The diameter of a 9-inch pizza is 2.54*9=22.86 cm. Inches here means inches. 1 inch=2.54 cm, 6 inches is 6*2.54=15.24 cm, 9 inches is 9*2.54=22.86 cm, 12 inches=30.48 cm, 14 inches=35.56 cm.

In addition, 9-inch pizzas are recommended for 1-2 people, 12-inch pizzas are recommended for 2-3 people, and 14-inch and above pizzas are recommended for 3-4 people.

Extended information:

To distinguish whether a pizza is authentic or not depends on how the bottom of the pizza is shaped. The industry-recognized distinction standards are as follows. If it is Italian pizza The pie must be a hand-thrown pizza. The bottom of the pie is formed by hand-throwing and does not require mechanical processing. The bottom of the finished pie is a perfect circle, the bottom of the pie is flat, and the "flange" is even, with a height of 2-3cm and a width of 2-3cm. 2cm.

If it is an American-style pizza, it must be an iron plate pizza. The bottom of the pizza is formed by mechanical processing. The bottom of the finished pizza is a perfect circle, the bottom of the pizza is flat, the "edge" is even, and the "edge" is even. "4-5cm high and 3cm wide. Other methods of forming the cake base can be regarded as unauthentic practices, which will cause the finished product to have a poor appearance and taste.

Baidu Encyclopedia-Pizza