How many pizzas do you need for 15 people? The short answer: order 5-6 large pizzas for 15 adults, or 4-5 large pizzas if you have a mix of adults and children. This mid-sized gathering is one of the most common party sizes, and getting the pizza count right ensures everyone leaves happy without breaking your budget.

Quick Answer: Pizza for 15 People

Pizza Quantities for 15 Guests

All Adults (moderate appetite): 5-6 large pizzas
Mixed Adults and Children: 4-5 large pizzas
Mostly Children: 3-4 large pizzas
Hungry Adults (game day): 7-8 large pizzas
Light Eaters (with sides): 4-5 large pizzas

The Math Behind Pizza for 15

For 15 adults with average appetites:

15 people × 3 slices per person = 45 slices needed
45 slices ÷ 10 slices per large pizza = 4.5 pizzas
Round up + buffer = 5-6 large pizzas

The buffer is essential—you don't want anyone leaving hungry. Having an extra pizza allows for seconds and accounts for varying appetites. And leftover pizza? That's a bonus, not a problem!

Recommended Variety for 6 Pizzas

2-3 Cheese Pizzas: The universal crowd-pleaser
2 Pepperoni Pizzas: Most popular topping
1 Veggie Pizza: For vegetarians and variety

This distribution ensures everyone has options. If you know your group's preferences, adjust accordingly—more pepperoni for meat lovers, extra veggie for health-conscious groups.

Budget for 15 People

Estimated Costs (6 Large Pizzas)

Little Caesars: $42-$54
Domino's: $60-$84
Pizza Hut: $72-$96
Papa John's: $84-$108
Local Pizzeria: $90-$132

That's only $3-$9 per person!

Need an Exact Calculation?

Our free calculator factors in ages, appetites, and preferences for a precise recommendation.

Try the Pizza Calculator

Real-World Scenarios

Family Dinner

Group: 8 adults, 7 children

Order: 5 large pizzas

Breakdown: 2 cheese, 2 pepperoni, 1 veggie

Office Lunch

Group: 15 adults

Order: 6 large pizzas

Breakdown: 3 cheese, 2 pepperoni, 1 veggie

Game Night

Group: 15 hungry adults

Order: 7 large pizzas + wings

Breakdown: 2 pepperoni, 2 cheese, 2 meat lovers, 1 veggie

Frequently Asked Questions

How many large pizzas for 15 adults?

5-6 large pizzas for adults with average appetites, providing about 3 slices per person.

How many medium pizzas for 15 people?

7-8 medium pizzas (8 slices each) to equal the same amount as 6 large pizzas. However, large pizzas are more cost-effective.

What's the best pizza chain for 15 people?

Little Caesars offers the best value. Domino's has great online deals. Local pizzerias provide quality but cost more.

Key Takeaways

Order 5-6 large pizzas for 15 adults
For mixed groups with kids, 4-5 large pizzas is enough
Budget $42-$132 depending on the chain
Include a mix of cheese, pepperoni, and veggie options
Order 1-2 hours ahead for best service

How Many Pizzas for 15 People? Party Planning Guide