Korean clothing labels do not provide one universal US-size conversion. Compare the exact product’s centimeter measurements with clothes that already fit you.
Last updated: August 1, 2026. Product labels, prices, tax refund handling, return rules, store policies, and stock can change, so re-check before buying.
Korean clothing labels do not have one US conversion
Numbered and letter labels can help you locate an option on a specific product page, but they do not map to a single US size across brands. Check whether the chart describes body measurements or finished garment measurements, then compare the same fields.
| Label type | Use it for | Do not infer |
|---|---|---|
| Men’s 95, 100, 105, 110 | Finding an option in that product’s numbered range. | A fixed S, M, L, or XL match across brands. |
| Women’s 44, 55, 66, 77, 88 | Finding an option in that product’s numbered range. | A fixed US letter or dress size. |
| S, M, L, XL, XXL | Finding an option in that product’s lettered range. | The same measurements as another country or brand. |
| Free size | Identifying the single size offered. | That it fits every body. |
Compare like with like: flat garment width to flat garment width, or body circumference to body circumference. Then check silhouette, fabric stretch, and the return or exchange options.
A measurement-first check before buying
Measure one item you already own and like, using the fields relevant to that garment: shoulder, flat chest, sleeve, total length, waist, rise, thigh, hip, or inseam. Save the values in centimeters, then compare them only with fields defined on the same measurement basis in the exact product chart.
- Shoulder width: important for shirts, jackets, blazers, coats, and dresses.
- Chest width: compare it flat-to-flat with a garment you own. Doubling a flat garment width gives an approximate garment circumference, not a body circumference; intended wearing ease still matters.
- Total length: determines whether a top is cropped, regular, or long on you.
- Waist and hip: critical for skirts, pants, and fitted dresses.
- Inseam: protects taller shoppers from ankle-length surprises.
- Fabric stretch: can decide whether a small difference matters.
What free size means in Korea
“Free size” does not mean one size fits every visitor. It usually means the item is sold in one size and designed to fit a limited range. That range may be generous for loose knits, cardigans, sweatshirts, or elastic-waist skirts. It may be narrow for fitted shirts, blouses, coats, mini skirts, tailored pants, and non-stretch dresses.
If a free-size item lists a model height and weight, use it as context, not as judgment. Look at shoulder seams, sleeve length, where the waist hits, and whether the model is wearing an intentionally oversized style. A free-size item that looks oversized on a petite model may fit a taller shopper as regular, cropped, or tight.
Online shopping: read the Korean size chart
Online Korean fashion stores often provide a size table with terms such as shoulder, bust/chest, sleeve, armhole, hem, waist, hip, rise, thigh, and length. Translation apps can help, but check the diagram or product photos too. Some charts use flat garment measurements. Others may use body recommendations. If the chart says there can be a 1-3 cm difference due to measuring method, do not cut it too close.
| Korean chart clue | Meaning for shoppers |
|---|---|
| cm measurements | Identify whether each value describes the finished garment or the body, then compare it on the same basis. |
| Model size | Useful context, but not enough by itself. |
| Fabric content | Stretch, thickness, and lining affect fit. |
| Fit description | Slim, regular, loose, oversized, cropped, long. |
| Exchange and return policy | Check before paying, especially for sale items. |
In-store shopping in Seoul
In major shopping areas, some stores allow trying on clothes and some do not, especially for light tops, white garments, sale items, or small boutiques. Ask before assuming. If trying on is not possible, compare the garment to your body quietly: shoulder seam to shoulder, waistband around your waist, sleeve against your arm, and length against a similar item you are wearing. This is not perfect, but it is better than buying only by label.
For shoppers who usually need extended sizes, Korean street boutiques can be hit or miss. Larger department stores, global brands, sportswear shops, select shops, men’s sections, oversized streetwear brands, and online global shipping options may be easier than small one-size boutiques. If clothing is a major trip goal, build time to browse rather than expecting every shop to fit.
Check shoes against the exact brand chart
Korean shoe sizing is often shown in millimeters, such as 230, 240, 250, 260, or 270. A size label is not always the same as measured foot length: check which one the brand chart uses. Width still matters. If you have wide feet, high arches, or need orthopedic support, try shoes in person when possible. Some fashion shoes may run narrow even when the length is correct.
