At EU 25 a fitted shoe should still leave 12 to 17 mm in front of the toes, the range Austrian researchers set because a foot this age outgrows a 12 mm margin in about a month.
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 25, UK moves 0.5 to UK 8 while EU rises 1 to EU 26, so the two scales spread wider. EU 25 is whole but UK 7.5 carries a half, so a rack of full sizes only rounds to the nearest. For EU 25, the UK column here runs UK 7, UK 7.5, UK 8, stepping a half size at a time.
Size Chart EU US UK CM 24 8 7 15 25 8.5 7.5 15.5 26 9 8 16 27 9.5 8.5 16.5 28 10 9 17
Frequently Asked Questions Does EU 25 round up or down in UK? Round up rather than down: a growing foot closes a larger gap fast, while a short shoe forces the toes to curl. The plus12 gauge adds the first 12 mm for you.
ℹ️
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.