A 150 mm foot marks the small end of this range, a length most children reach around age three; Austrian tracking shows the foot still adding close to 1 mm a month at this stage.
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 24, UK moves 0.5 to UK 7.5 while EU rises 1 to EU 25, so the two scales spread wider. Both EU 24 and UK 7 are whole numbers here, so nothing rounds. For EU 24, 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
Frequently Asked Questions Does EU 24 round up or down in UK? With the foot still growing, round to the larger size: the extra millimetres become fit within weeks. Aim for 12 to 17 mm past the longest toe when the shoe is on.
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.