Men’s Clothing Size Converter (KR 95/100/105, S–XXL, EU)

Understanding the men's clothing size converter — concept and principle

Korean men's tops are labelled with a number such as 95, 100 or 105, while international shops use letters (S, M, L, XL) and many European brands use numbers such as 48, 50 or 52. This converter takes a Korean size and shows the usual international letter, the US/UK chest size in inches, the EU size and the chest range in centimetres, so you can shop abroad or read a foreign size label with more confidence.

All systems measure the same chest girth; only the number on the label changes. Brands vary.

How it is calculated

The calculator looks up one row of a reference chart. The rows used are:

85: XS, US/UK 34 in, EU 44, chest 82–87 cm
90: S, 36 in, EU 46, 88–93 cm
95: M, 38–40 in, EU 48, 94–99 cm
100: L, 40–42 in, EU 50, 100–105 cm
105: XL, 42–44 in, EU 52, 106–111 cm
110: XXL, 44–46 in, EU 54, 112–117 cm
115: 3XL, 46–48 in, EU 56, 118–123 cm

The principle

All three systems are built on one body measurement: chest girth, measured around the fullest part of the chest under the arms. Korean sizing for men's tops (KS K 0050) names the size after the chest girth in centimetres, so 100 means a chest of about 100 cm. US and UK sizes quote the same girth in inches (1 in = 2.54 cm). European men's sizes are roughly half the chest girth in centimetres, so EU 50 corresponds to about a 100 cm chest. Letter sizes have no fixed definition; brands map them to chest ranges themselves, which is why they vary most.

Worked example

Input: Korean size = 100.
International letter: L.
US/UK chest: 40–42 in, which is 40 × 2.54 = 101.6 cm to 42 × 2.54 = 106.7 cm.
EU: 50 (about half of a 100 cm chest).
Chest range in the chart: 100–105 cm.

How to read the result

Use the chest range rather than the letter when you can. Measure your own chest with a tape held level and snug, then pick the row whose range contains it. If you fall between two sizes, consider the fit: slim-fit and Asian brands often run smaller than US brands, and outerwear is cut with extra room. For trousers, use the waist measurement and a separate chart.

Common mistakes

Treating letter sizes as universal; a US L and a Korean or Japanese L can differ by a full size.
Measuring a garment flat across the chest and comparing it with body girth; the flat width must be doubled, and garments include ease.
Using a tops chart for suits, which may use their own chest and drop systems.

Keep in mind: This chart shows common equivalents, not an official cross-country standard. Brands and cuts differ, so always check the seller's own size chart and measurements.

Frequently asked questions

Is Korean size 100 a Large?

Usually, yes: about L internationally and EU 50, with a chest of about 100 cm.

What is Korean size 95 in US sizes?

Usually an M, with a chest of about 38–40 in.

How do I measure my chest correctly?

Stand relaxed, breathe normally and wrap the tape under your arms around the fullest part of the chest, keeping it horizontal.

Sources: KS K 0050, men's clothing sizes (Korean Industrial Standard) · EN 13402-3, Size designation of clothes, Part 3: Body measurements and intervals

Size charts differ between brands and countries — treat this as a starting point and check the maker’s own chart.