Kids size calculator
Baby & kids' sizes converted
From size 50 to 176: find out which size fits your child's age and height — and what “3T” or “4–5 Y” means in foreign shops.
Kids' sizes conversion: the short answer
In Germany and most of Europe, the kids' size is the child's height in centimeters: size 104 fits children up to about 104 cm. The sizes go up in 6 cm steps (50, 56, 62 … 176). US toddler sizes carry a “T”: 2T ≈ 92, 3T ≈ 98, 4T ≈ 104.
Kids' size chart: size, age, UK and US
| EU | Age | UK | US | Height |
|---|---|---|---|---|
| 50 | 0–1 month | Newborn | NB | 45–50 cm |
| 56 | 1–2 months | 0–3 M | 0–3 M | 51–56 cm |
| 62 | 2–4 months | 0–3 M | 0–3 M | 57–62 cm |
| 68 | 4–6 months | 3–6 M | 3–6 M | 63–68 cm |
| 74 | 6–9 months | 6–9 M | 6–9 M | 69–74 cm |
| 80 | 9–12 months | 9–12 M | 9–12 M | 75–80 cm |
| 86 | 12–18 months | 12–18 M | 12–18 M | 81–86 cm |
| 92 | 18–24 months | 18–24 M | 2T | 87–92 cm |
| 98 | 2–3 years | 2–3 Y | 3T | 93–98 cm |
| 104 | 3–4 years | 3–4 Y | 4T | 99–104 cm |
| 110 | 4–5 years | 4–5 Y | 5 | 105–110 cm |
| 116 | 5–6 years | 5–6 Y | 6 | 111–116 cm |
| 122 | 6–7 years | 6–7 Y | 7 | 117–122 cm |
| 128 | 7–8 years | 7–8 Y | 8 | 123–128 cm |
| 134 | 8–9 years | 8–9 Y | 10 | 129–134 cm |
| 140 | 9–10 years | 9–10 Y | 10 | 135–140 cm |
| 146 | 10–11 years | 10–11 Y | 12 | 141–146 cm |
| 152 | 11–12 years | 11–12 Y | 12 | 147–152 cm |
| 158 | 12–13 years | 12–13 Y | 14 | 153–158 cm |
| 164 | 13–14 years | 13–14 Y | 16 | 159–164 cm |
| 170 | 14–15 years | 14–15 Y | 18 | 165–170 cm |
| 176 | 15–16 years | 15–16 Y | XS (adult) | 171–176 cm |
Ages are averages — children grow at different speeds. Height is what counts.
- EU – Size = height in centimeters
- Age – Approximate age
- UK – United Kingdom (by age)
- US – United States, Canada
- Height – Matching height
Height matters more than age
The age on the label is only a rough pointer: two four-year-olds can be 10 cm apart. So measure your child regularly — babies about every four to six weeks, toddlers every three months. Our guide to measuring children explains how to manage it even with a wriggly one.
Babies grow fastest in their first year and then slow down. That is why it is worth buying baby clothes in small batches per size.
Combined sizes like 62/68 or 98/104
Knitwear, pajamas and stretchy fabrics are often sold in combined sizes. A “98/104” fits children from about 93 to 104 cm. That is handy, because the garment lasts longer — but it does sit a little loose at first.
Sizes in the UK and the US
- The UK sizes children's clothes by age: “0–3 M” (months) or “4–5 Y” (years).
- The US: babies by month (0–3 M up to 18–24 M), toddlers with a “T” (2T–5T), and school-age children by number (5, 6, 7, 8, 10, 12, 14, 16).
Tips for getting the size right
Newborns
Size 50 is often outgrown within days. Many parents start with size 56 — newborns are around 50 cm long on average.
Between two sizes
Always take the larger one. Sleeves and legs can be rolled up; clothes that are too small just pinch.
Think about the season
Buying winter clothes in summer? Allow for the growing your child will do before the season starts — usually one size more.
FAQ about kids' sizes
What clothing size does a 2-year-old wear?
Two-year-olds usually wear size 92 to 98. Height decides: up to 92 cm take size 92, up to 98 cm take size 98.
What does 4T mean in kids' clothing?
4T is a US toddler size and matches about size 104 (ages 3 to 4).
What size does a child of 110 cm wear?
A child 110 cm tall wears size 110. If they are just above that, go for size 116.
Newborn sizes: is 50 or 56 better?
For the first weeks size 56 usually fits best, since newborns are around 50 cm long on average and grow quickly. Size 50 is mainly worth it for small babies.
What does “5–6 Y” mean?
“Y” stands for years. 5–6 Y matches about size 116.