How this conversion works
Korean top sizes (90, 95, 100…) are conventionally just the wearer's chest or bust circumference in centimeters, rounded to the nearest 5 cm. This calculator takes your measured circumference, finds the nearest 5 cm bracket, and reads off the S/M/L letter, US, and EU sizes that commonly pair with it.
- KR — Korean top size, rounded to nearest 5 cm of chest/bust
- US / EU — commonly published equivalents for that bracket (men's and women's scales differ)
More detail
Why Korean sizes are just a body measurement
Unlike the letter-based S/M/L system, Korean tops are traditionally labeled by the circumference (cm) they're cut to fit — a "100" top is built for roughly a 100 cm chest. That's why entering your actual measurement, not a size you already own, gives the most useful starting point here.
Why men's and women's tables aren't just offset by a constant
Men's and women's clothing use separate size grids that don't scale together in a simple way — the US numeric system for women (2, 4, 6…) and for men (34, 36, 38…) come from entirely different historical conventions, not a shared formula. This calculator looks each measurement up in its own gender-specific table rather than converting one from the other.
Fitting tip. When your measurement falls between two brackets, sizing up usually gives a safer fit for structured garments (blazers, dress shirts) while sizing down works better for stretch fabrics (knitwear, jersey).
Frequently asked questions
What Korean size fits a 100cm chest?
Men's: KR 100 / L / US 40 / EU 50 — enter 100 with "Men's" selected above to confirm. The Korean number and your chest measurement line up almost directly at round 5 cm brackets.
What Korean size fits a 95cm bust for women's tops?
KR 95 / M / US 10 / EU 40 — enter 95 with "Women's" selected. Note women's US numeric sizing (6, 8, 10…) uses a completely different scale from men's (34, 36, 38…), so don't compare the US numbers across genders directly.
My chest measurement (92cm) isn't a round number — what size do I use?
This calculator rounds to the nearest 5 cm bracket, so 92 cm (men's) rounds down to the KR 90 / S bracket rather than up to 95 — enter 92 above to see this in action.
Why doesn't a US 38 always fit the same in every brand?
Clothing sizing isn't governed by one international standard the way units like length are — each brand cuts to its own block pattern, so a US 38 dress shirt from one label can fit like a 40 from another. This calculator gives commonly published equivalents, not a guarantee for any specific brand.