Baby, Toddler & Kids Shoe Size Chart (by Foot Length & Age)
Measure your child’s foot, then read the size — don’t guess by age. US kids’ shoe sizes are based on foot length, so the reliable way to size baby, toddler and kids shoes is to measure the foot in centimetres (or inches) and match it below. This chart reconciles the published foot-length charts of six sources (See Kai Run, Carter’s/OshKosh, Clarks, pediped, Nike and the US barleycorn standard) so the numbers agree. For fit only — we compare published charts and make no medical or foot-health claims.
Baby shoe size from cm: quick lookup (US, EU, UK)
How to read this chart: measure the bare foot in cm, find the range that covers it and read across. Each range ends at the longest foot that size fits; a longer foot takes the next size up. EU and UK are typical equivalents and vary by about half to one size between brands.
| Foot | US | EU | UK | Size fits |
|---|---|---|---|---|
| 9 cm | 1.5C | 17 | 1 | 8.8–9.2 cm |
| 10 cm | 2.5C | 18 | 2 | 9.6–10 cm |
| 10.5 cm | 3C | 18.5 | 2.5 | 10–10.5 cm |
| 11 cm | 4C | 19.5 | 3.5 | 10.9–11.3 cm |
| 12 cm | 5C | 21 | 4.5 | 11.7–12.1 cm |
| 13 cm | 6C | 22 | 5.5 | 12.6–13 cm |
| 14 cm | 7.5C | 24 | 7 | 13.8–14.3 cm |
| 16 cm | 9.5C | 26.5 | 9 | 15.5–16 cm |
| 20 cm | 1.5Y | 33 | 1 | 19.8–20.2 cm |
Foot length (cm or inches) to US, EU and UK shoe size converter
Measure the longer foot, heel to longest toe, standing. Enter it here.
Tip: enter the bare foot length. Each size’s range already ends at the maximum foot length that size fits, so don’t add extra room.
Baby & toddler shoe size by age (quick guide)
Rough orientation only — children’s feet vary a lot at the same age, so measure whenever you can.
| Age | Typical US size | Foot length | EU |
|---|---|---|---|
| 0-3 months | US 1C | 8.3–8.8 cm | EU 16 |
| 3-6 months | US 2C | 9.2–9.6 cm | EU 17 |
| 6-9 months | US 3C | 10–10.5 cm | EU 18.5 |
| 9-12 months | US 4C | 10.9–11.3 cm | EU 19.5 |
| 12-18 months | US 5C | 11.7–12.1 cm | EU 21 |
| 18-24 months | US 6.5C | 13–13.4 cm | EU 22.5 |
| 2 years | US 7C | 13.4–13.8 cm | EU 23.5 |
| 3 years | US 9.5C | 15.5–16 cm | EU 26.5 |
| 4 years | US 11.5C | 17.2–17.6 cm | EU 28.5 |
| 5 years | US 13C | 18.5–18.9 cm | EU 31 |
Infant shoe sizes 1, 1.5, 2, 3 and 4 in cm (US and UK)
US 1C fits 8.3–8.8 cm, 1.5C 8.8–9.2 cm, 2C 9.2–9.6 cm, 3C 10–10.5 cm and 4C 10.9–11.3 cm. UK infant sizes sit half a size below the US number (US 1C = UK 0.5, US 1.5C = UK 1). UK numbering restarts after 13.5, so a UK 1 is 8.8–9.2 cm (infant) or 19.8–20.2 cm (junior). Y means youth, not years: 1.5Y fits 19.8–20.2 cm, 2.5Y 20.6–21 cm, 3.5Y 21.5–21.9 cm.
Full baby, toddler & kids shoe size chart (US / EU / UK / cm)
| US size | Foot (cm) | Foot (in) | EU | UK | Approx age |
|---|---|---|---|---|---|
| 0C | 7.5–7.9 | 2.95–3.12 | 16 | - | 0-6 weeks |
| 0.5C | 7.9–8.3 | 3.12–3.28 | 16 | 0 | newborn |
| 1C | 8.3–8.8 | 3.28–3.45 | 16 | 0.5 | 0-3 months |
| 1.5C | 8.8–9.2 | 3.45–3.62 | 17 | 1 | 2-4 months |
| 2C | 9.2–9.6 | 3.62–3.78 | 17 | 1.5 | 3-6 months |
| 2.5C | 9.6–10 | 3.78–3.95 | 18 | 2 | 5-8 months |
| 3C | 10–10.5 | 3.95–4.12 | 18.5 | 2.5 | 6-9 months |
| 3.5C | 10.5–10.9 | 4.12–4.28 | 19 | 3 | 8-11 months |
| 4C | 10.9–11.3 | 4.28–4.45 | 19.5 | 3.5 | 9-12 months |
| 4.5C | 11.3–11.7 | 4.45–4.62 | 20 | 4 | 11-14 months |
| 5C | 11.7–12.1 | 4.62–4.78 | 21 | 4.5 | 12-16 months |
| 5.5C | 12.1–12.6 | 4.78–4.95 | 21.5 | 5 | 14-18 months |
| 6C | 12.6–13 | 4.95–5.12 | 22 | 5.5 | 16-20 months |
| 6.5C | 13–13.4 | 5.12–5.28 | 22.5 | 6 | 18-24 months |
| 7C | 13.4–13.8 | 5.28–5.45 | 23.5 | 6.5 | ~2 years |
| 7.5C | 13.8–14.3 | 5.45–5.62 | 24 | 7 | 2-2.5 years |
| 8C | 14.3–14.7 | 5.62–5.78 | 24.5 | 7.5 | 2-2.5 years |
| 8.5C | 14.7–15.1 | 5.78–5.95 | 25.5 | 8 | 2.5-3 years |
