Korean Kids' Clothing Size to US Converter (cm to 2T–16)

Korean to US kids' clothing size chart

The first table estimates US sizes from Korean height-based labels. The second shows the illustrative US height ranges used for that estimate. Check the seller's own chart because ranges and fits differ.

Korean kids' sizes → US sizes

Korean kids' sizes → US sizes
Korean cm	Height cm	Height in	US	Approx. age
90	85–95	33.5–37.5	2T–3T	approx. 2–3 yrs
100	95–105	37.5–41.5	3T–4T	approx. 3–4 yrs
110	105–115	41.5–45.5	5–6	approx. 5–6 yrs
120	115–125	45.5–49	6–7	approx. 6–7 yrs
130	125–135	49–53	7–8	approx. 7–8 yrs
140	135–145	53–57	10–12	approx. 9–10 yrs
150	145–155	57–61	12–14	approx. 11–12 yrs
160	155–165	61–65	14–16	approx. 13–15 yrs

For this guide, each Korean size covers the labelled height ± 5 cm; sellers may use different ranges. The US column lists every US size whose illustrative height range (second table) overlaps that span by at least 2 cm; the 160 row reaches into US 16. Ages are rough guides only.

US kids' sizes by height

US kids' sizes by height
US	Height in	Height cm	Approx. age
2T	33–35.5	84–90	approx. 2 yrs
3T	35.5–38	90–97	approx. 3 yrs
4T	38–41	97–104	approx. 4 yrs
5	41–44	104–112	approx. 5 yrs
6	44–47	112–119	approx. 6 yrs
7	47–50	119–127	approx. 7 yrs
8	50–53	127–135	approx. 8 yrs
10	53–56	135–142	approx. 9–10 yrs
12	56–59	142–150	approx. 11–12 yrs
14	59–62	150–157	approx. 13–14 yrs
16	62–65	157–165	approx. 14–15 yrs

Illustrative US height ranges used by this page; actual ranges vary between sellers. Check the seller's measurements before ordering.

How Korean kids' sizes work

Many Korean children's clothing labels use height in centimetres. This guide treats 90, 100, 110, 120, 130, 140, 150 and 160 as midpoints of ranges extending 5 cm either side: 110 is estimated at 105–115 cm and 130 at 125–135 cm. Other ranges are used by sellers, so check their chart. Smaller labels can be used for babies. Korean infant sizing standards use height as a key measurement, but this guide's ranges are illustrative rather than a reproduction of a standard.

Some domestic brands use odd-numbered 호 (ho) labels, such as 5호, 7호 and 9호. Their meanings vary between sellers and are not direct centimetre measurements. Use the height range in the seller's chart rather than a fixed 호 conversion.

How to measure your child

Have your child stand without shoes on a hard floor, heels, back and head against a wall, looking straight ahead. Rest a flat book on the head, mark where its underside meets the wall, and measure floor to mark in centimetres. Re-measure every few months; kids can grow a full size in one season.

Height beats age: two four-year-olds can differ by 10 cm, a whole Korean size. If a Korean listing shows 실측 (actual garment measurements), compare 총장 (total length, collar to hem) and 가슴단면 (chest width measured flat; double it for the circumference) with a garment that fits well.

Converting Korean cm sizes to US sizes

US children's sizes mix several systems. Toddler sizes 2T, 3T and 4T fit roughly ages two to four; the T means toddler; some cuts leave room for a diaper, and some brands add a 5T that matches size 5 in height. Little kids' sizes 4–7 cover similar heights with a different cut, and in this guide big kids' sizes 8, 10, 12, 14 and 16 run to about 165 cm (65 in). A US tag usually quotes a height range and a weight range, not one number.

This page converts by height. Each US size uses the illustrative range in the US reference table: 2T is 33–35.5 in (84–90 cm), 4T is 38–41 in (97–104 cm) and size 8 is 50–53 in (127–135 cm). A Korean size is matched to every US size whose range overlaps its ±5 cm span by at least 2 cm, so these rows list two approximate US sizes: a Korean 100 (95–105 cm) covers US 3T–4T, a Korean 120 (115–125 cm) covers US 6–7 and a Korean 160 (155–165 cm) reaches US 14–16. A height that lands exactly on a boundary returns the larger size.

Why brands differ, and how to shop

The height number describes the child, not the garment, so two 120s can fit very differently. Sleeve and body lengths can differ between brands even at the same height. US ranges also move: one brand's size 5 may run to 44 in while another's stops at 42, so the reference table is an example, not a rule.

Consider the garment and desired fit when choosing between sizes. Prefer listings that show 실측 measurements. For US brands, read reviews for "runs small" or "runs big" and check whether a style is slim, regular or husky, which changes the fit at the same height. Free returns make it easy to order two neighbouring sizes and keep one.

Quick reference: the sizes people look up most

Examples using this guide's approximate ranges:

Korean 90 (85–95 cm) ≈ US 2T–3T
Korean 100 (95–105 cm) ≈ US 3T–4T
Korean 110 (105–115 cm) ≈ US 5–6
Korean 120 (115–125 cm) ≈ US 6–7
Korean 130 (125–135 cm) ≈ US 7–8
Korean 140 (135–145 cm) ≈ US 10–12
Korean 150 (145–155 cm) ≈ US 12–14

Korean kids' clothing size FAQ

What is Korean kids' size 110 in US sizes?

In this guide, Korean 110 covers a child about 105–115 cm (41.5–45.5 in) tall, which covers US size 5 (104–112 cm) and the lower part of US 6 (112–119 cm). The match is approximate; check the seller's measurements.

What Korean size is a US 4T?

In this guide, US 4T covers roughly 38–41 in (97–104 cm), which sits inside the Korean 100 (95–105 cm). A child at the top of the 4T range may be more comfortable in a Korean 110.

What does the T in 2T, 3T and 4T mean?

T stands for toddler. Some toddler cuts leave room for a diaper and can differ in length or fit from little-kid sizes covering similar heights. Korean sizes 90 and 100 cover about the same height band as 2T–4T.

Is Korean kids' size 100 the same as age 3?

Only roughly. A 100 fits heights of 95–105 cm, which is typical around ages 3–4, but children of the same age commonly differ by 10 cm. Always size by measured height.

How do I read the height range on a US kids' tag?

Convert the inch range to centimetres (1 in = 2.54 cm) and compare it with your child's measured height. In this guide, US size 8 is 50–53 in, which is 127–135 cm and almost the same band as a Korean 130 (125–135 cm).

What do 5호, 7호 and 9호 mean on Korean kids' clothes?

Some domestic brands use odd-numbered 호 (ho) labels, but their corresponding measurements vary. Check the seller's height range and garment measurements rather than relying on a fixed conversion.

What Korean size matches US 10 or 12?

In this guide, US 10 (135–142 cm) matches a Korean 140 (135–145 cm). In this guide, US 12 (142–150 cm) overlaps Korean 140 and 150. Use the child's height as a starting point and check the seller's chart for the final choice.