What is EU size 104 in US children's clothing?

EU size 104 corresponds to a child approximately 98–104 cm tall, which is typically a 3–4 year old. In US sizing this is closest to a 4T or size 4. EU children's sizes are based on height in centimeters, so EU 104 means the garment fits a child up to 104 cm tall.

What size does a 4-year-old wear?

A typical 4-year-old wears US size 4T or size 4 (the transition between toddler and kids sizing). In EU sizing this corresponds to size 104 (fitting children up to 104 cm / 41 inches tall). In UK sizing it is size 3–4 years. Of course, children vary significantly in height and weight — always check your child's actual measurements against the size chart.

How do I convert kids clothing sizes to European?

EU children's sizes are based on the child's height in centimeters. Measure your child's height, then look up the nearest EU size (e.g. a 110 cm child wears EU 110). US toddler T-sizes (2T, 3T, 4T, 5T) correspond to EU 92, 98, 104, 110 respectively. US kids' numerical sizes (4–16) correspond to EU sizes roughly 104–176 depending on age and height.

Kids Clothing Size Guide: US, EU & UK by Age, Height & Weight

Toddler Sizes (2T–5T)

US “T” sizes (2T through 5T) are designed for toddlers who are still in diapers or recently potty-trained — the cut is roomier in the seat. EU sizes for this age range are based on the child's height in centimeters.

US Size	EU Size	UK Size	Approx. Age	Height (in)	Height (cm)	Weight (lbs)	Weight (kg)
2T	92	1–2 yrs	18–24 mo	33–35	84–89	26–29	12–13
3T	98	2–3 yrs	2–3 yrs	36–38	91–97	30–34	14–15
4T	104	3–4 yrs	3–4 yrs	39–41	99–104	35–40	16–18
5T	110	4–5 yrs	4–5 yrs	42–44	107–112	41–45	19–20

Kids Sizes (4–16 / XS–XL)

From size 4 onward, children's sizes transition to a numeric system in the US (4, 5, 6, 6X, 7, 8, 10, 12, 14, 16) or letter system (XS–XL). EU sizing continues to be height-based. The chest measurement is often the most reliable way to ensure a good fit in tops.

US Size	Letter	EU Size	UK Size	Height (in)	Height (cm)	Chest (in)	Chest (cm)
4	XS	104	3–4 yrs	39–41	99–104	21–22	53–56
5	XS	110	4–5 yrs	42–44	107–112	22–23	56–58
6	S	116	5–6 yrs	44–47	112–119	23–24	58–61
7/8	M	128	7–8 yrs	48–51	122–130	25–26	64–66
10	L	140	9–10 yrs	52–55	132–140	27–28	69–71
12	L	152	11–12 yrs	56–59	142–150	29–30	74–76
14	XL	164	13–14 yrs	60–63	152–160	31–32	79–81
16	XL	176	14–16 yrs	63–66	160–168	33–34	84–86

How EU Children's Sizing Works

Unlike US sizing (which blends age, weight, and arbitrary convention), EU children's sizes are purely height-based. EU 110 means the garment is designed for a child up to 110 cm tall. This makes sizing predictable: simply measure your child's height in centimeters and look for that number on EU labels. The primary caveat is that children of the same height can have very different builds, so checking chest and waist measurements is still advisable for fitted garments.

Measurement Tips

Height: Measure without shoes, standing against a wall with feet flat on the floor.
Chest: Measure around the fullest part of the chest, just under the armpits, keeping the tape level.
Waist: Measure around the natural waistline with the tape comfortably loose.
Inseam: Measure from the crotch to the floor for bottoms.

Use our length converter to switch between inches and centimeters, and our weight converter to convert pounds to kilograms.