Convert US Men (us_men) to UK (uk) instantly. Men US shoe size to UK size conversion.
| Unit | Name | Value |
|---|---|---|
| us_women | US Women | — |
| uk | UK | — |
| eu | EU | — |
| cm | CM (foot length) | — |
⚠ Shoe sizes vary by brand and foot shape. Always try on shoes or check brand-specific size guides.
Full size range — sizes are approximate and vary by brand
| US Men | UK | Reference |
|---|---|---|
| 3 | 2.5 | EU 35 / 21.6 cm foot |
| 3.5 | 3 | EU 35.5 / 22.2 cm foot |
| 4 | 3.5 | EU 36 / 22.5 cm foot |
| 4.5 | 4 | EU 37 / 23.0 cm foot |
| 5 | 4.5 | EU 37.5 / 23.5 cm foot |
| 5.5 | 5 | EU 38 / 23.8 cm foot |
| 6 | 5.5 | EU 38.5 / 24.1 cm foot |
| 6.5 | 6 | EU 39 / 24.4 cm foot |
| 7 | 6.5 | EU 40 / 24.8 cm foot |
| 7.5 | 7 | EU 40.5 / 25.1 cm foot |
| 8 | 7.5 | EU 41 / 25.4 cm foot |
| 8.5 | 8 | EU 42 / 25.7 cm foot |
| 9 | 8.5 | EU 42.5 / 26.0 cm foot |
| 9.5 | 9 | EU 43 / 26.7 cm foot |
| 10 | 9.5 | EU 44 / 27.0 cm foot |
| 10.5 | 10 | EU 44.5 / 27.3 cm foot |
| 11 | 10.5 | EU 45 / 27.9 cm foot |
| 11.5 | 11 | EU 45.5 / 28.3 cm foot |
| 12 | 11.5 | EU 46 / 28.6 cm foot |
| 13 | 12.5 | EU 47 / 29.4 cm foot |
EU size works as a universal reference — same number for men and women.
For US sizes, women's is 1.5 sizes larger than men's for the same foot.
For the most reliable fit across brands, measure foot length in cm.
Converts US Men size to UK when buying shoes from international retailers.
Finds the right UK shoe size when shopping abroad.
Converts a known shoe size to the recipient's local size for online purchases.
Provides {fn} to {tn} size conversions for international stock.
Converts sizes when buying limited-edition sneakers from international resellers.
Converts children's shoe sizes when buying abroad or from international brands.
US men's shoe sizes are based on the barleycorn system (1/3 inch per size) with a zero point of 7⅔ inches. US men's sizes run approximately 6–16. US men's size 9 = UK 8.5 = EU 42.5 = 26.0 cm foot length.
US shoe sizes are gender-differentiated: the same foot length corresponds to different numbers for men and women. US women's sizes are approximately 1.5 sizes higher than US men's for the same foot length.
Interesting fact: Despite being the world's largest footwear market, the US has never officially standardized shoe sizes. Sizes are manufacturer-defined, which is why sizes vary between brands — a Nike 10 may fit differently than an Adidas 10.
UK shoe sizes use a numbering system where size 0 corresponds to a child's foot of 4 inches (101.6 mm), with each size increment being ⅓ inch (8.47 mm). Adult UK sizes start around 3. The system predates metrication and remains the standard in Britain.
UK adult sizes run roughly 1–14 for men and 2–10 for women. UK sizes are approximately 0.5 lower than US men's sizes (UK 9 = US 9.5) and about 2 lower than women's US sizes (UK 6 = US 8). UK children's sizes continue into adults without a break.
Interesting fact: The Mondopoint international shoe sizing standard (ISO 9407) attempted to replace all regional systems with foot length in millimeters, but despite adoption by NATO for military footwear, it has not displaced local systems in retail.
Shoe sizes are not standardized internationally. EU sizes use Paris points (⅔ cm), US sizes use barleycorns (⅓ inch), and UK uses a similar scale with a different offset. US men's and women's sizes differ by 1.5 sizes for the same foot. EU sizing is gender-neutral. The most reliable approach: measure foot length in cm and consult brand-specific size charts.
Always treat size conversions as a starting point — sizes vary significantly between brands and shoe styles.