Pizza Size Calculator

For a full meal: 38–50 square inches per adult is typical. For pizza with side dishes and appetizers: 25–35 sq in per person. For hungry teenagers and parties: 50–65 sq in per person. For children under 10: plan half adult portions (20–25 sq in per child).

Domino's: small 10 in (6 slices), medium 12 in (8 slices), large 14 in (8 slices), XL 16 in (8 slices). Pizza Hut: personal 6 in (4 slices), small 9 in (6 slices), medium 12 in (8 slices), large 14 in (8 slices). Papa John's: small 10 in (6 slices), medium 12 in (8 slices), large 14 in (8 slices), XL 16 in (8 slices).

For rectangular pizzas (Sicilian or sheet pan style), area = length × width. A standard half-sheet pan pizza (13 × 18 inches) has 234 square inches — comparable to an 17-inch round pizza. Slice count varies by how the rectangle is cut. The principle of larger = more value per dollar still applies.

This is personal preference. Deep dish (Chicago style) has a thick crust with high topping ratio. New York style is thin with wide slices and minimal outer crust. Neapolitan uses a thin center with a charred puffy outer crust. Wood-fired pizzas often have an uneven crust that some prefer. The crust is typically 20–30% of the pizza's volume in NY style.

Pizza shrinks during baking as moisture evaporates and the dough sets. A 14-inch raw pizza typically becomes a 13–13.5 inch baked pizza. High-heat cooking (wood fire, pizza steel at 550°F+) produces faster baking with less moisture loss. Size advertised by pizzerias typically refers to the pre-bake diameter.

Skillet method: heat a dry cast iron or nonstick skillet over medium heat, place pizza slice in cold, heat 2–3 minutes until bottom is crispy, add 1 tsp water beside the pizza, cover with a lid for 1 minute to melt cheese via steam. Results rival fresh pizza. Oven method: 375°F for 8–10 minutes on a baking sheet. Microwave makes crust soggy and is not recommended.

For a pizza party as the main food: one 14-inch (8-slice) pizza per 2–3 adults. For 10 adults: order 4 large pizzas. Add one extra pizza per group of 8–10 if serving people with big appetites or as the only food. For children, count 4 children as 2 adults for pizza ordering purposes.

The 14-inch large pizza is the most commonly sold size at major chains, accounting for over 40% of total pizza orders. The 12-inch medium is second. The XL 16-inch has grown in popularity, particularly for delivery orders where per-square-inch value is highest.

Thin-crust and deep-dish pizzas have dramatically different volumes despite identical diameters. A deep-dish pizza with 1-inch crust has roughly 4× the dough volume of an ultra-thin Neapolitan at the same diameter. Price-per-square-inch comparisons are most useful for comparing pizzas of similar style and thickness within the same pizzeria.