How many pizzas do I need for 20 people?

For 20 average eaters at a typical party,plan about 50 slices. That is roughly 5 large pizzas(10 slices each)or 7 large if the group is hungrier. Use the hunger slider and party preset for a tighter estimate.

How many slices are on a large pizza?

Most large pizzas are cut into 10 slices,medium into 8,and small into 6. This calculator uses those standard counts.

Pizza Calculator | How Many Pizzas Do I Need for a Party?

20 people → Need 7 large pizzas 🍕

Total slices needed: 56 · Estimated cost: $84

Party details

Hunger level

Kids vs adults split (more accurate)

Total guests

Average Eaters · 3 slices per adult · 1.5 per kid

Enter how many people in each group — count each guest in one row only.

Kids1.8 slices each

Light Eaters2 slices each

Average Eaters3 slices each

Hungry Group4 slices each

Very Hungry5 slices each

Total guests: 0 — enter at least 1 person in any row

Party type

Pizza size to order

Pizza chain (pricing)

Price per large pizza ($)

Budget planner ($, optional)

Rough order summary

Order 7 large pizzas for 20 guests 🍕

You need about 65 slices · Est. cost $84 · ~9 slices leftover

👥 20 guests🍕 7 large📊 65 slices💰 $84

📊 Slice breakdown

Pizza size	Slices	You need

Total slices needed: 56

🍕 Size comparison

3 large pizzas = 5 medium pizzas (same slice count)

💰 Cost & calories

Estimated cost$84

Calories (est.)5,950 kcal

Likely leftovers4 slices 🍕

📈 Drinks & sides

20 people → 6 soda bottles · 4 garlic breads · 2 wing trays (optional)

🔥 Topping planner

For 7 pizzas: Pepperoni ×3 · Veggie ×2 · Cheese ×2

Topping	Share	Pizzas

🎉 Party food combo

Pizza + wings + drinks bundle: order 7 large pizzas, 2 wing trays, and 6 sodas for ~20 guests.

We need 7 large pizzas for tonight's party 🍕 (~$84)

How to use this tool

Pick a hunger level for the whole group (Light, Average, Hungry, etc.) and enter your guest count — or toggle Kids vs adults for a tighter estimate. Choose Custom to enter how many people fall into each eater type separately. Add a party preset (birthday, office, game night, school, movie). The hero answer updates instantly: e.g. 20 people → 7 large pizzas.

Choose your pizza size and chain (Domino's, Pizza Hut, Papa John's, Little Caesars) for a cost estimate, or enter a custom price. Optional budget mode suggests the best medium/large mix under your limit. Review the slice table, size comparison, leftover prediction, calories, drinks & sides, and topping split (40% pepperoni, 30% veggie, 30% cheese). Copy or WhatsApp the party summary to your group chat before you order.