How Many Slices Are in a Pizza?

A 14 inch large pizza is usually cut into 8 slices, a 12 inch medium into 6 or 8, and a 16 inch extra-large into 10 or 12. The cut changes the size of each slice, but it never changes how much pizza you get, so plan your order around the amount of food.

Typical slice counts by size

Pizzerias set their own cutting standards, so the counts below are common patterns that your shop may not follow. The area column shows how big each slice is, and slice size matters more than the count.

Size	Diameter	Common slice counts	Area per slice
Small	10 inches	6	13 square inches
Medium	12 inches	6 or 8	19 or 14 square inches
Large	14 inches	8	19 square inches
Extra-large	16 inches	10 or 12	20 or 17 square inches

Chains publish some of these numbers in their nutrition information because calories are listed per slice. Papa Johns, for example, lists its large pizza at 8 slices per pizza and its extra-large at 10 slices per pizza. Domino's lists its large as a 14 inch pizza and its extra-large as a 16 inch pizza. If you need an exact count for a specific shop, ask when you order.

To see how area changes across sizes, read the pizza size guide.

Why the calculator counts 6, 8, and 10 slices

The pizza calculator assumes a medium has 6 slices, a large has 8, and an extra-large has 10. Those counts make every slice roughly the same size, at about 19 to 20 square inches, so "3 slices" means about the same amount of food whether you order mediums, larges, or extra-larges.

Your pizzeria may cut differently. Many shops cut a medium into 8 slices or an extra-large into 12. A different cut does not make the calculator's order wrong, because the amount of pizza stays the same. You will just end up with more, smaller slices in each box.

Keep counting in standard slices, even if your shop cuts more. Say you are feeding 20 average adults at 3 standard slices each, for a total of 60 slices. Redoing the math with the shop's higher count would leave you short:

• At the calculator's 10 slices per extra-large, you order 6 extra-large pizzas, which is about 1,206 square inches.
• If you divide 60 by 12 slices instead, you order only 5 extra-large pizzas, which is about 1,005 square inches.
• Sixty standard slices from 14 inch larges add up to about 1,155 square inches, so the 5 pizza order falls short while the 6 pizza order covers it.

Pie cut versus square cut

Pie cut is the familiar wedge. The cutter runs straight across the center of the pizza several times, and every slice is a triangle with crust on the wide end. All slices from one pie are about the same size, so counting slices is a reasonable way to divide the food.

Square cut, also called party cut or tavern cut, uses a grid of straight lines. It is traditional for tavern-style pizza, which is a thin, crisp pizza associated with Chicago and much of the Midwest. Sheet pizzas and rectangular pan pizzas are also cut into squares.

A square-cut round pizza usually has more pieces than the same pizza cut into wedges, and the pieces are not the same size. Center squares have no crust, while the pieces along the edge are small, curved, and mostly crust. Because the pieces vary so much, count a square-cut order by the number and size of pizzas instead of the number of pieces.

Small squares are easy to grab while standing and talking, so square cut suits appetizer tables and gatherings where guests graze for a couple of hours.

Asking for double-cut slices for kids

Many pizzerias will cut a pizza into twice the usual number of slices if you ask. A double-cut 14 inch large has 16 slices of about 10 square inches each instead of 8 slices of about 19 square inches.

Smaller slices are easier for small hands to hold, and they droop less. A child who only wants a little pizza can take one small slice instead of leaving half of a big one on the plate.

Double-cutting does not change how many pizzas you need. The calculator's Young kids setting plans for 2 standard slices per child, which equals about 4 slices from a double-cut large. For example, 12 young children at 2 slices each need 24 standard slices, which is 3 large pizzas. If you ask for those 3 larges to be double-cut, you get 48 small slices, or 4 per child.

Tell the shop about the double cut when you place the order. You can recut a pizza at home, but recutting is messy.

How slice count fits into your order math

The site's calculator uses a simple formula:

Pizzas = guests × slices per person ÷ slices per pizza, rounded up.

The appetite presets are 2 slices for young kids, 2.5 for light eaters, 3 for average adults, and 4 for a hungry crowd. Always round up to the next whole pizza, since running out is worse than having leftovers.

Here are a few worked examples using standard slice counts:

Group	Slices needed	Large pizzas (8 slices)	Extra-large pizzas (10 slices)
12 young kids at 2 slices	24	3	3
15 light eaters at 2.5 slices	37.5	5	4
20 average adults at 3 slices	60	8	6
10 hungry eaters at 4 slices	40	5	4

For a mixed group, add each group's slices together before you divide. Ten young kids need 20 slices, and 8 average adults need 24 slices, for a total of 44 slices. Dividing 44 by 8 gives 5.5, which rounds up to 6 large pizzas.

The cut style only changes what those pizzas look like on the table. Six larges cut into wedges, squares, or double-cut slices all hold the same amount of food. For more help with group sizes, see how many pizzas to order by group size, or enter your headcount in the calculator to get the number of pizzas directly.

Quick answers

• A 10 inch small pizza usually has 6 slices.
• A 12 inch medium usually has 6 or 8 slices.
• A 14 inch large usually has 8 slices.
• A 16 inch extra-large usually has 10 or 12 slices.
• A double-cut large has 16 smaller slices, but it holds the same amount of pizza as a regular large.
• A square-cut pizza has more pieces of uneven size, so plan by the number of pizzas instead of the number of pieces.

Sources

• Papa Johns, Nutritional Details, accessed September 12, 2026. The page lists nutrition per slice based on 8 slices per large pizza and 10 slices per extra-large pizza.
• Domino's Pizza, Domino's Nutrition Guide, January 2026. The guide lists Large (14") and Extra Large (16") pizzas.