Pizza Size Calculator

To calculate the size (surface area) of a circular pizza, measure its diameter in inches, divide by 2 to get the radius (r), and apply the circle area formula: Area = π × r² (or Area = 3.14159 × (Diameter / 2)²). For example, a 14-inch pizza has a radius of 7 inches, giving a surface area of 153.94 square inches.

Standard pizzeria conventions define a Medium pizza as 12 inches (113 sq in) and a Large pizza as 14 to 16 inches (154 to 201 sq in). A 16-inch pizza yields almost 78% more pizza than a 12-inch pizza!

A 7-inch pizza is a personal-sized pie yielding 38.48 square inches of total area. It is typically cut into 4 small slices and is designed to feed 1 person for a light meal.

A 4-inch pizza is a mini or bite-sized snack yielding 12.57 square inches of total surface area. It is roughly the size of a standard bagel or English muffin pizza.

To check pizza size accurately: (1) Use a ruler or measuring tape to measure straight across the center of the pie from outer crust edge to outer crust edge. (2) Note the diameter in inches. (3) Enter the diameter into the CalculatorsDaily Pizza Area Calculator to find total square inches and cost per square inch.

A 250-gram (250g) dough ball yields a traditional 10-inch to 12-inch Neapolitan thin-crust pizza (approx. 78 to 113 square inches of surface area), serving 1 to 2 people.