How many pizzas should you buy for 10, 20, 30, 40 or even 50 people (or more)? Considering that the average american consumes 27lbs of pizza a year (Pizza Market Place), serving pizza is always a popular food choice. If you are planning for a party or trying to feed a large group of people, the Pizza Calculator will help you plan how many pizzas to order so that everyone is happy..
On average there are: 6 slices per small (8-10") pizza, 8 slices per 12 inch pizza (medium), 10 slices on a large (14-16") pizza and 12 slices on an extra-large pizza. You should confirm the number of slices before ordering because this will vary between pizza providers.
For children's parties or when serving pizza as a side item, ask that your pizzas be cut to 10 slices.
On average, 3 slices are needed per adult, 2 slices per child, and 4 slices for big eaters and teens.