Convert shoe sizes between US, UK, EU and centimeter measurements for men and women — enter one size and get the closest match in every system.
Enter a shoe size and click Convert to see the equivalent in every system
This free shoe size converter solves a problem every online shoe shopper eventually runs into: the US, UK, and most of continental Europe each number shoe sizes differently, and none of them line up with a simple offset you can do in your head. Enter a size you already know — in US, UK, EU, or centimeters — for either men's or women's sizing, and this shoe size calculator instantly returns the matching size in all four systems from a standard published size chart.
Behind the scenes, the calculator isn't running a mathematical formula — it's looking up your entered value in a table of real, standard shoe sizes. Each table row pairs a US size with its corresponding UK, EU, and CM (foot length) size, built separately for men's and women's charts. You pick a gender, choose which system your number belongs to, and the converter finds the closest matching row and displays the whole thing at once.
This shoe size converter is built for online shoppers ordering from an international retailer, travelers who need to buy shoes while abroad, gift-buyers who only know a recipient's home-country size, and anyone comparing a size chart from a manufacturer that uses a different sizing system than the one they're used to. It's equally handy for resellers, thrift and vintage shoe buyers, and customer-service staff who field sizing questions from customers in different countries.
Buying shoes from an international retailer, comparing sizes across brands, or checking a size chart from a manufacturer in another country all require converting between these systems, and a size that's off by even one full number can mean a shoe that pinches or slides. Because sizing can also vary slightly by brand and shoe style, using the centimeter (foot length) measurement alongside your usual size is often the most reliable way to get a good fit when shopping across borders.
Why this converter is a lookup table, not a math formula — and what that means for your result
Shoe sizes across countries were standardized independently and don't share a linear mathematical relationship, so this tool references fixed size-chart rows instead of computing a conversion.
Men's and women's shoes use different numbering conventions for the same physical foot length, so the calculator keeps two independent tables rather than one shared scale.
When your number falls between two standard sizes, the calculator returns whichever chart row is numerically nearest in your selected column and marks it as approximate.
From entering a known size to reading the equivalent across every system
Select the gender toggle that matches the shoe you're sizing — men's and women's charts use different numbering for the same foot length.
Choose US, UK, EU, or CM from the Size Type dropdown, matching the system of the number you already know.
Type the size (or foot length in centimeters) into the Size Value field.
The calculator searches the selected chart for the row closest to your entered value in your chosen size type.
See the matching US, UK, EU, and CM sizes together, and check for the approximation note if your input wasn't an exact standard size.
Two real lookups using the calculator's own built-in size charts
You know your US men's shoe size is 10 and want the UK, EU, and CM equivalents before ordering from a UK-based retailer.
You measured a foot and estimated a US women's size of 9.2, which isn't a standard listed size.
Explanation: When your number matches a standard chart entry exactly, as in Scenario 1, the conversion is precise. When it falls between two standard sizes, as in Scenario 2, the calculator does the sensible thing — it shows you the nearest real, standard size rather than guessing at a value that doesn't actually exist in retail sizing, and it tells you it did so.
What the four result values mean, and why shoe sizing isn't a perfectly precise science
US / UK / EU: These are the labeled sizes you'd see printed inside a shoe or on a box in each region's standard numbering system, taken directly from the matched chart row.
CM: This is the typical foot length, in centimeters, associated with that size — the closest thing to a universal, brand-independent reference point in the chart.
The approximation note: If it appears, your entered number fell between two standard sizes rather than matching one exactly. The result shown is the single closest standard size, not an interpolated or rounded average.
Shoe sizing isn't a perfectly precise science even at the manufacturer level — two pairs of shoes labeled the same size, from two different brands, can measure differently depending on the last (the foot-shaped mold) used to build them, the shoe style, and the materials. Treat this converter's result as a reliable, standardized starting point, not a guarantee of fit for every brand and style.
This calculator provides a general size-chart reference and is not a substitute for trying shoes on or checking a specific brand's own size chart. Fit can vary by shoe style, materials, and manufacturer even at the same labeled size.
Where converting between shoe sizing systems is genuinely useful
Convert your known size before ordering from a UK, EU, or US-based online shoe store.
Quickly translate your home-country size into the local system at a shop abroad.
Check a family member's or friend's size against your own chart when buying a gift.
Convert a size mentioned by a partner or friend from an unfamiliar sizing system.
Resellers and secondhand shoppers can quickly check whether a listed size matches their own.
Athletes buying imported running, football, or climbing shoes can convert to the brand's labeled system.
People who've moved countries can translate their old size into the local one at a new store.
Store associates can quickly answer sizing questions from customers using an unfamiliar system.
Cross-reference an unfamiliar brand's printed chart against a standard reference before ordering.
Turn a measured foot length in centimeters into an estimated shoe size to start shopping.
Double-check size equivalents when exchanging a pair for a different labeled size system.
Note your equivalent sizes across all four systems once, and reuse them for future purchases.
What this shoe size converter does well, and where it can't replace trying shoes on
The exact standard size chart values built into this converter
| Men's Sizes | |||
|---|---|---|---|
| US | UK | EU | CM |
| 6 | 5.5 | 39 | 24 |
| 6.5 | 6 | 39.5 | 24.5 |
| 7 | 6.5 | 40 | 25 |
| 7.5 | 7 | 40.5 | 25.5 |
| 8 | 7.5 | 41 | 26 |
| 8.5 | 8 | 42 | 26.5 |
| 9 | 8.5 | 42.5 | 27 |
| 9.5 | 9 | 43 | 27.5 |
| 10 | 9.5 | 44 | 28 |
| 10.5 | 10 | 44.5 | 28.5 |
| 11 | 10.5 | 45 | 29 |
| 11.5 | 11 | 45.5 | 29.5 |
| 12 | 11.5 | 46 | 30 |
| 13 | 12.5 | 47.5 | 31 |
| 14 | 13.5 | 48.5 | 32 |
| Women's Sizes | |||
|---|---|---|---|
| US | UK | EU | CM |
| 5 | 2.5 | 35.5 | 22 |
| 5.5 | 3 | 36 | 22.5 |
| 6 | 3.5 | 36.5 | 23 |
| 6.5 | 4 | 37 | 23.5 |
| 7 | 4.5 | 37.5 | 24 |
| 7.5 | 5 | 38 | 24.5 |
| 8 | 5.5 | 38.5 | 25 |
| 8.5 | 6 | 39 | 25.5 |
| 9 | 6.5 | 40 | 26 |
| 9.5 | 7 | 40.5 | 26.5 |
| 10 | 7.5 | 41 | 27 |
| 10.5 | 8 | 42 | 27.5 |
| 11 | 8.5 | 42.5 | 28 |
Summary: This shoe size converter looks up your entered US, UK, EU, or CM size in standard men's and women's size charts and returns the closest matching row across all four systems — a fast, free starting point for international shoe shopping. Pair it with the Clothing Size Converter for a complete international sizing check before you order.
Common questions about shoe size conversion
Independent references to complement this calculator's size charts
Explore other conversion and utility tools