3Y (GS) in men’s and women’s sizes
A 3Y (grade school) is a men’s US 3 and a women’s US 4.5 by the standard size tables: Y sizes use men’s numbers.
UK 2, EU 33.5–34, for a foot of 20.7 to 21.2 cm.
5 of 7 brands map it differently on their own charts (ANTA, Converse, Golden Goose and 2 more). Check the brand you’re buying.
How 7 brands map 3Y
| Brand · their big-kid size | On their adult chart | Foot, 3Y | Matched by |
|---|---|---|---|
| ANTA size chart (opens the brand’s site)US 3Y | W US 5 | 22.0 cm | UK 2.5 |
| Converse size chart (opens the brand’s site)US 3Y | W US 5 | — | EU 35 |
| Golden Goose size chart (opens the brand’s site)EU 35 | W US 5 | 23.0 cm | EU 35 |
| Jordan size chart (opens the brand’s site)US 3Y | M US 3 · W US 4.5 | 21.8 cm | printed beside its US 3Y |
| KEEN size chart (opens the brand’s site)US 3 | W US 5 | 21.6 cm | EU 35 |
| Nike size chart (opens the brand’s site)US 3Y | M US 3 · W US 4.5 | 21.8 cm | printed beside its US 3Y |
| Saucony size chart (opens the brand’s site)3 Big Kids | M US 4 · W US 5.5 | 22.9 cm | printed beside its US 3 |
From each brand’s own charts, linked: the other side’s size where the chart prints it beside this one, or both sizes on one row; otherwise the row on the other chart with the same EU (or UK) size; otherwise the nearest foot length, within 3 mm. “Foot” is the brand’s own foot length for 3Y, where its chart gives one, not for the size it maps to. Highlighted rows differ from the standard tables. Not affiliated with any brand.
Who wears 3Y?
The median child’s foot reaches this size at about 9½ years, in the US Consumer Product Safety Commission’s survey of children.
The foot each brand’s own chart makes 3Y for runs from 21.0 cm (Vans) to 23.0 cm (Golden Goose) across 8 charts; the standard size tables make it for a foot up to 21.2 cm. Pick the brand whose foot length is at or just above yours.
- Golden Goose 23.0 cm
- Saucony 22.9 cm
- ANTA 22.0 cm
- Nike 21.8 cm
- KEEN 21.6 cm
- Campus 21.3 cm
- Veja 21.3 cm
- Vans 21.0 cm
Shops label 3Y differently: Foot Locker calls it PS (preschool) and ASICS GS (grade school), so search both labels.
Convert another size
3Y in every system
| System | Size |
|---|---|
| Foot length (cm) | 20.7–21.2 |
| US men’s | 3 |
| US women’s | 4.5 |
| UK | 2 |
| EU | 33.5–34 |
| Mondopoint (mm) | 210–215 |
| Japan (cm) | 21–21.5 |
From the standard size tables; where the foot range spans two sizes, both are shown.
Size tables checked 2026-10-23; brand sizes from each brand’s own charts, linked above. An estimate to help you choose: fit varies by brand and model. Not medical advice.