EU to US Shoe Size Conversion
EU 42 typically maps to US men's 9, but the reverse conversion is approximate because EU rounds on the Paris-point scale. Always confirm with foot length in millimetres — the one axis every system agrees on — and check brand fit notes before buying.
Try the conversion
| Foot length (mm) | US Men | US Women | UK | EU | CM |
|---|---|---|---|---|---|
| 253 | 8 | 9.5 | 7 | 38 | 25.5 |
| 260 | 8.5 | 10 | 7.5 | 39 | 26 |
| 267 | 9.5 | 11 | 8.5 | 40 | 26.5 |
| 273 | 10 | 11.5 | 9 | 41 | 27.5 |
| 280 | 11 | 12.5 | 10 | 42 | 28 |
| 287 | 12 | 13.5 | 11 | 43 | 28.5 |
| 293 | 12.5 | 14 | 11.5 | 44 | 29.5 |
| 300 | 13.5 | 15 | 12.5 | 45 | 30 |
| 307 | 14.5 | 16 | 13.5 | 46 | 30.5 |
Quick conversion table
| EU | US Men | Foot (mm) |
|---|---|---|
| 38 | 8 | 253 |
| 39 | 8.5 | 260 |
| 40 | 9.5 | 267 |
| 41 | 10.5 | 273 |
| 42 | 11 | 280 |
| 43 | 12 | 287 |
| 44 | 12.5 | 293 |
| 45 | 13.5 | 300 |
| 46 | 14 | 307 |
Formula (Layer A): US men ≈ round_to_half((EU / 1.5 × 10 / 25.4 × 3) − 22). See how we calculate for the full methodology.
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What is EU 42 in US shoe size?
EU 42 typically maps to US men's 9 — approximate because EU rounds on the Paris-point scale. Confirm with foot length in mm.
Brand-specific sizing (Layer B)
Generic charts ignore fit — Nike runs small, New Balance runs large, Converse runs very small. For a purchase-ready answer with confidence score and sources: