| An indication in centimetres or inches can mean the length of the foot or the length of the shoe's inner cavity | For example, a women's shoe at size 8 is a different length from a men's shoe at size 8 in the US system, but not the British |
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| 75 86 S 8 32 81 24 | A shoe size is an indication of the fitting size of a for a person |
German Standard 66074:1975, Shoe sizes• This also results in different increments between shoe sizes, because usually only "full" or "half" sizes are made.
5| 0 in and width of 110 millimetres 4 | 5 30 14 13 49 |
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| 5 36 22 22 5 | 5 40 8 6 40 |
Foot length and girth foot circumference are taken into account.
| For example, the inner cavity of a shoe must typically be 15 mm longer than the foot, and the shoe last would be 2 size points larger than the foot, but this varies between different types of shoes and the shoe size system used | 5 12 13 14 15 |
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| 47 mm are used, then resulting lengths are rounded up to 0 | ISO 9407:2019, "Shoe sizes—Mondopoint system of sizing and marking", is the current version of the standard |