EU 28 lands near age four or five, where a large Austrian study of 858 children found 69 percent were wearing street shoes too short for their feet.
EU to UK conversion
EU to UK kids' sizes drift apart from about 17 numbers, then the UK column resets to 1 near a 220 mm foot, so EU 35.5 is UK 1 while EU 35 just below is UK 13.5. The reset makes the UK number briefly plunge even as the EU number and the foot both climb. A parent reading a UK size off an EU one has to know which side of that reset the child sits, or the shoe comes a whole cycle wrong.
At this size, EU to UK
One size up from EU 28, UK moves 0.5 to UK 9.5 while EU rises 0.5 to EU 28.5, holding their spacing. Both EU 28 and UK 9 are whole numbers here, so nothing rounds. For EU 28, the UK column here runs UK 8.5, UK 9, UK 9.5, stepping a half size at a time.
Size Chart EU US UK CM 25 8.5 7.5 15.5 26 9 8 16 27 9.5 8.5 16.5 28 10 9 17 28.5 10.5 9.5 17.5 29 11 10 18 30 11.5 10.5 18.5
Frequently Asked Questions Does EU 28 round up or down in UK? The finding argues for rounding up and checking fit often: a foot at this stage adds about 1 mm a month, so today's perfect length is next season's pinch.
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Note Kids sizes transition to adult sizes around EU 38 / US 5 Children's feet grow rapidly - remeasure every 3-4 months Allow 10-15mm growing room when fitting Shoe sizes can vary by brand and style See a number that looks off? Report an error on this page.