Inches to US Shoe Size
Select adidas or Nike to compare measured foot inches with its category-specific size rows and confirm product fit.
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 |
Measured inches: use the brand's physical foot-length chart
Measure your longer foot in inches. Select adidas or Nike and the men's or women's category. For adidas, the calculator converts inches using 1 inch = 2.54 cm and checks adidas Heel-toe rows. For Nike, it compares against the published Nike Foot Length (in) fractions, with approximate centimeter equivalents shown for clarity.
If your measurement lies between source rows, you see two adjacent published size options rather than an invented half step. Nike recommends sizing up between chart rows; adidas advises checking your fit preference. Measurements beyond the selected maker and category's actual published foot-length range are not extrapolated.
Keep printed size labels separate from foot measurements
The generic reference table below compares shoe-box US, UK, EU and JP/CM labels. A JP/CM size marking is not your heel-to-toe foot length; dividing the marking by 2.54 does not produce a measured foot length in inches.
Nike men's and women's foot-length sources are independent. The Nike men's chart's US Women's conversion entry is not substituted for the Nike women's Foot Length chart. Check the intended model's width and fit before selecting a final size.
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.
Frequently asked questions
Is the Nike foot length an exact centimeter number?
Nike's source lists foot lengths in fractional inches. The calculator retains those values for the lookup and displays centimeter equivalents rounded to about 0.1 cm, not a universal size conversion.
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