Find Your US Sneaker Size From a Korean Label

Korean shoe sizes use millimeter labels, but there is no universal American conversion. Nike Korea lists KR 250 as US men’s 7 in its men’s footwear chart and US women’s 8 in its women’s footwear chart. Use the chart attached to the shoe you are buying—not a generic conversion based only on your usual US size. These examples come from the separate Nike men’s chart and Nike women’s chart.

The distinction matters when buying sneakers from a Korean retailer or checking a resale listing. A KR number helps identify the labeled size, but the brand and footwear category determine which American label belongs beside it. A listing that gives only “260” leaves part of that identification unfinished.

Choose the Nike footwear chart and Korean label; the tool shows the supported US size.

Nike’s Korean-to-US Shoe Size Chart

The table below contains Nike-specific label conversions. The men’s column follows Nike Korea’s men’s footwear chart; the women’s column follows its separate women’s footwear chart.

Read across only to the column for the product you are buying. The two US columns do not identify equivalent men’s and women’s versions of the same pair. They answer two separate questions: what Nike calls this KR size in men’s footwear, and what Nike calls it in women’s footwear.

Korean Label	US Men’s Footwear	US Women’s Footwear
245	6.5	7.5
250	7	8
255	7.5	8.5
260	8	9
265	8.5	9.5
270	9	10
275	9.5	10.5
280	10	11
285	10.5	11.5
290	11	12
295	11.5	12.5
300	12	13

Sources: Nike Korea men’s footwear and Nike Korea women’s footwear.

For example, a Nike women’s product offered in KR 270 maps to US women’s 10 on the women’s chart. A Nike men’s product offered in KR 270 maps to US men’s 9 on the men’s chart. Neither lookup tells you the fit of a different brand or establishes the paired women’s label on a men’s shoe.

If you already know your US size, you can read the table in reverse, provided you stay in the correct column. US men’s 10 maps to KR 280 in the men’s chart. US women’s 10 maps to KR 270 in the women’s chart. Searching a Korean listing for the same number without first choosing the category can therefore lead to a different labeled size.

Smaller Nike Sizes Need a Separate Check

Nike’s women’s chart includes the following smaller sizes:

Korean Label	US Women’s Footwear
220	5
225	5.5
230	6
235	6.5
240	7

Nike’s men’s chart has an additional complication: KR 235 appears beside both US men’s 4.5 and 5, while KR 240 appears beside both US men’s 5.5 and 6. For those entries, the Korean number alone cannot identify a single US men’s size.

That is a reason to request the complete size tag rather than round the number or extend the larger-size pattern downward. A seller’s “KR 235” description does not resolve whether the men’s US label is 4.5 or 5. The women’s-chart entry for KR 235 is a different lookup and does not resolve the men’s ambiguity either.

The tool preserves these duplicate entries instead of choosing one for you. Where this guide has no supported men’s entry, it reports an unknown rather than extrapolating. The supplied conversion data also stops at KR 300; it does not establish sizes beyond that range.

Unisex Sneakers Need the Product’s Paired Labels

A women’s-footwear conversion is not the same operation as translating a men’s shoe into its paired women’s US size. This is the main trap in using a combined Korean-to-American table.

Nike’s men’s chart places KR 260, US men’s 8 and US women’s 9.5 in the same column. Nike’s separate women’s chart places KR 260 at US women’s 9. Both entries belong to their respective charts; they should not be merged into a universal rule.

For a men’s or unisex Nike listing that shows an M/W pair, follow the paired labels attached to that product. If the relevant men’s-chart column is KR 260, its paired US labels are men’s 8 and women’s 9.5. Do not replace that women’s label with 9 simply because the separate women’s-footwear table shows 9 beside KR 260.

For a women’s Nike product, use the women’s footwear chart instead. The fact that another product has both men’s and women’s US labels does not change the women’s-chart conversion for the shoe you are ordering.

When a resale listing mixes a Korean size, a single US size and the word “unisex,” ask which US category the seller means. A clear size-tag photo can show the labels together. It is more useful than a seller repeating a conversion from an unspecified chart.

If the listing’s title and tag disagree, do not choose whichever number matches your usual size. Establish the product’s category and the actual labels first. Conversion is an identification step; it cannot repair an incomplete or contradictory listing.

