Pizza Party Calculator
Enter your guest count and we'll tell you exactly how many pizzas to order. Works for office parties, birthdays, game nights, and more.
Your Party Plan
🍕
4
Pizzas to Order
🔪
40
Total Slices
👤
3
Slices Per Person
📐
616
Total sq in of Pizza
💡 Pro Tip: One 14″ large has 96% more pizza than a 10″ small. Always order larger sizes for better value!
🎯 Accurate Based on Real Slice Data
100% Free No Signup Required
🍕 All Sizes 10″ to 18″ Covered
📋 Quick Reference
How Many Pizzas for Common Group Sizes
Based on large (14″) pizzas with 10 slices each and normal appetites.
| Guests | Slices Needed | Large Pizzas | Medium Pizzas | Total Pizza Area |
|---|---|---|---|---|
| 🧑🤝🧑 5 people | 15 | 2 | 2 | 308 sq in |
| 👨👩👧👦 10 people | 30 | 3 | 4 | 462 sq in |
| 🎉 15 people | 45 | 5 | 6 | 770 sq in |
| 🏢 20 people | 60 | 6 | 8 | 924 sq in |
| 🎊 30 people | 90 | 9 | 12 | 1,386 sq in |
| 🏟️ 50 people | 150 | 15 | 19 | 2,309 sq in |
❓ FAQ
Pizza Party Questions
For 10 adults with normal appetites eating large pizzas (10 slices each), you need about 3 large pizzas. This gives 3 slices per person. For hungry eaters or teenagers, order 4 pizzas. If children are included, reduce by 1 pizza per 3-4 kids.
Adults typically eat 2-3 slices of pizza. Children eat 1-2 slices. Hungry adults or teenagers may eat 4+ slices. Our calculator adjusts automatically based on your appetite setting.
For 20 adults with normal appetites, order 6 large pizzas (10 slices each = 60 slices total, 3 per person). For a mix of adults and kids, or if you're serving sides, use our calculator above for an exact count.
Large pizzas are almost always better value for parties. A 14″ large has 96% more pizza area than a 10″ small but usually costs only 40-50% more. Use our Pizza Size Calculator to compare exact price per square inch for your local prices.
🍕 More Tools
Need to Compare Pizza Sizes?
Use our main calculator to compare two pizzas side-by-side and find the best price per square inch.