22.86 centimeters.

9 inch pizza means that the diameter of the pizza is 9 inches and 1 inch is equal to 2.54 centimeters, so to convert to how many centimeters, simply multiply the inch diameter by 2.54 to get a 9 inch pizza of 22.86 centimeters.

Also a 9-inch pizza, is recommended for 1-2 people, a 12-inch pizza, is recommended for 2-3 people, and a 14-inch and above inch pizza, is recommended for more than 3-4 people.

Eat pizza attention

Don't use white sauce instead of ketchup: white sauce is a new trend in pizza recently emerged, French white sauce, with a strong creamy flavor, loved by many girls, but sour ketchup is more nutritious, can be antioxidant.

Don't use double portions of cheese: Those who love cheese will not give up the delicious cheesecake pizza. Although cheese is a dairy product that helps replenish calcium, it is high in calories and fat, so it is good to eat it in moderation.

Eating two slices is a good idea: the average girl can eat two slices with soup or a drink and be at least 8 minutes full.

The above content reference? Baidu encyclopedia - pizza, people.com.cn - pizza is delicious not to eat too much eat pizza attention to 5 notes