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Too little pizza is bad, too much as well. How much you need depends mainly on whether pizza is the main meal or a snack next to other food. Here are the rules of thumb that work and a worked example for your party.
Rules of thumb per guest
| Situation | Amount per guest |
|---|---|
| Pizza as main meal, adults | 1 whole pizza (about 6 slices) |
| Pizza as main meal, children up to about 10 | ½ pizza |
| Pizza as a snack next to a buffet or barbecue | 1 to 2 slices |
| Midnight snack at a wedding | 1 to 2 slices |
| Pizza with wine or as an aperitif | 1 slice |
These values assume a plate-sized pizza as it comes out of most mobile pizza ovens, cut into six slices. In Italy every guest gets their own pizza, hence the rule of thumb. American guides such as Giordano's instead count about three slices per adult and two per child, but of a much thicker pizza cut into eight.
What changes the amount
- Time of day: people eat more at lunch or dinner than in the afternoon.
- Duration: at a long party many guests come back for more.
- Other food: if there is already a buffet, barbecue or cake, the amount drops noticeably.
- Crowd: a football club eats differently from a coffee morning.
- Weather: warm pizza goes better in the cold, a little less in the heat.
Worked example: garden party with 40 guests
Pizza is the main meal, with salad and cake on the side. Among the guests are 30 adults and 10 children.
| Calculation | Pizzas | |
|---|---|---|
| Adults | 30 × 1 | 30 |
| Children | 10 × ½ | 5 |
| Deduction for salad and cake | about 10 % | - 3 |
| Plan | 32 pizzas |
For a caterer who charges per guest, this calculation is their risk. You simply give the guest count and the setting.
Speed: pizzas per hour
At least as important as the amount is how quickly the pizza reaches the guests. Mobile pizza ovens bake a pizza in a few minutes but often only have one or two baking slots. An oven with one slot manages a good 20 pizzas per hour.
For the garden party above this means: 32 pizzas take about an hour and a half with one oven. That works well, because not all guests eat at once. With 100 guests who all want to eat at 7 pm, it gets tight.
What helps then:
- Longer time slot: pizza spread over the evening instead of a fixed course.
- Slices instead of whole pizzas: everyone gets a slice first and the queue moves faster.
- Second oven: doubles the output.
- Staggered start: children first, then adults.
How to calculate the output of a stand exactly is explained in our article Pizza at the market.
Which and how many varieties?
Two or three varieties are enough. One should be vegetarian, and the Margherita is almost always the most popular. More varieties slow down service because each pizza is topped individually. A split that works for three varieties: about 40 % Margherita, 35 % salami, 25 % the third one. Clarify intolerances and vegan requests with the caterer in advance.
What happens to leftovers
Leftover pizza tastes good the next day too. Ask whether the caterer leaves boxes so guests can take leftovers home. That is better than planning too tight.
The timeline
Frequently asked questions
How much pizza per person as a main meal?
Plan one whole pizza per adult, about six slices. Big eaters manage more, guests who have already eaten less. In mixed groups it usually evens out.
How much pizza per person as a snack?
Next to a buffet or as a midnight snack, one or two slices per guest are enough, so roughly one pizza for three to four guests.
How much pizza do children eat?
Children up to about ten usually eat half a pizza, older children and teenagers often as much as adults.
How many pizzas can a pizza stand bake per hour?
It depends on the oven. An oven with one baking slot manages a good 20 pizzas per hour. Large parties need more time, a second oven or pizza by the slice.
Which varieties should I choose for a party?
Two or three varieties are almost always enough, including a vegetarian one like the Margherita. Few varieties keep service fast.
Sources
- How to Order Pizza for a Large Group, Giordano's (giordanos.com)
We check facts against these sources. Spotted a mistake? Write to us and we will fix it.
