A children's clothing size chart helps you find the right fit by matching your child's age, height, and weight to US, UK, and EU clothing sizes. Because children grow at different rates, height is the most reliable measurement — always size up when between sizes.
Find Your Child's Clothing Size
Complete Children's Clothing Size Chart
| Age | US Size | UK Size | EU Size |
|---|
How to Use the Children's Clothing Size Chart
Finding the right clothing size for children can be frustrating because sizing varies between brands and countries. This children's clothing size chart converts between US, UK, and EU sizes using height and weight as the primary measurements.
Why Height Is the Best Measurement
Age-based sizing is unreliable because children grow at different rates. A 3-year-old might fit size 2T or size 4T depending on their build. Height is more consistent — it determines inseam length, sleeve length, and overall fit more accurately than age alone.
Understanding Size Labels
US children's sizes fall into four ranges: Newborn (NB, 0–3M, 3–6M, 6–9M), Infant (12M, 18M, 24M), Toddler (2T, 3T, 4T, 5T), and Kids (4, 5, 6, 6X, 7, 8, 10, 12, 14, 16). The "T" in toddler sizes indicates a diaper-friendly cut with extra room in the seat. EU sizes (like 86, 98, 110, 122) directly correspond to height in centimeters.
When to Size Up
If your child is between sizes, always size up. Children grow quickly — especially in height — and slightly larger clothing will last longer. For jackets and outerwear, go up a full size to allow for layering. For school uniforms, size up at the start of the year.
FAQ
Is this children's clothing size chart free?
Yes, completely free.
How do I know which clothing size to buy for my child?
Use height as the primary measurement — it's more reliable than age or weight alone. If your child is between sizes, size up. Children often wear clothes for 6–9 months; taller or heavier children may need a larger size for the same age. Always check the brand's size chart since sizing varies between manufacturers.
What is the difference between 4T and size 4?
4T (toddler) is designed for children in diapers — it has a wider seat and shorter inseam. Size 4 (children's) is cut for potty-trained children with a slimmer fit. A child transitioning from diapers might fit both, but 4T accommodates diapers better. Most children switch from T sizes to regular sizes around ages 4–5.
How do EU children's sizes work?
EU children's clothing sizes are based on height in centimeters. Size 86 fits a child about 86cm tall (approximately 12–18 months). Size 98 = ~98cm tall (~2–3 years). Size 122 = ~122cm tall (~7 years). This system is more consistent across brands than US age-based sizing.
When do children's sizes start fitting like adult sizes?
Children's large/XL (typically size 14–16, about ages 12–14) often corresponds to an adult XS or S. Many teens can wear both adult and children's sizing — children's sizes are typically cheaper and equivalent quality. Girls tend to transition earlier than boys due to earlier puberty onset.