US to JP Shoe Size Converter
Japanese sizes track foot length in centimeters. Convert your US size, then measure cm if you are between sizes.
US 8 → JP ~26 (men) · measure both feet in cm when unsure
Men's US to JP
Women's US to JP
US to Japan (JP/cm) shoe sizes
Japanese shoe sizes often use centimeters directly (e.g., 26.5 cm) or a JP number aligned to foot length. US men's 9 frequently maps to ~27 cm JP, not 'US minus 18' reliably.
Unisex JP listings may show cm on the box. Treat cm as the truth when converting from US.
US men to JP/cm
| US Men | JP/cm | EU | UK |
|---|---|---|---|
| 7 | 25 | 40 | 6 |
| 8 | 26 | 41 | 7 |
| 9 | 27 | 42.5 | 8 |
| 10 | 28 | 44 | 9 |
| 11 | 29 | 45 | 10 |
US ↔ JP notes
- Women's US to JP: US women's 8 often ~24.5–25 cm.
- Kids US to JP: use foot cm directly on kids charts.
- Half cm matters in JP—27.0 vs 27.5 cm are different SKUs.
- Import brands may list US, EU, and cm together—read cm row.
Convert US to JP
- 1
Measure foot cm
Round to nearest 0.5 cm for JP charts.
- 2
Find US on chart
Cross-check cm column matches your foot.
- 3
Read JP/cm label
Buy the cm size, not guessed JP number.
- 4
Brand check
Asics JP charts may differ slightly from Nike US mapping.
Brand US vs JP
- Asics Japan: Often true to cm label.
- Onitsuka Tiger: Runs narrow—same cm as US TTS for length.
- Nike US import: US 10 ≈ 28 cm on many boxes.
- Mizuno: Running shoes fit TTS to cm row.
US–JP mistakes
Avoid: Using US minus 18 for JP
Instead: Use cm column.
Avoid: Ignoring 0.5 cm steps
Instead: JP retail uses half centimeters.
Avoid: Women's US men's formula
Instead: Measure foot; women's US 7 ≠ men's US 7 length.
Why US/JP conversion trips people up
Shoe boxes mix US 9, 27 cm, and cm on the same label. Retail staff sometimes round to the nearest whole size, so your friend’s US 9 recommendation may not match your foot length.
Athletic brands and dress shoe makers use different lasts. A dress EU size is not guaranteed to match a running EU size at identical numbers.
Kids and youth scales are separate. Never apply adult conversion math to school-age sizes or junior EU numbers.
Double-check in store
- 1
Stand on the store gauge
Branded metal rulers are in cm—compare to your home measurement.
- 2
Try both neighboring sizes
Half sizes exist for a reason between chart rows.
- 3
Walk 30 seconds
Heel slip or toe pinch means adjust length or width—not brand hop yet.
- 4
Photograph the chart
Save the store’s conversion table if you order online later.
Who runs long or short at this size
- Nike: Often aligns with chart US 9 ↔ 27 cm for athletic styles.
- Adidas: 1/3 EU steps—read 43 1/3 as the 43 row when converting.
- New Balance: Half sizes and wide widths—match cm first.
- Converse Chuck: Runs long—may need 0.5 smaller US than chart athletic size.
Return or exchange workflow
- 1
Keep packaging
Boxes and hang tags speed refunds when size is wrong.
- 2
Try indoors only
Scuffed soles or worn labels may void returns.
- 3
Document fit issue
Photo of pinch point or heel gap helps support.
- 4
Reorder fast movers
Half sizes and popular EU widths sell out during sales.
More us to jp shoe size questions
- Should I size up when between chart rows?
- Non-stretch and leather usually need the larger row; stretch fabrics may take the smaller.
- Do regional sites use different charts?
- Yes—US, EU, and Asia storefronts sometimes grade differently for the same SKU.
- How often to remeasure?
- Feet: twice a year or after weight change; kids: every 2–3 months; bras: after body changes.
- Are marketplace sellers reliable for size?
- Authorized retailers match brand charts; third-party listings may be old season lasts.
- Where to start with feet?
- See how to measure shoe size before converting sizes.
Real-world notes on us to jp shoe size
Charts for us to jp shoe size summarize typical grading—they are not a guarantee for every season or factory run. When a brand refreshes a last or fit block, reviews often mention it before charts update.
Marketplace listings may ship mixed inventory. Compare the size stamped inside the item on delivery with the chart row you used at checkout.
If you are gifting, ask for body or foot measurements in cm instead of guessing their usual tag size. Gift returns are harder when wear signs appear.
Sales associates can measure you in store; take a photo of the store chart if you later order online from the same brand.
Between online orders, remeasure if your weight changed, you had a foot injury, or you switched sock or insole thickness for running.
Teaching kids their cm size helps them shop later—write foot length inside closet door as a reference.
Document the date you measured—repeat after pregnancy, injury, or major weight change so old numbers do not linger in notes apps.
Measurement hygiene
- Stand weight evenly on both feet when tracing outlines.
- Measure twice on different days if you are between rows.
- For clothing, wear the undergarments you will use with the piece.
- For shoes, match sock thickness to intended use.
- Convert using cm first, then read US/UK/EU from the row—never reverse the order.
- Keep a saved note on your phone with your foot cm and bust/waist/hip cm.
- Update kids' sizes every growth spurt—do not buy multiple seasons ahead.
- Check whether reviews mention 'runs small' for the exact model you chose.
- Prefer free-return windows when trying a new brand last.
- Wide feet: try width SKUs before adding length—see 2E vs 4E shoe width.
Common us to jp shoe size errors
Avoid: Using an old size tag from a different brand
Instead: Measure today and match the chart row for this category.
Avoid: Rounding down cm to stay in a smaller letter size
Instead: Round to the row that fits your longer foot or largest body measure.
Avoid: Ignoring half sizes or wide widths
Instead: Half steps and 2E/4E widths fix fit better than guessing.
Avoid: Assuming sales charts match outlet or marketplace stock
Instead: Verify inside label on delivery against the chart you saved.
Extra us to jp shoe size answers
- Online vs in-store size the same?
- Usually yes for current season full-price items; outlets and older stock may differ slightly.
- Do I need to convert if the site shows multi-scale?
- Pick the column you shop in, but confirm your cm or inch measure lands on that row.
- Should athletes size up?
- Running and court sports often need thumb-width toe room—see running shoe size fit.
- Are charts unisex?
- Only when labeled unisex—otherwise use men's and women's tables separately.
- What if half my foot measures between rows?
- Use the longer foot and the larger measure among bust, waist, and hip for clothing.
US to JP FAQ
- US men's 9 in JP?
- About 27 cm on most charts.
- US women's 7 in JP?
- About 24–24.5 cm—measure foot.
- Are JP sizes in cm?
- Often yes—26.5 means 26.5 cm foot length.
- Half size US to JP?
- Adds ~0.5 cm—US 9.5 ≈ 27.5 cm.
- Kids US to JP?
- Use measured foot cm on kids table.
More questions
- US 8 to JP cm?
- About 26 cm men's athletic.
- Do Japanese shoes run small?
- Cm sizing is literal—brand width varies.