"
15
$68
8"
20
$90
9"
24
$108
10"
28
$126
12"
40
$180
14"
55
$248
16"
72
$324
Quote one size above the raw headcount — better a slice left than a guest unserved. Square serves ~20–25% more than round at the same size.
Counts follow standard Wilton-style cutting: party 2×2 in, wedding 1×2×4 (tall slice) — wedding cuts yield ~30% more servings from the same cake.
Core facts
Party cut
2×2 in — generous slice
Wedding cut
1×2×4 in — +30% servings
8" round
20 party / 26 wedding
9×13 sheet
≈24 party servings
Price it
Servings × your per-serving rate
Status
Pricing method: cost-plus (ingredients + labor + overhead, marked up to your target margin), the standard home-bakery approach. Serving counts follow Wilton-style party/wedding cuts. Compiled September 2026 — prices are estimates; your local market decides the final number. Home sellers: check your state's cottage food rules.
How many servings does a cake have?
Serving counts are cutting conventions, not opinions: party cuts are 2×2 inches (generous), wedding cuts are 1×2×4 (tall, slim — served with the tier on its side). This calculator applies the standard Wilton-style counts — an 8-inch round serves about 20 party-style or 26 wedding-style; a 9×13 sheet serves about 24 party; a 6-inch round is a 12-serving cake, full stop. Set your per-serving price and the tool shows what each size should sell for — the fastest way to build a size-based price list. The full chart sits below the calculator for the menu page.
Common uses
Answering 'how many people does an 8-inch feed?' with authority
Building a by-size price list for your cake menu
Converting a guest count into the right tier sizes for a wedding
Explaining why a 6-inch cake can't serve a 30-person party
Frequently Asked Questions
How many does an 8-inch cake serve?
About 20 party servings (2×2 cuts) or 26 wedding servings (1×2×4). The 6-inch round is 12 party / 15–16 wedding; a 10-inch round is 28 party / 36 wedding. The chart below lists the standard counts by size.
Party vs wedding servings — what's the difference?
Cut geometry. Party slices are 2×2 inches; wedding slices are 1×2×4 — half the width, so roughly 30% more servings from the same cake. Quoting a wedding cake with party counts leaves 30% of the cake unpaid for.
How do I price per serving?
Per-serving price = cake price ÷ servings, worked from your cost-plus math. Home bakers typically land $3–6 per serving for custom work; wedding servings with design detail commonly $4.50–8. The wedding calculator on this site applies the complexity multiplier for you.
What size for 50 guests?
One 12-inch round (40 party) plus a 6-inch round (12) covers ~52 with margin; or a two-tier 10+8 for 28+20 = 48. Always quote one tier above the raw count — better a slice left than a guest unserved.
Do square cakes serve more than round?
Yes, same-size squares serve about 20–25% more: an 8-inch square ≈ 24 party servings vs 20 for the round. Sheet cakes are the value format — a 12×18 half-sheet serves about 40.