International Shoe Size Chart and ISO Standards : eBay Guides

Buying the right size shoes on ebay could be difficult as the manufacturers do not follow the international standards. Countries have different measure systems,the English system is thirds of an inch, starting roughly at four or eight inches for children or adults. Four and eight inches used to be called one hand or two hands, with four inches being width of a hand and an inch the length between the end of your thumb and the middle crease. A hand or hand-width was the common measure for horses, and works well for foot measures as one hand is about the length of a baby's foot, to start the childrens' size scale, and two hands is about the length of a small adult foot, to start the adult size scale. Thirds of an inch used to be called barley corns, after the corns you can make beer out of that are about a third of an inch long.

This chart is based on library & web research, as well as some thought about the internal logic of the systems

Japanese        20        21        22        23        24        25        26         27        28         29        30        31        32
European        36        37        38        39        40        41        42          43       44         45        46        47        48        49
UK                   3          4          5          6        6,5         7          8           9        9,5        10        11        12        13        14                                    
USA                 3          4          5          6          7         7,5        8           9        10         11        12        13        14        15

The Mondopoint size table based on the ISO 9407:1991 Standards that has been set up in 1991
Mondopoint is a universal and standardised size system that takes the anatomic shape of the foot as a starting point.
Below is an overview of MondoPoint sizes and the corresponding European and American sizes.

Monopoid        225      232      240       247      255      262      270       277      285       292      300       307      315      322
French sizes     36        37        38        39        40         41        42        43       44         45        46        47        48        49
UK                     3          4          5          6        6,5         7          8          9        9,5        10        11        12        13        14
USA female       5          6          7         7,5        8          9         10                                        
USA male          3          4          5          6          7         7,5        8          9        10         11        12        13        14        15

You can compare the size to the japanese mesure system as this is constant or the european as it's mostly accurate .
Make the size confirmed by the seller. If the shoes are uk10 then these should be uk10/us/11/eu45/jp29(also jp290)
Ask the seller to send you all the sizes shown on the shoes and/or box/packaging.
This step is highly recommended if you'd like to avoid unnecessary returns and arguements who should pay the postage.

Thanks for reading and good luck for your next shopping!