Shoe Size Converter (US / UK / EU / CM)
Convert
Pick men's or women's, enter your size in any system (US, UK, EU, or foot length in cm / Mondopoint), and the converter snaps to the closest standard row and shows the equivalent sizes in every other system. The full reference chart stays visible underneath with your match highlighted, so you can also eyeball half-size spreads at a glance. The CM column is true foot length — measure heel-to-longest-toe, not insole.
| US | UK | EU | CM |
|---|---|---|---|
| 5 | 4.5 | 37.5 | 23.0 |
| 5.5 | 5 | 38 | 23.5 |
| 6 | 5.5 | 38.5 | 24.0 |
| 6.5 | 6 | 39 | 24.5 |
| 7 | 6.5 | 40 | 25.0 |
| 7.5 | 7 | 40.5 | 25.5 |
| 8 | 7.5 | 41 | 26.0 |
| 8.5 | 8 | 42 | 26.5 |
| 9 | 8.5 | 42.5 | 27.0 |
| 9.5 | 9 | 43 | 27.5 |
| 10 | 9.5 | 44 | 28.0 |
| 10.5 | 10 | 44.5 | 28.5 |
| 11 | 10.5 | 45 | 29.0 |
| 11.5 | 11 | 45.5 | 29.5 |
| 12 | 11.5 | 46 | 30.0 |
| 13 | 12.5 | 47 | 31.0 |
| 14 | 13.5 | 48 | 32.0 |
| 15 | 14.5 | 49 | 33.0 |
Shoe sizing varies meaningfully by brand and last. Use this chart as a starting point, not gospel — always check the brand's own size guide for borderline fits.
How to use
- Toggle Men or Women at the top.
- Pick the system you know your size in (US / UK / EU / CM) and type the value.
- Read the equivalent sizes in all systems, and find your row highlighted in the chart.
Frequently asked questions
- Why CM is true foot length, not shoe length?
- Mondopoint sizing — the Japanese/Korean and ISO standard — is defined as the actual foot length in mm or cm. Measure standing, heel to the tip of your longest toe. Your shoe last (insole) will usually be 5-15 mm longer to leave wiggle room.
- Why don't sizes line up exactly between brands?
- There is no single global standard. Nike, Adidas, Vans, dress shoes, and European sneakers each use slightly different lasts. This converter shows the closest standardized equivalent — the bracket within which most brands will land, but always check the brand's own size chart for borderline cases.
- How do US Men ↔ US Women convert?
- US Women is 1.5 sizes larger numerically than US Men for the same foot length. So a US Men 8 ≈ US Women 9.5. This converter handles that automatically when you switch the gender toggle.
- What about kids sizes?
- This tool covers adult sizing only (US 4-15 men, 4-12 women). Kids' sizing uses an entirely different scale (US child / youth) with different ranges per region and is best looked up on the brand's own chart.
Related tools
CSS Unit Converter
Convert between px, rem, em, pt, vw, vh, and % using your own base font size and viewport.
JSON ↔ YAML Converter
Convert JSON to YAML or YAML to JSON — pick the indent and copy the result.
Data Size Converter
Convert between bytes, KB, MB, GB, TB — in decimal (1000) or binary (1024).
Roman Numeral Converter
Convert between Arabic numbers and Roman numerals from 1 to 3999.
Number Base Converter
Convert numbers between binary, octal, decimal, and hexadecimal.
Unit Converter
Convert length, weight, temperature, area, volume, speed, and time.