Party Pizza Calculator

For 20 guests (12 kids, 8 adults), plan for about 7 large pizzas (48 slices total). This accounts for 2 slices per child and 3 slices per adult, plus a 15% buffer so nobody goes hungry. If pizza is the main meal, add one extra pizza to be safe.

Plan for 2 slices per child (ages 3-12) and 3 slices per adult. Teenagers typically eat 3-4 slices. If pizza is a snack alongside other food, reduce to 1 slice per child and 2 per adult. Our calculator adjusts for your exact kids-to-adults ratio.

A standard large pizza has 8 slices. Medium pizzas typically have 6 slices. Our calculator works with both sizes. When ordering for a party, large pizzas are more cost-effective — you get more food per dollar compared to ordering multiple mediums.

Keep it simple: cheese and pepperoni are the most popular with kids. For a party of 20+, order 50% cheese, 30% pepperoni, and 20% specialty (like Hawaiian or veggie). Always have at least one plain cheese option for picky eaters and dietary restrictions.

For small parties (under 10 pizzas), order 1-2 hours before serving time. For large orders (10+ pizzas), call ahead and pre-order the morning of the party. Most pizza shops can schedule delivery for a specific time. Weekend afternoons are peak times, so ordering early avoids delays.

For parties under 20 guests, homemade pizza can save 30-50%. For larger parties, ordering is usually more practical and only slightly more expensive when you factor in time, ingredients, and oven capacity. Many chains offer party deals: 5 large pizzas for $40-60, which is hard to beat.