EU to US Kids' Clothing Size Conversion

Why a single EU height doesn’t land on one US age label

A European brand’s 122cm size describes a real height with far less ambiguity than the US side of this conversion, which has to guess at an age band instead — a EU 122cm child could plausibly be shopping a US 6, 7, or even 8 depending on which brand’s own age-to-height table you’re reading, since American labeling was never built around one tightly agreed height standard the way the EU centimetre system is.

The retailers worth trusting are the ones that show their working

A growing number of US children's retailers now print an actual height-in-inches or height-in-cm range directly on the size chart rather than relying on the bare age label alone — those are the listings worth prioritizing for a EU-to-US conversion specifically, since matching your child's measured height against a published range sidesteps the age guesswork almost entirely.

European brands sold secondhand complicate this further

A EU-labeled item bought secondhand or handed down loses any age context entirely, since the previous child's age at the time of purchase tells you nothing about your own child's current height — treating a secondhand EU size purely as its stated centimetre figure, remeasured against your child today, avoids inheriting someone else's outdated assumption.

Shoe sizing on the same trip doesn’t follow this same logic

If you're converting a EU kids' clothing order alongside a EU kids' shoe order for the same child, don't assume the two conversions behave the same way — shoe sizing runs on foot length specifically, a completely different measurement from height, and this site's dedicated kids' shoe chart covers that separately rather than sharing this page's height-to-age reasoning.

What actually settles an unfamiliar US order

Measure your child's height in centimetres as close to order time as you can, favor a US retailer that publishes its own height range over one that lists age alone, and treat the age label itself as the least reliable piece of information on either side of this conversion.

None of this makes the EU-to-US direction unusually hard compared to other kids' clothing conversions on this site — it just means the burden of precision sits more on finding a good US retailer chart than on any arithmetic this page could hand you directly.

If you're shopping for more than one child, keep separate height notes for each — siblings at different growth stages will land on different points along the EU centimetre scale regardless of how their ages compare, and treating them identically is a common source of a wrong-size order for the younger or older child.