Baby Clothes Size Converter (US / UK / EU / AU)
Shopping a brand from another country? Convert baby clothing and shoe sizes between the US, UK, Europe and Australia in one tap.
Sizes are approximate and vary by brand — always check the specific brand's size chart, and when in doubt, size up. EU/AU baby clothing is often labeled by height (cm); US and UK typically use age. Conversions are general guidance to help you shop international brands.
Baby & kids clothing size chart by age (US · UK · EU · AU)
| Age | US | UK | EU (height cm) | Australia |
|---|---|---|---|---|
| Newborn | Newborn | Newborn | 56 | 0000 |
| 0–3 months | 0–3M | 0–3M | 56–62 | 000 |
| 3–6 months | 3–6M | 3–6M | 62–68 | 00 |
| 6–9 months | 6–9M | 6–9M | 68–74 | 0 |
| 9–12 months | 9–12M | 9–12M | 74–80 | 1 |
| 12–18 months | 12–18M | 12–18M | 80–86 | 1–2 |
| 18–24 months | 18–24M | 18–24M | 86–92 | 2 |
Approximate — sizes vary by brand; always check the specific brand’s size chart, and when in doubt, size up.
Size conversion — FAQ
How do baby clothing sizes convert between US, UK, EU and Australia?
US and UK baby sizes are both given in months (e.g. 0–3M) and line up closely. EU sizes use the child’s height in centimetres (e.g. 62), and Australian sizes use a number code (0000 for newborn up). Use the age row above to line them up.
How do I know what size to buy?
Go by your baby’s current weight and height rather than the age on the label, since babies vary a lot. Brands differ too, so check each brand’s own chart — and if your baby is between sizes, size up.