Cake Serving Calculator
Find out exactly what size cake you need for your party or wedding. Round, sheet, and tiered cake configurations with party and wedding portion sizes.
Recommended Cake Size
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Servings from That Size —
Cupcake Equivalent —
Extended More scenarios, charts & detailed breakdown ▾
Cake Size
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Servings —
Extra Slices (15% buffer) —
Professional Full parameters & maximum detail ▾
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Serving Quantities
Total Servings to Order —
Dietary Alternative Servings —
Cupcake Equivalent —
Budget
Estimated Cake Cost —
How to Use This Calculator
- Enter your guest count.
- Select cake shape — round, sheet, or tiered.
- Choose portion type: party slices are larger, wedding slices are smaller.
- Use the Professional tab for dietary buffers and cost estimation.
Formula
Round cake servings: 6"=8, 8"=12, 10"=24, 12"=40 (party portions).
Sheet cake: 9×13"=24 servings, 12×18"=54 servings.
Example
Wedding with 80 guests: A 6"+8"+10"+12" four-tier cake yields 130 wedding portions — plenty for all guests plus a buffer.
Frequently Asked Questions
- A standard 9×13 inch sheet cake yields about 24 party-size servings (2×2 inch pieces) or up to 35 smaller dessert slices.
- A party slice is typically 1×2 inches wide at the base, 4 inches tall. A wedding slice is 1×1 inch wide — half the size — because guests at weddings usually eat less cake and there are more courses.
- A 10-inch round cake cut into party portions (1×2 inch) yields about 24 servings. Cut into smaller wedding portions it can yield up to 48 servings.
- Yes, many bakers recommend ordering a tiered display cake for cutting and photos, plus a separate sheet cake in the kitchen to serve guests. This keeps costs down while maintaining the visual impact.
Related Calculators
Sources & References (5) ▾
- Wilton Cake Serving Guide — Wilton
- AIB International — Baking Science & Technology — AIB International
- WeddingWire Wedding Cake Planning Guide — WeddingWire
- Joy of Baking — Cake Recipes & Sizing — Joy of Baking
- The Knot — Wedding Cake Guide — The Knot