Return and exchange caution
Do not assume return rules are the same as your home country. Small shops, market stalls, discounted items, cosmetics, undergarments, accessories, and opened packaging can have strict rules. Ask before payment if size is uncertain. For online purchases, check whether exchanges are possible from your country, whether return shipping is realistic, and whether sale items are final.
Before-you-buy checklist
- Save your best-fitting garment measurements in centimeters.
- Check shoulder, chest, and length for tops before caring about S/M/L.
- For pants, check waist, hip, rise, thigh, and inseam.
- Treat free size as limited size, not universal size.
- Ask about fitting rooms and return rules before paying.
- If between sizes, consider fabric stretch, silhouette, and whether you can exchange it.
Worked example: compare two non-stretch shirts
Hypothetical example: a non-stretch shirt you own measures 50 cm across the chest when laid flat. The product chart for a shirt with a similar cut lists 52 cm as a flat garment width. On the same basis, the product is 2 cm wider across the laid-flat chest, or about 4 cm larger around the garment. That estimate describes the garment, not your body, and it does not convert the shirt to a US size or guarantee fit. Compare shoulder width and total length separately because chest width does not settle those dimensions. If the chart’s 52 cm is a body measurement rather than a flat garment measurement, stop: do not double it or compare it with the 50 cm shirt. Ask the seller which basis the chart uses, compare like with like, and check the return option before buying.
Korean size words to recognize
Even if you do not read Korean comfortably, recognizing a few chart words helps. 어깨 means shoulder, 가슴 means chest or bust, 총장 means total length, 소매 means sleeve, 허리 means waist, 엉덩이 means hip, 밑위 means rise, and 안감 means lining. Translation apps can read these, but knowing what they refer to keeps you from comparing the wrong numbers.
If a shop only gives S/M/L with no centimeter chart, treat the purchase as higher risk. That does not mean never buy it. It means the price, return rule, fabric stretch, and how badly you want the item should all be part of the decision.
For shirts, use the measurement-first guide
If you are choosing a shirt or top, use the dedicated Korea shirt size guide for foreigners. It explains 95, 100, 105, free size, XXL, and flat garment measurements in centimeters without treating them as fixed US/EU equivalents. This broader page also covers pants, shoes, shopping, and return risk.
Related shopping decisions
No measurement workflow can guarantee fit across every brand. Before buying, also check the store and return context in Before You Shop in Korea, What to buy in Korea, Korea tax refund for tourists, and What not to buy in Korea.
Shoes use a separate millimeter-based label system; the Korean shoe size conversion guide gives common KR-to-US, UK, and EU examples while keeping the exact brand chart in control.
FAQ
What is a Korean shirt size 100 in US size?
There is no reliable one-to-one answer. Check whether the exact product chart uses body measurements or finished garment measurements, then compare shoulder, flat chest, sleeve, and total length with a shirt that fits.
What does Korean free size mean?
It means the garment is sold in one size. It may fit a limited range, but it is not a universal one-size-fits-all promise.
Do Korean clothes run small?
A Korean label alone cannot tell you whether an item runs small. Fit varies by product measurements, cut, intended silhouette, and fabric, even within one brand.
Should I buy clothes in Korea if I cannot try them on?
Only if the measurements, fabric, and return risk make sense. For expensive pieces, do not buy blind unless you can absorb the risk.
Related guides
- Korea shirt size guide for foreigners
- Before You Shop in Korea
- What to buy in Korea
- Korea tax refund for tourists
- Where to buy Korean products
- Olive Young shopping guide
Official measurement references and limits
The official KS K 0050 record states that the standard covers adult men’s clothing sizes, including dress shirts. The Korean Agency for Technology and Standards clothing-label example shows an example of clothing size information in centimeters, and Size Korea provides Korean anthropometric context. These are measurement and labeling references, not a universal brand conversion chart.
Last checked: August 1, 2026. Re-check the exact product chart, store label, and return policy before buying because sizing and store rules can change.
Current official measurement boundary
Use the exact garment measurements, not an assumed Korean-to-US label conversion. The linked shirt and shoe guides cover their separate measurement systems. Size Korea provides Korea’s official anthropometric-data surface; ISO 8559-1:2017 defines body-measurement concepts and was confirmed current in 2026; and ISO 8559-2:2025 bases clothing size designation on primary and secondary body dimensions. The exact brand product chart, garment measurements, cut, fabric and return route still control the purchase.