`  I have used the conversion chart for both adult and children's shoe sizes and found it is superb for comparing the true UK and EU sizes. This means I have bough shoes with just EU sizes blind on many occasions and got the right size. However, the foot size which goes along with this scale seems way out. Both my wife and I measure about 260mm on that scale, but need sizes indicated for 275-280mm feet (9/43). I understand that shoes need to be bigger than the feet they are intended for, but the chart implies that absolute feet measurements translate into sizes directly. If people measure their feet and followed this conversion chart they would buy shoes that were too small. This is explained partially in the article, albeit for children's feet: ``Example: A child's foot that is 185 millimetres (7.3 in) long requires a shoe that is about 15 millimetres (0.59 in) longer. The inner length of 200 millimetres (7.9 in) is EU shoe size 29 or UK size 11.`` But surely it would be better to change the comparative scale to allow for this and explain that.`