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Free Party Tool

Cake Calculator & Serving Guide

Round cake or sheet cake? 6-inch or 10-inch? Calculate exactly how much cake you need for your guest count.

Pizza Party

SHOPPING LIST โ€ข 20 GUESTS

๐ŸŽ‰
Pizza & Main
Large Pizzas (8 slices)
0

* Suggested: 30% Cheese, 40% Pepperoni, 30% Specialty

Drinks
2L Soda Bottles
0
Dessert
Calculated by
OnePageParty.com

Party Food Calculator

Instant quantity estimates for your event

1. Party Details

2. Your Shopping List

Pizzas Needed
Large (8 slices)
0

Topping Guide:

  • Cheese (30%) 0
  • Pepperoni (40%) 0
  • Specialty (30%) 0
Triangle PlatesShop
Recommended Cake
For 20 guests
Toppers & CandlesShop
2L Soda Bottles
~0.0 Liters total
0

Budget Estimator

Track your total party cost

$
/ pizza
Pizza Cost (0 x $0)$0.00
Supplies (Est.)$0.00
Tax & Tip (20%)$0.00
Total Budget$0.00
Ordering exact quantities saves you ~$0 vs. standard catering estimates.
๐Ÿ‘† Enter the price of one pizza above to unlock the full budget breakdown.

Confidence Interval

Saver0Pizzas
Standard0Pizzas
Feast0Pizzas

Cake Serving Guide (The "Party Slice")

A "Party Slice" is typically smaller than a "Generous Slice" you might cut at home. Our calculator assumes standard party servings:

  • Round Cakes: Slices are typically wedge-shaped, about 1.5 to 2 inches wide at the back.
  • Sheet Cakes: Cut into 2" x 2" or 2" x 3" squares. This is the most efficient way to serve large crowds.
  • Tiered Cakes: Usually for weddings, serving sizes are smaller (1" x 2").

Common Cake Sizes & Servings

๐Ÿฐ Round Cakes

  • 6 Inch Round 8-10 servings
  • 8 Inch Round 12-14 servings
  • 9 Inch Round 18-22 servings
  • 10 Inch Round 25-30 servings
  • 12 Inch Round 35-45 servings

๐Ÿ“ Sheet Cakes

  • Quarter Sheet (9x13) 12-20 servings
  • Half Sheet (11x15) 30-48 servings
  • Full Sheet (18x24) 60-96 servings

Pro Tip: The "Outer Ring" Method

For round cakes larger than 10 inches, don't cut simple wedges! Cut a circle in the middle (about 4 inches from the edge), then cut slices from the outer ring. Finally, cut the center core into wedges. This prevents long, floppy slices that fall apart.