The short answer
For a 12 inch wood-fired pizza cut into six slices, plan on roughly three slices per adult as a main meal, which works out to about one pizza for every two guests. For 100 guests that is approximately 50 pizzas.
| Guests | As the main meal | As one item among several |
|---|---|---|
| 25 | about 13 pizzas | about 8 |
| 50 | about 25 pizzas | about 15 |
| 75 | about 38 pizzas | about 23 |
| 100 | about 50 pizzas | about 30 |
| 150 | about 75 pizzas | about 45 |
| 200 | about 100 pizzas | about 60 |
What shifts the number
- Time of day. An evening reception eats noticeably more than a mid-afternoon party.
- Whether there is anything else. Salads, appetisers and a dessert table can cut pizza consumption by a third.
- Length of service. Continuous service over three hours means people come back. A single seated round does not.
- Who is there. A wedding with lots of children eats differently from a construction crew lunch.
- Alcohol. A long open bar reliably increases how much people eat.
The practical version: with a live oven, running out is a service problem rather than an ordering
problem. We keep cooking through the event, so the real planning question is how long the oven runs, not how many
boxes were ordered in advance.
