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 โข 20 GUESTS
๐
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
Recommended Cake
For 20 guests
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.
๐ Enter the price of one pizza above to unlock the full budget breakdown.
Confidence Interval
Saver0Pizzas
Standard0Pizzas
Feast0Pizzas
Budgeting Guides for Your Pizza Party
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
๐ฐ 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
๐ 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.