Adidas kids sizing has two characteristics that set it apart. First, Adidas uses completely unisex sizing across all ages. Second, Adidas has a genuine gap between 116cm and 123cm where no size exists.
Find your child's Adidas Kids size
Enter your child's measurements and we'll show the right size — plus how long it will last.
Size recommendations are based on official brand size charts and are provided as a guide only. Fit may vary by item, style, and individual child. Outgrow is not responsible for sizing decisions made based on these recommendations.
Does Adidas Kids Run Big or Small?
At 112cm our reference child fits Adidas 5-6Y / 2XS with a waist of 56cm — approximately 2.5cm above their measurement. This makes Adidas the least generous of the three sportswear brands at this height, though still more generous than most fashion brands.
| Brand | Size | Waist (cm) | Hip (cm) | vs ref child |
|---|---|---|---|---|
| Under Armour | 6 | 57–60 | 62–65 | +3.5–6.5cm |
| Nike | 6 | 57–58.5 | 62–65 | +3.5–5cm |
| Adidas | 5-6Y / 2XS | 56 | 64 | +2.5cm waist, +5.5cm hip |
| Zara Kids | 111–116 | 55 | 62 | +1.5cm |
| H&M | 116 | 54 | 60 | +0.5cm |
| Old Navy | 6 | 53 | — | Average |
For the full methodology see our cross-brand sizing research. See also our complete kids clothing size chart comparing 36+ brands side by side.
The Missing 117–122cm Bracket
Adidas clothing sizes jump from 5-6Y / 2XS (111–116cm) to 7-8Y / XS (123–128cm). There is no Adidas size for children between 117cm and 122cm.
Fully Unisex Sizing
Adidas is the only major sportswear brand to use completely identical measurements for boys and girls across all ages. Nike diverges from XS onwards, Under Armour from YXS. Girls with wider hips relative to height may find Adidas bottoms fitting differently than brands with separate girls' measurements.
Adidas Kids Tops (Unisex)
| Size | Height (cm) | Chest (cm) |
|---|---|---|
| 0-3M | 51–56 | 38.5 |
| 3M | 57–62 | 43.0 |
| 6M | 63–68 | 45.5 |
| 9M | 69–74 | 47.0 |
| 12M | 75–80 | 49.5 |
| 18M | 81–86 | 51.0 |
| 2T | 87–92 | 52.5 |
| 3T | 93–98 | 54.5 |
| 4T | 99–104 | 56.0 |
| 5T | 105–110 | 58.0 |
| 5-6Y / 2XS | 111–116 | 60.5 |
| 7-8Y / XS | 123–128 | 64.0 |
| 9-10Y / S | 135–140 | 71.0 |
| 11-12Y / M | 147–152 | 78.0 |
| 13-14Y / L | 159–164 | 86.0 |
| 15-16Y / XL | 171–176 | 91.5 |
Boys and girls identical. No size covers 117\u2013122cm.
Adidas Kids Bottoms (Unisex)
Inseam data is published for all sizes — useful when buying trousers online.
| Size | Height (cm) | Waist (cm) | Hip (cm) | Inseam (cm) |
|---|---|---|---|---|
| 0-3M | 51–56 | 38.5 | 37.0 | 19.1 |
| 3M | 57–62 | 43.0 | 42.0 | 21.8 |
| 6M | 63–68 | 45.0 | 45.0 | 24.3 |
| 9M | 69–74 | 46.5 | 47.5 | 27.0 |
| 12M | 75–80 | 49.0 | 50.0 | 31.1 |
| 18M | 81–86 | 50.0 | 51.5 | 34.5 |
| 2T | 87–92 | 50.5 | 53.0 | 38.0 |
| 3T | 93–98 | 52.5 | 56.0 | 41.0 |
| 4T | 99–104 | 54.5 | 60.0 | 45.5 |
| 5T | 105–110 | 55.0 | 62.0 | 49.5 |
| 5-6Y / 2XS | 111–116 | 56.0 | 64.0 | 52.0 |
| 7-8Y / XS | 123–128 | 59.0 | 68.0 | 59.5 |
| 9-10Y / S | 135–140 | 63.5 | 74.5 | 65.0 |
| 11-12Y / M | 147–152 | 68.0 | 81.0 | 70.5 |
| 13-14Y / L | 159–164 | 73.0 | 89.0 | 76.5 |
| 15-16Y / XL | 171–176 | 76.5 | 94.0 | 82.0 |
Boys and girls identical. No size covers 117\u2013122cm. No slim or plus fit available.
Adidas Kids Shoe Size Chart
Adidas uses K suffix for infant/toddler shoes transitioning to plain numeric for older children. Half sizes available throughout.
| US | EU | UK | Foot length (cm) |
|---|---|---|---|
| 1K | 16 | 0K | 8.1 |
| 2K | 17 | 1K | 9.0 |
| 3K | 18 | 2K | 9.8 |
| 4K | 19 | 3K | 10.6 |
| 5K | 20 | 4K | 11.5 |
| 6K | 22 | 5.5K | 12.8 |
| 7K | 23.5 | 6.5K | 13.6 |
| 8K | 25 | 7.5K | 14.5 |
| 9K | 26 | 8.5K | 15.3 |
| 10K | 27 | 9.5K | 16.1 |
| 11K | 28.5 | 10.5K | 17.0 |
| 12K | 30 | 11.5K | 17.8 |
| 13K | 31 | 12.5K | 18.7 |
| 1 | 32 | 13.5K | 19.5 |
| 2 | 33.5 | 1.5 | 20.4 |
| 3 | 35 | 2.5 | 21.2 |
| 4 | 36 | 3.5 | 22.1 |
| 5 | 37.3 | 4.5 | 22.9 |
| 6 | 38.7 | 5.5 | 23.8 |
| 7 | 40 | 6.5 | 24.6 |
| 7.5 | 40.7 | 7 | 25.0 |
Frequently Asked Questions
Does Adidas kids run big or small?
Adidas kids runs generous in the waist compared to fashion brands — approximately 2.5cm above our reference child’s waist at 112cm and 5.5cm above in the hip. Of the three major sportswear brands Adidas is the least generous in the waist but most generous in the hip at this height.
What size is Adidas kids for a child at 120cm?
Adidas has no clothing size that covers 117–122cm. The closest sizes are 5-6Y / 2XS (111–116cm) which will be slightly short, or 7-8Y / XS (123–128cm) which will be slightly large. Nike 6X/7 covers 116–122cm and is the most precise alternative.
Is Adidas kids sizing the same for boys and girls?
Yes — Adidas uses completely identical measurements for boys and girls across all ages. This is unique among major sportswear brands. Nike and Under Armour both have separate girls’ measurements in the alpha sizes.
How does Adidas kids compare to Nike kids sizing?
At 112cm both brands are generous compared to fashion brands, but Adidas (waist 56cm) is slightly less generous than Nike (waist 57–58.5cm). The more significant difference is that Nike has a 6X/7 size covering 116–122cm while Adidas skips this range entirely.