Korean Men's Clothing Size to US: 90, 95, 100, 105, 110

Korean to US men's size chart

The first table lists each Korean number with an example tag letter, an approximate chest range and a US comparison. The second table shows the US reference used for that comparison.

Korean men's sizes (85–115)

Korean men's sizes (85–115)
Korean size cm	Korean tag	Chest cm	Chest inches	US fit
85	XS	83–87	32.5–34.5	XS
90	S	88–92	34.5–36	S
95	M	93–97	36.5–38	S–M
100	L	98–102	38.5–40	M
105	XL	103–107	40.5–42	M–L
110	XXL	108–112	42.5–44	L
115	3XL	113–117	44.5–46	L–XL

Korean size is a chest measurement in cm; the ±2 cm bands are an approximate guide. “US fit” compares the centre number with the reference ranges below; S–M means it falls between two ranges. Tag letters vary by seller.

US men's letter sizes (reference)

US men's letter sizes (reference)
US size	Chest inches	Chest cm	Waist inches	Waist cm
XS	32–34	81–86	26–28	66–71
S	34–36	86–91	28–30	71–76
M	38–40	97–102	32–34	81–86
L	42–44	107–112	36–38	91–97
XL	46–48	117–122	40–42	102–107
XXL	50–52	127–132	44–46	112–117

These example US ranges leave gaps between some letters. If your measurement falls in a gap, compare both neighbouring sizes with the seller's measurements.

How Korean men's sizes work

Korean men's tops are sized by chest circumference in centimetres. A jacket marked 100 is cut for a chest of about 100 cm (39.4 inches); sizes climb in 5 cm steps from 85 to 115. The number comes from the national apparel standard KS K 0050 (men's clothing sizes), which labels a garment with the body measurement it fits.

Some tags add a height: 100-175 means chest 100 cm, height 175 cm, and suits may add the waist too (100-88-175). One common tag convention is 90 S, 95 M, 100 L, 105 XL and 110 XXL, but letters vary by seller. Compare the measurements rather than assuming that a letter means the same thing everywhere.

How to measure your chest

Wrap a soft tape around the fullest part of your chest, under the arms and across the shoulder blades, over a thin T-shirt. Keep it level and snug, and breathe normally as you read it. A 97 cm reading sits at the top of a Korean 95 and the bottom of a US M, so the converter shows Korean 95 alongside US M.

Korean shops may publish 실측, the garment's own measurements, rather than body sizes. The key line is 가슴단면, the chest measured flat across the front: doubling it estimates the garment's chest circumference. Allow room for movement according to the garment and your preferred fit. 어깨너비 is shoulder width, 총장 is total length and 소매길이 is sleeve length.

Converting Korean to US sizes

The table reads the Korean number as a chest in centimetres (±2 cm), converts it at 2.54 cm per inch and finds the US letter whose range contains it on the common US chart: S 34–36 in, M 38–40 in, L 42–44 in, XL 46–48 in. A Korean 100 is a 39.4-inch chest, squarely a US M. A 95 (37.4 in) falls in the gap between S and M and shows as S–M; a 105 (41.3 in) shows as M–L; a 110 (43.3 in) is a US L.

Under these example conventions, Korean 100 may be tagged L while the same chest measurement falls in US M. Use that as a starting point and check each seller's measurements: labels and cuts differ. Korean jeans and chinos may use inch waist labels or centimetres; 82 cm is about 32 inches, but the garment's actual measurements still vary.

Why brands differ, and how to shop

A body measurement is not the garment measurement: each brand decides how much room to add. Shoulder width, sleeve length and overall length can vary even when two labels show the same chest size. Fit names such as regular, tapered and oversized are useful clues, but compare the measurements because each seller defines them differently.

Check shoulder width as well as chest and length. Compare the seller's 어깨너비 with a shirt that fits you well. Reviews help too: 정사이즈 means true to size, 크게 나왔어요 runs large and 작게 나왔어요 runs small. Near a boundary, choose by the garment's measurements, not its letter.

Quick reference: the most searched sizes

Using the convention above (Korean number = chest in cm):

Korean 90 (S) = chest 88–92 cm (34.5–36 in) → US S
Korean 95 (M) = chest 93–97 cm (36.5–38 in) → US S–M
Korean 100 (L) = chest 98–102 cm (38.5–40 in) → US M
Korean 105 (XL) = chest 103–107 cm (40.5–42 in) → US M–L
Korean 110 (XXL) = chest 108–112 cm (42.5–44 in) → US L
US M (38–40 in) → Korean 100 · US L (42–44 in) → Korean 110

Korean men's size FAQ

What is Korean size 100 in US men's sizes?

In this guide, Korean 100 covers an estimated 98–102 cm chest (38.5–40 inches); its centre corresponds to US M in the reference chart. Some Korean tags say L, but labels vary.

What is a Korean 95 in US sizes?

A Korean 95 (tagged M) fits a 93–97 cm chest, about 36.5–38 inches. That lands between US S (34–36 in) and US M (38–40 in), so try S for a closer fit or M for more room.

I wear a US L. Which Korean size should I buy?

A US L is a 42–44 inch chest (107–112 cm), which matches Korean 110 (tagged XXL). If you are at the lower end, Korean 105 (103–107 cm) can also work; check the shoulder width in the seller's 실측 table.

What does 100-175 on a Korean tag mean?

Chest 100 cm and height 175 cm. Suits may show three numbers, such as 100-88-175: chest, waist and height in centimetres.

Are Korean trouser sizes the same as US trouser sizes?

Some Korean jeans and trousers use inch waist labels, while others use centimetres. A nominal 32-inch waist is about 81 cm; check the seller's measurements because cuts vary.

How do I read 가슴단면 in a Korean size chart?

가슴단면 is the garment's chest measured flat across the front; doubling it estimates the full garment chest. For example, 55 cm across is about 110 cm around. Compare it with a garment you like and leave room for movement.

Why does a Korean XL feel like a US M or L?

Because the letters are attached to different chest sizes. Korean XL is a 105, cut for 103–107 cm (40.5–42 in), which sits between US M (38–40 in) and US L (42–44 in).