What is a US 4T in EU sizing?

A US 4T corresponds to EU 104, meaning it fits a child around 104 cm tall.

Should I buy by age or by height?

Height. Age labels assume an average growth curve that many children do not follow.

How do kids' shoe sizes convert?

Use the shoe converter and measure foot length — kids' scales differ more than adult ones between the US and UK.

Converters

Kids Clothing Size Converter

Children's clothing is labelled by age in the UK and Australia but by height in Europe and Asia. Because children of the same age vary hugely, height is always the safer guide.

Boys size chart

Boys size chart
US	UK	EU	AU	JP	CN	IN	CA	BR	FR	IT	ZA	Age	Height (cm)
5	5 y	110	5 y	110	110	5 y	5	110	110	110	5 y	5 y	110
6	6 y	116	6 y	116	116	6 y	6	116	116	116	6 y	6 y	116
7	7 y	122	7 y	122	122	7 y	7	122	122	122	7 y	7 y	122
8	8 y	128	8 y	128	128	8 y	8	128	128	128	8 y	8 y	128
10	10 y	140	10 y	140	140	10 y	10	140	140	140	10 y	10 y	140
12	12 y	152	12 y	152	152	12 y	12	152	152	152	12 y	12 y	152
14	14 y	164	14 y	164	164	14 y	14	164	164	164	14 y	14 y	164
16	16 y	172	16 y	172	172	16 y	16	172	172	172	16 y	16 y	172

How to use this converter

Choose infant, toddler, boys or girls.
Find the row matching your child's height in centimetres.
Read across for the US, EU and age-based equivalents.
When in doubt, size up — children grow faster than a shopping cycle.

Why sizes differ between countries

Size labels come from national fit blocks developed decades ago from different population surveys. The US and UK use garment-based numbering, most of Europe derives sizes from body measurements in centimetres, and Japan, Korea and China use their own regional standards. Because no global standard exists, matching your measurements to the chart is always more reliable than matching the label.

Frequently asked questions

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