Pizza Calculator — How Many for Your Party?

Never guess how many pizzas to order again. Tell us about your group and we'll calculate exactly how many pizzas you need.

Adults attending

Children attending

How hungry is your group?

Size of pizzas you're ordering

Total Slices = (Adults × Slices Per Person) + (Children × 2); Slices per person: Light=2, Average=3, Hungry=4; Pizzas Needed = Ceiling(Total Slices ÷ Slices Per Pizza); Medium (12"): 8 slices, Large (14"): 10 slices, XL (16"): 12 slices
Example: 15 adults + 5 kids, average appetite, large pizzas; Total slices: (15×3) + (5×2) = 55; Pizzas needed: Ceiling(55÷10) = 6 large pizzas; Total slices ordered: 60; Leftover: 5 slices; Estimated cost: $108

How many pizzas do I need for my party?

General rule: Order 3 slices per adult, 2 slices per child, and 1 slice per teenager. Pizza slice counts: Small (10"): 6 slices, Medium (12"): 8 slices, Large (14"): 10 slices, Extra Large (16"): 12 slices. Quick formula: Total slices needed = (Adults × 3) + (Children × 2); Pizzas = Total slices ÷ slices per pizza, round up. Example: 15 adults + 5 kids at a party = (15×3) + (5×2) = 55 slices. At 10 slices per large pizza = 6 large pizzas. Always order 1 extra pizza for good measure - leftover cold pizza is a win!

How many people does a large pizza feed?

A large pizza (14", 10 slices) feeds: 2-3 adults as a full meal, 3-4 adults with sides (salad, wings, breadsticks), 4-5 children, 2 adults with big appetites (sports team, teenagers). For mixed groups, plan: Light eaters (lunch, with sides): 1 large per 4 people, Average eaters (dinner party): 1 large per 3 people, Hungry eaters (teenagers, athletes): 1 large per 2 people. If pizza is the ONLY food, order more. If serving sides (salad, wings, dips), you can order fewer pizzas.

What size pizzas should I order for a party?

Best party pizza sizes: Large (14") is the sweet spot for parties - most pizza shops make them fastest, easiest to share, good variety of toppings across multiple pizzas, Medium (12") for smaller groups (under 8 people), Extra Large (16") for big groups - fewer boxes to manage but harder to offer topping variety. Pro tip: Order multiple sizes if your group has varied tastes - 2 larges for popular toppings (pepperoni, cheese) + 1 medium for specialty toppings. Cost comparison: 1 XL (16") = 1.3 larges in area but usually costs less, 2 mediums = 1.1 larges in area but often costs MORE. Large pizzas offer the best value per square inch.

How much should I budget for pizza at a party?

Average pizza costs (2025): Large pizza: $14-$22 (delivery), Large pizza: $10-$16 (pickup), Party deals (3+ pizzas): $10-$14 each, Delivery fee: $3-$8 + 15-20% tip, Party combo deals (pizzas + wings + drinks): $50-$80 for 3-4 pizzas. Budget guide: 10 people: $50-$70 (3-4 large pizzas), 20 people: $90-$130 (6-8 large pizzas), 30 people: $130-$190 (9-12 large pizzas), 50 people: $200-$300 (15-20 large pizzas). Money-saving tips: Order pickup instead of delivery (save $15-25), Use coupon apps (Slice, Pizza Hut app deals), Order during lunch hours (often cheaper), Call local pizzerias (independent shops often cheaper than chains).