Free Men's Shoe Size Converter
Convert men's shoe sizes across US, UK, EU, Japan (cm), and China systems. Full size table from US 5 to US 15 with foot measurements. Free.
Exact Conversion Formula & Multipliers
Shoe sizes count different steps from different starting points. US and UK sizes step by ⅓ inch (one barleycorn, 8.47 mm), EU (Paris point) sizes step by ⅔ cm (6.67 mm), and Japanese and Mondopoint sizes are simply the foot length (JP in cm, in 0.5 cm steps). The chart on this page is computed from foot length with the formulas in Wikipedia’s “Shoe size” article: US men’s size = 3 × foot length (in) − 22, UK = US − 1, EU ≈ 1.5 × foot length (cm) + 2, and JP = foot length in cm. Values are rounded to the nearest half size, so neighbouring rows can share a JP or EU value.
Practical Real-World Scenarios
- Buying shoes internationally: sneakers imported from Europe or Asia are labeled in EU sizes, requiring conversion to a familiar US or UK size before ordering online.
- Sports and specialty footwear: soccer boots and running shoes from European brands often only list EU and UK sizing on the box, even when sold in US retail stores.
- Foot-measurement-based fitting: shoe stores that measure foot length in centimeters or the Brannock device's inch scale need to convert that raw measurement into whichever brand's size system is in stock.
Historical & Technical Background
The Brannock Device, patented in 1927 and still standard in American shoe stores, measures foot length and width to determine US shoe size, itself based on a barleycorn-derived English sizing tradition dating to the 14th century where 1 shoe size equaled ⅓ inch (the length of a barleycorn) — the origin of the otherwise arbitrary-seeming ⅓ inch increment. The French Paris point system, using ⅔ cm increments, developed independently in continental Europe, and Mondopoint (direct millimeter length) was introduced by the ISO in the 1970s specifically to cut through the resulting international confusion, though it has never fully replaced the older national systems.
Precision & Accuracy Statement
Shoe sizes are conventions, not physical constants, and no single official standard links the US, UK, EU and Japanese systems. This chart is computed from foot length with the formulas published in the Wikipedia “Shoe size” article: US men = 3 × foot (in) − 22, UK = US men − 1, US women = US men + 1, EU (Paris points) ≈ 1.5 × foot (cm) + 2, and JP/Mondopoint = foot length in cm (rounded to the 0.5 cm steps of JIS S 5037). Only 1 inch = 2.54 cm is an exact constant. Brands and lasts differ by about half a size, so measure your foot and check the brand’s own chart.
How This Converter Works
Men’s shoe sizes differ by region: a US 10 is a UK 9, about an EU 42.5 and a JP 27 (a 27 cm foot). Japan and the Mondopoint system label the foot length directly, so measuring your foot in centimetres is the most reliable starting point. Use the lookup table to find your size in any system.
Common Conversions
| US | UK / AU | EU | JP / Mondopoint (cm) | Foot (cm) |
|---|---|---|---|---|
| 6 | 5 | 37.5 | 23.5 cm | 23.7 cm |
| 7 | 6 | 39 | 24.5 cm | 24.6 cm |
| 8 | 7 | 40 | 25.5 cm | 25.4 cm |
| 9 | 8 | 41.5 | 26 cm | 26.2 cm |
| 10 | 9 | 42.5 | 27 cm | 27.1 cm |
| 11 | 10 | 44 | 28 cm | 27.9 cm |
| 12 | 11 | 45 | 29 cm | 28.8 cm |
| 13 | 12 | 46.5 | 29.5 cm | 29.6 cm |