Shoe size, also known as shoe size, is a standard unit system, which is used to measure the shape of people's feet in order to match shoes.
The shoe sizes adopted by countries all over the world are not consistent, generally including length and width. Length refers to the length of the wearer's foot or the length of the manufacturer's shoe last. Even in the same country/region, different people and shoes with different uses, such as children and sports shoes, have different definitions of shoe sizes.
Extended data:
Chinese mainland's old code and European code (French code, EU code) are essentially different and cannot be confused or used interchangeably. China and Hongkong have always followed the European size system, taking the European code as the standard unit. Japan and Chinese mainland have the same new shoe size, using the standard Mondo 5 mm decimal system.
The shoe sizes in various places are: English size, American size, Japanese size, etc.
Europe
The shoe sizes of France, Germany and other continental European countries are generally calculated as follows, in centimeters:
Shoe size = 1.5* last length = 1.5* (foot length +2)
However, due to the different characteristics of shoe last, the specific size may be slightly different.
North America
Shoe sizes in the United States and Canada measure the length of last in inches:
Men's shoe size = 3* last length -22
Women's shoe size (normal) = 3* last length -20.5
In addition, there is a relatively rare size of women's shoes, which was put forward by the American Footwear Association:
FIA = 3 * final length -2 1
The shoe size of boys and girls is the calculation method of men's shoe size+12.33.
References:
Baidu encyclopedia-shoe size