Kids' shoe size chart by foot length: EU, UK, US
Measure the child's foot and look up the length. A foot of 15 cm takes about EU 25, UK child 7.5 or US child 8. The chart has no age column, because children of the same age have feet of different lengths.
Enter a measurement or a size to highlight the matching row of the chart.
| Foot length (cm) | Foot length (in) | EU | UK child | US child |
|---|---|---|---|---|
| 10.0 | 3.94 | 17 | 2 | 2 |
| 10.5 | 4.13 | 18 | 2.5 | 2.5 |
| 11.0 | 4.33 | 19 | 3 | 3 |
| 11.5 | 4.53 | 19 | 3.5 | 4 |
| 12.0 | 4.72 | 20 | 4 | 4.5 |
| 12.5 | 4.92 | 21 | 5 | 5 |
| 13.0 | 5.12 | 22 | 5.5 | 5.5 |
| 13.5 | 5.31 | 22 | 6 | 6 |
| 14.0 | 5.51 | 23 | 6.5 | 7 |
| 14.5 | 5.71 | 24 | 7 | 7.5 |
| 15.0 | 5.91 | 25 | 7.5 | 8 |
| 15.5 | 6.10 | 25 | 8.5 | 8.5 |
| 16.0 | 6.30 | 26 | 9 | 9 |
| 16.5 | 6.50 | 27 | 9.5 | 9.5 |
| 17.0 | 6.69 | 28 | 10 | 10.5 |
| 17.5 | 6.89 | 28 | 10.5 | 11 |
| 18.0 | 7.09 | 29 | 11.5 | 11.5 |
| 18.5 | 7.28 | 30 | 12 | 12 |
| 19.0 | 7.48 | 31 | 12.5 | 12.5 |
| 19.5 | 7.68 | 31 | 13 | 13.5 |
How to use the chart
- Measure both feet while the child is standing.
- Enter the longer length in the finder, in centimetres or inches. Do not add growing room.
- The finder highlights the first row that is long enough. Read the size in the system the shop uses.
- Compare with the size chart of the brand before you buy.
Without JavaScript the finder is unavailable, but the chart is complete: take the first row whose foot length is not shorter than the measured foot.
Room to grow is already included
The formulas add two sizes of room between the foot and the inside of the shoe: about 13 mm in EU sizes and about 17 mm in UK and US sizes. Foot health organisations recommend a similar space in front of the longest toe: the American Podiatric Medical Association names about 10 to 15 mm, the German shoe institute 9 to 15 mm depending on size.
That is why you enter the bare foot length. Adding a centimetre first would put the child in shoes that are too long.
How the sizes are derived
- EU size: foot length divided by 6.67 mm, plus 2, rounded to the whole size.
- UK child size: foot length divided by 8.47 mm, plus 2, minus 12, rounded to the half size.
- US child size: the UK value plus a quarter of a size, rounded to the half size. The US scale starts slightly below the UK scale.
Children's sizes in the UK and US systems run up to 13.5. After that the numbering starts again at 1 with the adult scale; for longer feet use the women's or men's chart.
Because EU steps are rounded to whole sizes, two neighbouring rows can show the same EU size.
Worked example
A child's longer foot measures 16.2 cm.
- The first row that is long enough is 16.5 cm.
- That row gives EU 27, UK child 9.5 and US child 9.5.
- Calculated directly for 16.2 cm, the EU size would be 162 divided by 6.67, plus 2, which is 26.3. The row for 16.5 cm is the next step up.
How often to measure
Children's feet grow in spurts. A National Health Service trust in England reports about two sizes a year on average in the first four years. The organisations listed in the sources recommend checking the fit every few months: every three to four months according to the German shoe institute, every four to six months according to the American Podiatric Medical Association.
Pressing on the toe cap with a thumb is not a reliable test for small children: they tend to curl their toes when the shoe is pressed.
Common mistakes
- Choosing by age. Two children of the same age can be several sizes apart.
- Measuring while the child sits. Measure standing, with weight on both feet.
- Adding growing room to the measurement. It is already included.
- Buying far ahead. Growth cannot be predicted, so a size bought for next season may not fit then.
- Trusting the printed size alone. Brands differ; compare foot length with the chart of the brand.
Sources and checks
The values in the chart are calculated from the definitions in the sources below. They are not copied from another chart. Last checked against the sources on September 28, 2026.
Sizes are calculated from foot length with the formulas of ISO/TS 19407:2015. UK and US sizes are rounded to the nearest half size and EU sizes to the nearest whole size.
The chart covers children's sizes only. They end at 13.5; after that the numbering restarts with the adult scale.
The US children's scale is placed a quarter of a size above the UK scale. This follows from the scale origins in ISO/TS 19407:2015 and agrees with the drawing of the Brannock junior scale; it is the least certain column of this chart.
The allowance between foot and shoe is part of the formulas. Do not add growing room to the foot length before you look it up. Brand charts differ; use the chart of the brand when you buy.
Used for: The formulas that give UK and EU sizes from foot length, the size steps of 8.47 mm and 6.67 mm, the allowance of two sizes between foot and last, and the usual offsets of US sizes from UK sizes.
Used for: The current edition of the conversion standard and its statement that its adult tables are a guideline. Its tables were not read.
Used for: US women's sizes lie one size above US men's sizes on the measuring device, and the position of the US children's scale. Read from the drawing, so approximate.
Used for: The barleycorn of one third of an inch, half sizes of one sixth of an inch, children's sizes that run to 13 before adult sizes restart at 1, and UK women's 5 being US women's 7.
Used for: Room of about 10 to 15 mm in front of the longest toe, checking the size every four to six months, and buying for the larger foot.
Used for: Room of 9 to 15 mm depending on size, measuring every three to four months while standing, and that the thumb test is not reliable for children.
Used for: Children's feet grow in spurts, on average about two sizes a year in the first four years.
Frequently asked questions
- What shoe size does a child with 15 cm feet need?
- By the formulas a foot of 15.0 cm takes EU 25, UK child 7.5 or US child 8. Check the chart of the brand, because children’s sizes vary between manufacturers.
- Why is there no age in this chart?
- Age is a poor guide to foot length. Children grow in spurts and at different rates, so the chart starts from the measured foot instead.
- How much room should a child have in a shoe?
- Foot health organisations name about 10 to 15 mm in front of the longest toe. The sizes in this chart already include room of that order.
- What comes after children's size 13?
- In the UK and US systems the numbers start again: after children's 13.5 comes size 1 of the adult scale. EU sizes simply continue.
- Is a US child size the same as a UK child size?
- Nearly. By the formulas the US value lies a quarter of a size above the UK value, so after rounding the two are equal or half a size apart. Brands may print a different relation; follow the brand.
Last updated: September 28, 2026