Kids shoe size 2.5 in UK, EU and cm
A kids US 2.5 shoe is a UK 1.5 and an EU 18, a foot length of 10.5 cm, which fits most children around 6 to 9 months.
Kids 2.5 in every system
| US | UK | EU | Foot (cm) | Age |
|---|---|---|---|---|
| 2.5 | 1.5 | 18 | 10.5 | 6 to 9 months |
Sizes near kids 2.5
| US | UK | EU | Foot (cm) | Age |
|---|---|---|---|---|
| 1.5 | 1 | 17 | 9.5 | 3 to 6 months |
| 2 | 1.5 | 17 | 10.2 | 3 to 6 months |
| 2.5 | 1.5 | 18 | 10.5 | 6 to 9 months |
| 3 | 2 | 18.5 | 11 | 6 to 9 months |
| 3.5 | 2.5 | 19 | 11.4 | 9 to 12 months |
The age column is indicative only. Two children of the same age can be several sizes apart, so measure the longer foot and buy to that length plus about half a centimetre.
What size 2.5 actually means
Kids US 2.5 is a baby size built for a 10.5 cm foot. The UK number for the same length is 1.5 and the EU number is 18. Those three labels describe one shoe, they just count differently: the UK and US children's scales run in thirds of an inch from a different starting point, and the EU scale runs in Paris points, two thirds of a centimetre per size. Foot length is the part that does not move, which is why it is the column worth trusting when a brand's own chart disagrees.
Children in this range grow fast, often a full size in three to four months, so this size is a snapshot rather than a setting. Check the fit by pressing your thumb across the front of the shoe with the child standing: there should be roughly a thumb's width of space in front of the longest toe, and the heel should not slip when they walk.
For the whole range in one table see the baby shoe size chart, or the full kids shoe size chart by age. To measure at home, see how to measure shoe size. Once a child moves past the youth range, the adult shoe size chart takes over at the same foot lengths.
Common questions
What is kids US 2.5 in UK and EU sizes?
A kids US 2.5 shoe is a UK 1.5 and an EU 18, a foot length of 10.5 cm, which fits most children around 6 to 9 months.
How many cm is a kids 2.5?
10.5 cm of foot length. Buy with about half a centimetre of growing room on top of that, so a child measuring 10.5 cm today is comfortable in this size for the next couple of months rather than out of it immediately.
What age is a kids shoe size 2.5?
Roughly 6 to 9 months, but age bands are only a guide. Children of the same age can be two or three sizes apart, so measure the foot rather than buying by age. This size is built for a 10.5 cm foot.
How often should I re-measure?
Every two to three months for children under four, and every three to four months after that. Feet grow in bursts rather than steadily, so a size that fits well can become too short in a few weeks.
Last reviewed and updated on July 25, 2026. Conversion tables are checked against published international sizing standards.