Pizza sizes
A large pizza is usually 14 inches across and cut into 8 slices. A medium is about 12 inches, also 8 slices; a small is 8 to 10 inches with 6; and an extra-large is about 16 inches.
Pizzerias size and cut their pies differently, so the sources below don’t all agree. Where they don’t, we say so.
Pizza sizes in inches
| Size | Across | Slices | Grown-ups fed |
|---|---|---|---|
| Small | 8 to 10″USDA: 8 to 10″ | 6 | 2 |
| Medium | 12″USDA: 11 to 12″ | 8 | 2 to 3 |
| Large | 14″USDA: 13 to 15″ | 8 | 2 to 3 |
| Extra-large | 16″USDA: 16 to 18″ | 12 | 4 |
Across: the diameter most sources give, with the range USDA FoodData Central’s food survey uses for that size. Slices are how our calculator counts them, and “grown-ups fed” counts 3 slices each, the rule of thumb The Kitchn and Food Republic give too. Your pizzeria may cut differently.
Now work out how many to order
Pick any size in the pizza calculator and it counts the pizzas for your headcount, kids and appetites included.
How many slices by inch
| Across | Slices, as sources state them | Pizza | vs. 14″ |
|---|---|---|---|
| 10″ | 6 (Pizza Today)about 6 (Food Republic, for a small of 8 to 10 inches) | 79 sq in | 51% |
| 12″ | 8 (Taste of Home)8 (Pizza Today)about 8 (Food Republic) | 113 sq in | 73% |
| 14″ | 8 (Taste of Home)about 10 (Food Republic)8 (Pizza Hut’s large) | 154 sq in | 100% |
| 16″ | about 12 (Food Republic)12 (WebstaurantStore, for its 16- to 18-inch large)6 (Pizza Hut’s Big New Yorker)10 (Papa John’s extra-large) | 201 sq in | 131% |
| 18″ | 12 (WebstaurantStore, for its 16- to 18-inch large)8 (Pizza Today, for a New York pie of 18 to 20 inches) | 254 sq in | 165% |
“Pizza” is the area of a round pie that size, worked out from the diameter. A 16-inch pizza is 14% wider than a 14-inch one but has 31% more pizza, because area grows with the square of the diameter. More slices don’t mean more pizza: the same pie cut into 12 pieces is just smaller pieces.
How big is a large pizza?
Usually 14 inches across. Taste of Home calls a 14-inch circle the standard large and Food Republic says the same, and Pizza Hut’s large is 14 inches on its own website. USDA’s food survey files a large pizza as 13 to 15 inches. Not everyone agrees: The Kitchn says a large is sometimes 14 inches and other times 18, and WebstaurantStore, which sells pizza boxes to restaurants, sizes its large box at 16 to 18 inches. Papa John’s doesn’t give a diameter for its large at all. If the inches matter, ask the pizzeria.
How many slices in a medium pizza?
Usually 8. Taste of Home and Food Republic both give 8 slices for a 12-inch medium, Pizza Today says most food trucks cut their 12-inch pizzas into 8, and Papa John’s cuts its medium into 8. That’s the same count as a large, so a medium has smaller slices, not fewer. We count 8 in the calculator too. The one outlier is WebstaurantStore’s medium box, 12 to 14 inches, which it says holds 8 to 10.
How many people does a 16-inch pizza feed?
About 3 to 4 grown-ups. By area, a 16-inch pizza is 31% more than a 14-inch large, which Taste of Home says serves 2 to 3; that works out to 3 to 4. Our calculator counts 12 slices in an extra-large and 3 for a grown-up, which feeds 4. For a crowd, the pizza calculator does the counting: pick XL and put in your headcount.
Is one large pizza more than two mediums?
No. A 14-inch large is about 154 square inches of pizza, and two 12-inch mediums are about 226, which is 47% more. Even a 16-inch extra-large (201 square inches) is less than two mediums. So when a deal offers two mediums for about the price of one large, the two mediums are more pizza.
What each source says
| Source | Small | Medium | Large | XL |
|---|---|---|---|---|
| USDA FoodData Centraldiameters only | 8 to 10″ | 11 to 12″ | 13 to 15″ | 16 to 18″ |
| Taste of Home | not given | 12″8 slices | 14″8 slices | not given |
| Food Republic | 8 to 10″about 6 slices | 12″about 8 slices | 14″about 10 slices | 16″about 12 slices |
| WebstaurantStorebox sizes | 9 to 10″4 to 6 slices | 12 to 14″8 to 10 slices | 16 to 18″12 slices | 20″ or more14 to 16 slices |
| Pizza Hutown website | not given | 12″ | 14″8 slices | 16″ |
| Papa John’sown website | size not given6 slices | size not given8 slices | size not given8 slices | 16″10 slices |
“Not given” means the source doesn’t state that size; “size not given” means it states the slices but not the inches.
Questions people ask
How many slices in a 12-inch pizza?
Usually 8: Taste of Home, Pizza Today and Food Republic all say so. A 12-inch pizza is a medium at most pizzerias, and it serves about 2 people, by Taste of Home’s count.
How many slices in a 14-inch pizza?
Usually 8, the way Taste of Home and Pizza Hut cut it; Food Republic says about 10. A 14-inch pizza is a standard large.
How many slices in a 16-inch pizza?
Anywhere from 6 to 12, depending on the cut: Food Republic says about 12, Pizza Hut cuts its 16-inch Big New Yorker into 6 and Papa John’s cuts its 16-inch extra-large into 10. It’s the same amount of pizza whichever way it’s cut; we count 12 in an extra-large.
How many inches is an extra-large pizza?
Usually 16: Pizza Hut and Papa John’s both make theirs 16 inches on their own websites, and Food Republic says the same. USDA puts an extra-large at 16 to 18 inches, and WebstaurantStore’s extra-large box is 20 inches or more.
How big is a personal pizza?
USDA FoodData Central puts a personal pizza at 5 to 7 inches, WebstaurantStore’s personal box is 6 to 8, and Pizza Hut’s Personal Pan Pizza is 6 inches on its own website. It’s one person’s pizza, as the name says.
How many slices in a small pizza?
Usually 6. Papa John’s cuts its small into 6, Food Republic says about 6 for a small of 8 to 10 inches, and Pizza Today says 10-inch pizzas are cut into 6. We count 6 too.
Sources, checked October 18, 2026: USDA FoodData Central (FNDDS), restaurant cheese pizza (October 2024); Taste of Home, “2 Medium Pizzas vs. 1 Large Pizza” (March 2024); Food Republic, “How Many Slices Are In A 12-Inch Pizza?” (August 2024); Pizza Today, on food-truck pizza sizes (August 2025); Pizza Today, on New York slices (December 2017); WebstaurantStore, “Pizza Box Sizing Guide” (October 2026); The Kitchn, “The Right Amount of Pizza to Order for a Party” (March 2017). Chain sizes are from each chain’s own website: Pizza Hut and Papa John’s, checked September 28, 2026. EnoughPizza isn’t affiliated with any of them. Areas are worked out from the diameters. For how many slices a large has and how many people it feeds, see how many slices in a large pizza; for a headcount, try pizzas for 12 people or pizzas for 20.