| 9C | 15.1–15.5 | 5.95–6.12 | 26 | 8.5 | 2.5-3 years |
| 9.5C | 15.5–16 | 6.12–6.28 | 26.5 | 9 | ~3 years |
| 10C | 16–16.4 | 6.28–6.45 | 27 | 9.5 | 3-3.5 years |
| 10.5C | 16.4–16.8 | 6.45–6.62 | 27.5 | 10 | ~3.5 years |
| 11C | 16.8–17.2 | 6.62–6.78 | 28 | 10.5 | 3.5-4 years |
| 11.5C | 17.2–17.6 | 6.78–6.95 | 28.5 | 11 | ~4 years |
| 12C | 17.7–18.1 | 6.95–7.12 | 29.5 | 11.5 | 4-4.5 years |
| 12.5C | 18.1–18.5 | 7.12–7.28 | 30 | 12 | ~4.5 years |
| 13C | 18.5–18.9 | 7.28–7.45 | 31 | 12.5 | 4.5-5 years |
| 13.5C | 18.9–19.3 | 7.45–7.62 | 31.5 | 13 | ~5 years |
| 1Y | 19.3–19.8 | 7.62–7.78 | 32 | 13.5 | 5-6 years |
| 1.5Y | 19.8–20.2 | 7.78–7.95 | 33 | 1 | 5.5-6.5 years |
| 2Y | 20.2–20.6 | 7.95–8.12 | 33.5 | 1.5 | 6-7 years |
| 2.5Y | 20.6–21 | 8.12–8.28 | 34 | 2 | 6.5-7.5 years |
| 3Y | 21–21.5 | 8.28–8.45 | 35 | 2.5 | 7-8 years |
| 3.5Y | 21.5–21.9 | 8.45–8.62 | 35.5 | 3 | 7.5-8.5 years |
| 4Y | 21.9–22.3 | 8.62–8.78 | 36.5 | 3.5 | 8-9 years |
| 4.5Y | 22.3–22.7 | 8.78–8.95 | 37 | 4 | 8.5-9.5 years |
| 5Y | 22.7–23.2 | 8.95–9.12 | 38 | 4.5 | 9-10 years |
| 5.5Y | 23.2–23.6 | 9.12–9.28 | 38.5 | 5 | 9.5-10.5 years |
| 6Y | 23.6–24 | 9.28–9.45 | 39 | 5.5 | 10-11 years |
| 6.5Y | 24–24.4 | 9.45–9.62 | 39.5 | 6 | 10.5-11.5 years |
| 7Y | 24.4–24.8 | 9.62–9.78 | 40 | 6.5 | 11-12 years |
How to read it: the cm / inch foot length is the reliable field — US sizes are length-based (one half-size ≈ 1/6 inch / 4.23 mm). EU and UK are typical equivalents that vary by roughly ±0.5–1 point between brands. “C” = child/little-kid, “Y” = youth/big-kid; the ladder runs 0C–13C then restarts at 1Y.
UK width fittings (F, G and H): our UK baby shoe size chart.
How to measure your child’s foot
- Put a sheet of paper against a wall. Stand your child on it, heel to the wall (measure standing — feet spread under weight).
- Mark the tip of the longest toe (not always the big toe).
- Measure heel-to-mark in centimetres. Do both feet and use the larger one.
- Measure late in the day (feet swell slightly). Match the length in the converter above.
A fuller walk-through, plus what C and Y sizes mean: our guide to measuring baby and toddler shoe size.
The honest caveats
- Age columns are rough and the least reliable field; feet vary a lot at the same age.
- UK numbering restarts after UK 13.5 (US 1Y = UK 13.5, US 1.5Y = UK 1).
- Feet grow quickly in the first years, so re-measure every couple of months.
How we built this chart
Built by reconciling foot-length-to-US-size charts from six published sources: five brand charts and the US barleycorn standard (See Kai Run, Carter's/OshKosh, Clarks, pediped, Nike, and the US-customary/barleycorn standard). US kids' sizing is LENGTH-based: one full size = one barleycorn = 1/3 inch (8.47 mm) and each half-size = 1/6 inch (4.23 mm). We anchored the ladder at US 4C = 11.30 cm foot length (the tight median of See Kai Run, Carter's and Clarks) and stepped it by exactly 4.23 mm per half-size, then verified every row against each published chart. Values are recommended MAX foot length per size (fit-with-room); Nike was found to run ~1 size large at the baby end and was treated as an outlier, not part of the numeric median.
Sources
- See Kai Run (baby/first-walker footwear specialist)
- Carter's / OshKosh B'gosh (kids' footwear size chart)
- Clarks (kids footwear, full conversion ladder)
- pediped (infant/toddler footwear specialist)
- Nike Kids' Footwear size chart
- US-customary / barleycorn shoe-size standard (Wikipedia 'Shoe size'; cross-checked SATRA & The Metric Maven)
Fit reference only. This page makes no medical, podiatric or developmental claims and does not assert that any size prevents or causes any foot condition. If you have concerns about your child’s feet, ask a pediatrician.
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