Pizza Calculator: How Many Pizzas Do I Need?

Planning a pizza party? The most common question is: "How much pizza should I order?" Order too little, and guests go hungry. Order too much, and you're eating leftovers for a week.

Use our Pizza Calculator Guide below to get the perfect number every time. If you're specifically ordering medium pizzas, check out our deep dive on How Many Slices in a Medium Pizza to help your calculations.

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The "Golden Rule" of Pizza Calculation

A standard large pizza (14 inches) typically has 8 slices.
Here is a simple breakdown per person:

• Adults (Average approx): 2-3 slices
• Adults (Heavy Eaters): 3-4 slices
• Children: 1-2 slices

Quick Reference Table

Number of Guests	Children Only	Mixed Group	Adults Only
5 Guests	2 Large Pizzas	2 Large Pizzas	3 Large Pizzas
10 Guests	3 Large Pizzas	4 Large Pizzas	5 Large Pizzas
20 Guests	5 Large Pizzas	7 Large Pizzas	8 Large Pizzas
50 Guests	12 Large Pizzas	15 Large Pizzas	19 Large Pizzas

Note: These estimates assume you are serving other sides like Breadsticks or Wings.

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Factors That Change the Equation

1. Time of Day: Lunch crowds eat less than dinner crowds.
2. Type of Pizza: Deep dish is more filling than thin crust.
3. Other Food: Are there appetizers? Dessert?
4. Appetite Level: Teenage athletes will eat more than toddlers.

Pro Tip: It is always better to over-order slightly than to run out. Leftover pizza is a breakfast of champions!

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Ready for the Perfect Party?

Now that you use the calculator, you know exactly what you need. Don't guess—get the right amount of hot, fresh pizza to make everyone happy.

Check out our crowd-favorite menu items below and start your order!