How many pizzas for 30 people?
For 30 people at 3 slices each, order 12 pizzas of 14 inches — 96 slices, covering the 90 slices with a few to spare.
How to work it out
- 30 adults × 3 large slices = 90 slices of a 14 in pizza (19.2 sq in each)
- = 1,732 sq in ÷ 154 sq in per 14 in pizza = 12 pizzas (96 slices)
Thirty people is a classroom, a youth team or a big birthday. At that size the order gets big enough that it is worth calling ahead, splitting the delivery, and thinking about extra-large pizzas.
Adjust for your project
More options: Kids · Cut · Extra
- Slices (at this size and cut)
- 96 slices
- Same amount in 14 in large pizzas
- 11.3
- Adults fed per pizza
- 2.7
- Area of one pizza
- 154 sq in (993 cm²)
- For ten or more pizzas, call the shop a day ahead and ask for staggered delivery so the second half arrives hot.
Pizzas for your guests by size (slices each as above)
| Pizza size | Pizzas to order | Slices (at this size and cut) | Adults fed per pizza |
|---|---|---|---|
| 10 in small | 23 pizzas | 184 slices | 1.4 |
| 12 in medium | 16 pizzas | 128 slices | 2 |
| 14 in large | 12 pizzas | 96 slices | 2.7 |
| 16 in XL | 9 pizzas | 72 slices | 3.5 |
| 18 in | 7 pizzas | 56 slices | 4.4 |
Twelve large, or nine extra large
At three large slices each, thirty adults eat about 90 slices — roughly 1,730 square inches. Twelve 14 in pizzas give 1,847 square inches; nine 16 in pizzas give 1,810. Either works. Twelve boxes take up a whole table, so for a buffet the extra-large route saves space, and it is often cheaper per square inch. Medium pizzas are the expensive way to feed thirty — you would need sixteen.
A plan for thirty
- Order the day before and ask for two deliveries 20 minutes apart, so the second half arrives hot while the first is being eaten.
- Cut squares for kids. A large “party cut” into small squares stretches further with young children.
- Drinks: about two cans or bottles per guest per hour for a pizza party — see how many cans of soda for 100 guests and scale down.
- Plates and napkins: two small plates each; pizza boxes make poor serving trays once they get soggy.
For a team party, the appetite setting matters. Teenage athletes at four slices each push the order to fifteen large pizzas; adults at a lunch meeting with salad might eat two each, and eight large pizzas would do. Count the kids separately in the children box — each counts as half.
Smaller group: how many pizzas for 20 people. Wings on the side: how many wings for 20 people — multiply by one and a half for thirty.
Different size? Use the full Pizza Party Calculator.
What you’ll need
- Heavy-duty paper plates (bulk)Budget price
Sturdy plates that do not fold under a scoop of baked beans. Get small ones too for dessert.
See options on Amazon (opens in a new tab) - Plastic party cups (16 oz)Budget price
Guests lose track of their cup, so plan two or three per person. A marker by the stack helps.
See options on Amazon (opens in a new tab)
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Frequently asked questions
How many extra large pizzas for 30 people?
9 pizzas of 16 inches at 3 large-slice equivalents each.
How many pizzas for 30 kids?
About 6 pizzas of 14 inches at 1½ slices each.
How many pizzas for 40 people?
15 pizzas of 14 inches at 3 slices each.
Other common sizes
- How many pizzas for 20 people — 8 pizzas
- How many slices in a large pizza — 8 slices
Sources
- Domino’s — Nutrition guide (serving sizes by pizza size) (opens in a new tab) — Hand-tossed 12 in medium, 14 in large and 16 in extra large are each listed as 1/8 of a pizza per slice; New York style as 1/6.