Kids Size Chart
Clothing by age and height, youth letter sizes for older kids, plus quick links to kids shoes, infant footwear, and diapers.
How to choose a kids size
- Measure height (and weight for babies) rather than relying on age alone.
- Match the closest row on the clothing table below.
- For shoes, measure foot length in cm and use the kids shoe size converter.
Kids clothing size chart by age
International baby and kids labels with height (cm), weight (kg), and chest (cm).
| US | UK | EU | JP | Height (cm) | Weight (kg) | Chest (cm) |
|---|---|---|---|---|---|---|
| 0-3m | 0-3m | 62 | 60 | 62 | 5 | 43 |
| 3-6m | 3-6m | 68 | 70 | 68 | 8 | 46 |
| 6-9m | 6-9m | 74 | 75 | 74 | 9 | 47 |
| 9-12m | 9-12m | 80 | 80 | 80 | 10 | 48 |
| 2T | 18-24m | 92 | 90 | 86 | 12 | 52 |
| 3T | 2-3y | 98 | 95 | 95 | 14 | 54 |
| 4T | 3-4y | 104 | 100 | 102 | 16 | 56 |
| 5 | 4-5y | 110 | 110 | 110 | 18 | 58 |
| 6 | 5-6y | 116 | 115 | 115 | 20 | 59 |
| 7 | 6-7y | 122 | 120 | 120 | 23 | 61 |
Youth size chart (XS–XL)
Nike Children boys letter sizes (youth medium, large, and more) with approximate age and height from Nike's published chart. Adult S/M/L are different—do not reuse adult letters.
| Youth | Age (approx.) | Height (cm) | Chest (cm) |
|---|---|---|---|
| XS | 7-8 | 122–128 | 64.5–66 |
| S | 8-10 | 128–137 | 66–69 |
| M | 10-12 | 137–147 | 69–75 |
| L | 12-13 | 147–158 | 75–81.5 |
| XL | 13-15 | 158–170 | 81.5–88.5 |
Kids & infant shoe size charts
Diapers & baby sizing
Frequently asked questions
How do I read a kids size chart?
Start with height and weight (or age as a rough guide), then match the label on the chart. Brands differ, so confirm with the product size chart when shopping.
What is a youth size chart?
Youth sizes usually use letter labels like XS, S, M, L, and XL for older kids and teens. They are not the same as adult letter sizes—use height and chest, not an adult M or L.
Where is the infant or toddler shoe size chart?
Use our toddler shoe size chart by age and the kids shoe size converter for infant, toddler, and youth footwear. Measure foot length in cm for the best match.