US Shoe Size to Inches
Do not divide a printed JP/CM size by 2.54 to claim foot length in inches; compare the maker’s Foot Length chart.
Label comparison, not a foot-length chart. JP/CM is a printed shoe size label; it is not the length of your foot measured with a ruler. For a measured foot length in cm or inches, open the footwear maker's separate Foot Length or Heel-to-toe chart to choose a size. The US/UK/EU references here are approximate and vary by brand.
| JP/CM shoe label | US Men | US Women | UK | EU |
|---|---|---|---|---|
| 22 | 4 | 5.5 | 3.5 | 36 |
| 22.5 | 4.5 | 6 | 4 | 36.5 |
| 23 | 5 | 6.5 | 4.5 | 37.5 |
| 23.5 | 5.5 | 7 | 5 | 38 |
| 24 | 6 | 7.5 | 5.5 | 38.5 |
| 24.5 | 6.5 | 8 | 6 | 39 |
| 25 | 7 | 8.5 | 6.5 | 40 |
| 25.5 | 7.5 | 9 | 7 | 40.5 |
| 26 | 8 | 9.5 | 7.5 | 41 |
| 26.5 | 8.5 | 10 | 8 | 42 |
| 27 | 9 | 10.5 | 8.5 | 42.5 |
| 27.5 | 9.5 | 11 | 9 | 43 |
| 28 | 10 | 11.5 | 9.5 | 44 |
| 28.5 | 10.5 | 12 | 10 | 44.5 |
| 29 | 11 | 12.5 | 10.5 | 45 |
| 29.5 | 11.5 | 13 | 11 | 45.5 |
| 30 | 12 | 13.5 | 11.5 | 46 |
A shoe-size label cannot determine foot length in inches
The shared table compares approximate US and JP/CM printed labels; it does not contain measured heel-to-toe foot lengths. Dividing a JP/CM shoe-label number by 2.54 would only convert the unit of a printed number, not the wearer's foot length.
If the manufacturer lists the actual Foot Length in centimeters for that US size, divide that measured value by 2.54 to express it in inches. Use the appropriate men’s or women’s product chart and confirm fit notes.
How this guidance is checked
These sources support the measurement method and help check real-world variation. They are not presented as one universal brand-size table.
- ISO 19407:2023 — Footwear — Sizing — Conversion of sizing systems — International Organization for Standardization (ISO). Measurement-first footwear methodology and the limitation that cross-system conversions are guidance rather than guaranteed fit.
- Men's Footwear Size Chart — Nike. Manufacturer cross-check showing that foot length, labeled CM values, width, and brand-specific sizing conventions are distinct concepts.
- Footwear Size Guide — adidas. Manufacturer cross-check across heel-to-toe length and US, UK, EU, and Japan-labeled footwear sizes.
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