| The length is followed by designators for girth A, B, C, D, E, EE, EEE, EEEE, F, G , which are specified in an indexed table as foot circumference in millimetres for each given foot length; foot width is also included as supplemental information | This measure is the easiest one for the manufacturer to use, because it identifies only the tool used to produce the shoe |
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| Some systems also indicate the shoe width, sometimes also as a number, but in many cases by one or more letters | Standard foot lengths are defined with interval steps of 5 mm for casual footwear and steps of 7 |
The shoe size is directly proportional to the length of the foot in the chosen unit of measurement.
| 8 12 13 312 324 305 | There are several US systems, which differ substantially for sizes far above or below medium sizes |
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| The Continental European system is used in , , , , , , , the , , , , , , , and most other continental European countries | K4 to K9 are sizes, K10 to K13 are and 1 to 7 are sizes |
ISO 9407:2019, "Shoe sizes—Mondopoint system of sizing and marking", is the current version of the standard.
17| Soviet Union Russia, Commonwealth of Independent States [ ] Historically the used the European Paris point system, but the Mondopoint metric system was introduced in the 1980s by GOST 24382-80 "Sizes of Sport Shoes" and GOST 11373-88 "Shoe Sizes", and lately by GOST R 58149-2018 | It contains three conversion tables for adults and children which feature major shoe sizing systems e |
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| Width [ ] Some systems also include the width of a foot or the girth of a shoe last , but do so in a variety of ways:• 6 9 4 236 248 230 | 5 33 33 34 35 35 36 36 37 38 39 40 41 42 43 44 46 3 3 |
, , stating "Shoe sizes on product details pages are in US shoe size"; accessed 16 January 2017• The Mondopoint system is based on average foot length and foot width for which the shoe is suitable, measured in millimetres.
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