Adidas Does Not Use Nike’s Paired US Conversion

The official adidas US chart pairs US men’s 8 with US women’s 9, rather than Nike’s 9.5. That difference applies to the paired US labels shown in those charts. It is not evidence that every adidas model fits a particular amount smaller or larger than every Nike model.

For an adidas purchase, switch to the adidas chart before translating labels. Starting with Nike’s KR table and then applying an adidas men’s-to-women’s pairing combines two different systems. The result may look precise, but it is not a conversion supported by either chart.

There is another regional-label distinction. Adidas’s US chart lists a 25.0 cm heel-to-toe measurement alongside US men’s 7.5 and JP 255. Its Korean size chart labels that regional row Japan (일본), not Korea. A millimeter-style number on a Korean website is therefore not automatically a KR label.

Read the row heading as well as the value. “JP 255” and a Nike KR entry are not interchangeable just because both use a three-digit number. The retailer’s location does not rename the sizing system printed in the brand’s chart.

This guide does not supply a complete adidas Korean-to-US conversion table, so the tool does not offer an adidas mode. For the wider brand comparison, use our adidas vs. Nike sizing guide, then confirm the chart for the actual product.

A Korean Size Label Is Not a Foot Measurement

Converting 260 millimeters to 26 centimeters is straightforward. Using that arithmetic to select a shoe is a different matter. It does not establish that a KR 260 shoe has an internal length of 260 mm, or that it is automatically the correct choice for a foot measuring 260 mm.

Nike explicitly warns that the CM size printed on its boxes and labels differs from measured foot length. The adidas example above makes the distinction visible too: a 25.0 cm heel-to-toe measurement sits beside JP 255, not an identical measurement expressed in millimeters.

Keep label conversion and measurement-based sizing separate. If your starting point is an existing shoe’s KR tag, use the brand’s label-conversion rows. If your starting point is a measurement of your foot, use the brand’s foot-length or heel-to-toe row. Moving directly from the measured number to the closest-looking regional label skips the chart’s sizing relationship.

For measurement-based selection, Nike recommends measuring both feet, using the longer result and choosing the larger size when between chart entries. Those instructions, including the distinction between label CM and foot length, appear in its footwear sizing guidance.

The conversion tool deliberately asks for a Korean label, not your foot length. Entering a measurement as though it were a label would produce a label lookup, not a fit recommendation. No shoe interior measurements or model-specific fit measurements are supplied in the source data.

Use Your Existing Pair as a Label Reference

If you are replacing a pair that fits, begin with its full tag rather than your remembered size. Record the brand, the footwear category and the regional labels shown together. That gives you a reference you can compare with the new listing.

For a same-brand purchase, the appropriate chart can help identify the corresponding label. For a different-brand purchase, restart with that brand’s chart. A familiar KR number is not enough to carry Nike’s conversion into adidas, and a familiar US women’s number does not settle whether the listing uses women’s footwear sizing or a paired label on a men’s shoe.

A tag comparison also helps separate a sizing discrepancy from a fit discrepancy. If the labels match the intended chart but the new sneaker feels different, repeating the Korean-to-US conversion will not explain its toe room, forefoot width or heel hold. Those are fit checks, not additional regional-size conversions.

Use our sneaker fit guide for those checks. The chart here supplies no model-specific adjustment, so it does not justify automatically sizing up or down for a particular sneaker silhouette.

Resolve an Incomplete Listing Before Ordering

A listing with the brand, product category and full size tag gives you enough information to select the relevant chart. A listing with only a Korean number does not. Ask for the missing designation or tag photo before treating a conversion as settled.

For Nike KR 260, the question to resolve is whether you need the men’s-footwear entry, the women’s-footwear entry or the paired M/W labels on the product. The supported answers are US men’s 8 on the men’s chart, US women’s 9 on the women’s chart, and US women’s 9.5 as the paired label in that men’s-chart column.

For Nike men’s KR 235 or 240, the question is narrower: which of the duplicate US entries appears on the actual pair? The chart has already shown why the KR number cannot answer that alone.

For an adidas listing, first establish whether the millimeter-style value is labeled JP or something else, then consult the matching adidas rows. Do not let a Korean storefront, a familiar number or a generic conversion chart substitute for the brand’s own label definitions.

Once the label is identified, assess fit separately. A supported American conversion tells you what size designation you are buying; it does not guarantee that the shoe will fit like a different model you already own.