Shoe Size Converter
Convert your shoe size between UK, EU, US and foot length in cm.
📏 A guide only — sizing varies by brand, so check the maker's chart for a perfect fit. Free, no sign-up.
📏 Don’t know your size? Measure your foot heel-to-toe in centimetres and enter it in the CM box above.
Shoe size conversion chart
| UK | EU | US (M) | US (W) | cm |
|---|---|---|---|---|
| 3 | 35.5 | 4 | 5 | 21.6 |
| 3.5 | 36 | 4.5 | 5.5 | 22.1 |
| 4 | 37 | 5 | 6 | 22.5 |
| 4.5 | 37.5 | 5.5 | 6.5 | 23.0 |
| 5 | 38 | 6 | 7 | 23.5 |
| 5.5 | 38.5 | 6.5 | 7.5 | 24.0 |
| 6 | 39 | 7 | 8 | 24.4 |
| 6.5 | 40 | 7.5 | 8.5 | 24.9 |
| 7 | 41 | 8 | 9 | 25.4 |
| 7.5 | 41.5 | 8.5 | 9.5 | 25.9 |
| 8 | 42 | 9 | 10 | 26.3 |
| 8.5 | 43 | 9.5 | 10.5 | 26.8 |
| 9 | 43.5 | 10 | 11 | 27.3 |
| 9.5 | 44 | 10.5 | 11.5 | 27.8 |
| 10 | 44.5 | 11 | 12 | 28.3 |
| 10.5 | 45 | 11.5 | 12.5 | 28.8 |
| 11 | 46 | 12 | 13 | 29.2 |
| 11.5 | 46.5 | 12.5 | 13.5 | 29.7 |
| 12 | 47 | 13 | 14 | 30.2 |
Conversions are approximate and vary by brand and last. For the best fit, measure your foot and check the maker's own chart.
About the Shoe Size Converter
The shoe size converter converts between UK, EU, US and centimetre shoe sizes instantly.
How to use the Shoe Size Converter
How to measure your foot
Stand on a sheet of paper with your heel against a wall, mark the tip of your longest toe, and measure the distance in centimetres. Do both feet — they are often slightly different — and use the larger measurement. Feet swell during the day, so measuring in the evening gives the most reliable fit.
UK, EU and US sizing explained
UK and US sizes both count up in steps but start from different points, and US men’s and women’s numbers differ from each other, which is why a straight number swap often goes wrong. EU sizes are based on the length of the shoe in Paris points. Converting from your foot measurement in centimetres avoids the mismatch.
Frequently Asked Questions
How to Convert Shoe Sizes
Shoe sizes vary significantly between the UK, US, EU, and other systems. This free shoe size converter handles men’s and women’s conversions across all major sizing standards. Children’s sizing differs — measure foot length in cm and use a kids-specific chart.
Why shoe sizes differ internationally
Each sizing system evolved independently. UK sizes are based on barleycorn units (1/3 inch), US sizes follow a similar but offset scale, and EU sizes are in Paris points (2/3 cm). There is no universal standard, which is why online shopping internationally requires careful conversion.
Tips for accurate sizing
- Always measure your foot length in centimetres for the most accurate international conversion.
- If you are between sizes, size up — shoes that are slightly large are more comfortable than shoes that are too tight.
- Width fittings (narrow, standard, wide) vary by brand and are not captured in shoe size numbers alone.
- Children's feet grow quickly — measure every 6-8 weeks for growing children.