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.
More size help: baby clothes sizes by age (the complete guide) · why sizes run different by brand · shop baby clothing by size See our Baby Clothing Size Index 2026.
What size is 70, 80 or 90 in baby clothes? (European cm → US)
European and many Asian brands label baby clothes by the child's height in centimetres (50, 56, 62…). Here is what each converts to in US sizing. Brands vary by 1–3 lb on the same label — check the brand's own chart when in doubt.
| EU / cm size | US size | Approx. age | Approx. weight |
|---|---|---|---|
| 50 | Newborn | up to 1 month | up to ~9 lb |
| 56 | Newborn – 0-3M | 0–2 months | ~7–11 lb |
| 62 | 0–3M | 2–4 months | ~11–14 lb |
| 68 | 3–6M | 4–7 months | ~14–18 lb |
| 74 | 6–9M | 6–9 months | ~18–21 lb |
| 80 | 12–18M | 12–18 months | ~22–28 lb |
| 86 | 18–24M | 18–24 months | ~26–30 lb |
| 90 | 2T | ~2 years | ~28–31 lb |
| 92 | 2T | ~2 years | ~30–33 lb |
| 98 | 3T | ~3 years | ~32–36 lb |
| 104 | 4T | ~4 years | ~36–40 lb |
| 110 | 5T | ~5 years | ~41–48 lb |
Common questions
What size is 80 in baby clothes?
International/European size 80 is about a US 12–18 months — it fits most babies roughly 12 to 18 months old (around 22–28 lb). EU baby sizes are simply the child's height in centimetres, so 80 = about 80 cm tall.
What US size is 70?
Size 70 converts to about US 6–9 months (roughly 18–21 lb, ~70 cm tall).
What size is 90 in baby clothes?
Size 90 is about a US 2T (~2 years, ~28–31 lb). It sits between EU 86 (18–24M) and 92 (2T).
What does size 56 / 62 / 68 mean?
56 ≈ US Newborn–0-3M, 62 ≈ US 0–3M, 68 ≈ US 3–6M. Each number is the baby's height in centimetres.
Do European sizes run big or small vs US?
They line up by height, but individual brands still vary by 1–3 lb on the same label — check the specific brand's chart, or use our size tools below.
Get the exact size: Baby Size Calculator · size charts by brand · full size chart.