How many pizzas for 15 people?
For 15 people, order 7 large pizzas. That’s 56 slices, about 3 each with a few to spare.
plus 0 small pizzas, gluten-free
56 slices for 15 grown-ups. That’s about 3 each, plus 11 spare for whoever said “I’m not that hungry.”
Suggested delivery tip (15%, at least $5):
Feeding the whole office?
Past 20 people, compare catering on cost per head before you order a tower of pizza boxes. Someone else brings the plates.
Same crowd, different appetites
These follow the calculator above, so they change with the size and the headcount.
How we got to 7
15 grown-ups at 3 slices each need 45 slices. We add 10% so nobody’s left eyeing the last one, which makes 50. A large pizza has 8 slices, so 50 ÷ 8 = 6.25, and we round up to 7.
Ordering extra-large instead? At 12 slices a pizza, 15 people need 5 extra-large pizzas.
How to split 7 pizzas
We’d go 3 cheese, 2 pepperoni and 2 veggie or specialty. Cheese is the safe bet for kids and picky eaters, and the veggie pizzas cover anyone who skips meat. If you know your crowd, move pizzas between the three; the total stays the same.
With kids, or other food on the table
We count kids under 12 at 2 slices. If half the group is kids (8 grown-ups and 7 kids), 6 large pizzas will do, and 15 kids on their own need 5.
Serving wings, salad or sides too? We count 75% of the usual slices when there’s other food, which brings 15 grown-ups down to 5 large pizzas. Tick “Also serving wings, salad or other food” above to see it.
Ordering for a sleepover, a book club or a small team lunch
7 pizzas is an easy order for one store. Order well before you want to eat, especially on a Friday or Saturday night, and ask for plates and napkins if you don’t have them.
Questions people ask
How many large pizzas do I need for 15 people?
7 large pizzas for 15 grown-ups with normal appetites. That’s 56 slices, about 3 each plus spares. If they’re nibblers, 5 will do; if they’re starving, get 9.
How many slices of pizza per person?
Plan on 3 slices for a grown-up, 2 for a light eater or 2 for a kid, and 4 for a hungry crowd. Those are the numbers our calculator uses, before the 10% extra.
How many pizzas for 15 kids?
5 large pizzas for 15 kids under 12, at 2 slices each plus a little extra. Add the grown-ups in the calculator if they’re eating too.
How much does pizza for 15 people cost?
Multiply 7 by what a large pizza costs where you’re ordering. Switch the calculator to Office lunch and type in the price to see the order total and the cost per person.