Size Conversion Result

9
US (US)
42.5
EU (EU)
Men's Shoe Sizes

All International Equivalent Sizes

RegionSizeFull Name
US 9 US
UK 8 UK
EU 42.5 EU
How to Use This Conversion
  • Size 9 in US (US) equals size 42.5 in EU (EU)
  • This conversion applies to Men's Shoe Sizes
  • See all equivalent sizes in the table above
  • Always check brand-specific size charts when possible
Important Notes
  • Sizes may vary between brands and manufacturers
  • These are general conversion guidelines
  • Always try on clothes when possible
  • Check return policies for online purchases

Full Size Conversion Charts

9 US = 42.5 EU — here’s the full picture.

EU to US (Men)

EUUS
3910.4
4011.9
4113.4
4214.9
4316.4
4417.9
4519.4

EU to CM (Mondopoint)

EUCM
3926
4026.7
4127.3
4228
4328.7
4429.3
4530
EU 9 ≈ 6 cm foot length

How Sizing Systems Work

US Sizing (Brannock)

Based on inches. US 42.5 ≈ 110.5 cm from heel to toe.

EU Sizing (Paris Point)

Each size = 6.67 mm. EU 9 = 9 × 6.67 mm ≈ 6 cm inner length.

Brand & Width Variations

9 US ≠ Same Fit Everywhere

  • Nike/Adidas: run 0.5 size small → try US 43
  • Clarks: true to size → US 42.5
  • Vans: narrow → consider wide (E/EE)
Width Matters! US: D (standard), E/EE (wide). EU: rarely specified.

Measure Your Foot at Home

  1. Stand on paper, heel against wall
  2. Mark longest toe
  3. Measure in cm → EU = cm × 1.5
  4. Add 1–1.5 cm for comfort

EU 9? Your foot = 6 cm

Frequently Asked Questions

No — EU 9 = UK 8

~2.4 inches (inner). Foot: ~2.2 in.

~US 44–44.5 women’s

Online Shopping Checklist

  • Check return policy (free returns?)
  • Read reviews for “runs small/large”
  • Find brand size chart on product page
  • Size up for thick socks or sports
About This Conversion

Convert Men's Shoe Sizes size 9 from United States (US) to Europe (EU) sizing. Size 9 in US equals size 42.5 in EU. See all equivalent international sizes.

Category:Men's Shoe Sizes
From:9 (US)
To:42.5 (EU)
Regions Available:3