👟 Shoe Size Converter
Convert shoe sizes between US men’s, women’s and kids’, UK, EU and Japan cm, or find your size from foot length. Formulas and full charts included.
Fits a foot about 26.2 cm · 10.33 in long
Converted with the standard sizing formulas and rounded to the nearest half size. Brands use their own lasts, so the same number can fit up to about half to one size differently — check the brand’s own chart when it has one.
Shoe size chart
| US | UK | EU | Foot (cm) | Foot (in) |
|---|---|---|---|---|
| 5 | 4 | 37 | 22.9 | 9.00 |
| 5.5 | 4.5 | 37.5 | 23.3 | 9.17 |
| 6 | 5 | 38 | 23.7 | 9.33 |
| 6.5 | 5.5 | 38.5 | 24.1 | 9.50 |
| 7 | 6 | 39.5 | 24.6 | 9.67 |
| 7.5 | 6.5 | 40 | 25.0 | 9.83 |
| 8 | 7 | 40.5 | 25.4 | 10.00 |
| 8.5 | 7.5 | 41.5 | 25.8 | 10.17 |
| 9 | 8 | 42 | 26.2 | 10.33 |
| 9.5 | 8.5 | 42.5 | 26.7 | 10.50 |
| 10 | 9 | 43 | 27.1 | 10.67 |
| 10.5 | 9.5 | 44 | 27.5 | 10.83 |
| 11 | 10 | 44.5 | 27.9 | 11.00 |
| 11.5 | 10.5 | 45 | 28.4 | 11.17 |
| 12 | 11 | 45.5 | 28.8 | 11.33 |
| 12.5 | 11.5 | 46.5 | 29.2 | 11.50 |
| 13 | 12 | 47 | 29.6 | 11.67 |
| 13.5 | 12.5 | 47.5 | 30.1 | 11.83 |
| 14 | 13 | 48.5 | 30.5 | 12.00 |
| 14.5 | 13.5 | 49 | 30.9 | 12.17 |
| 15 | 14 | 49.5 | 31.3 | 12.33 |
What Shoe Size Converter Does
This shoe size converter translates a size between US men’s, US women’s, US kids’ (C and Y), UK adult and children’s, EU, and Japanese or Mondopoint sizes. Pick the system you know, enter the size, and every equivalent appears at once, along with the foot length that size is made for. You can also start from a measurement of your own foot.
Instead of copying one brand’s chart, the converter uses the sizing systems themselves: UK and US sizes step in barleycorns of ⅓ inch, EU sizes in Paris points of ⅔ cm, and Mondopoint and Japanese sizes give the foot length directly. The formulas are shown below, so you can see why a US men’s 9 comes out as a UK 8 and an EU 42.
How to Use Shoe Size Converter
- Choose Convert a size, or From foot length
- Pick the size system you know — US men’s, women’s or kids’, UK, EU or cm
- Enter your size, or your measured foot length in cm or inches
- Read the equivalent size in every system
- Check the men’s, women’s or kids’ chart for neighboring sizes
Formula Used by Shoe Size Converter
From size to last length
UK adult = 3L − 25 · US men’s and youth = 3L − 24 · US women’s = 3L − 22.5 · EU = 1.5 × L(cm)
- L
- Length of the last (the form the shoe is built on), in inches — or in cm for EU
- ⅓ inch
- One UK or US size (a barleycorn)
- ⅔ cm
- One EU size (a Paris point)
Worked example
A US men’s size 9.
- L = (9 + 24) ÷ 3 = 11 in = 27.94 cm
- UK = 3 × 11 − 25 = 8
- EU = 1.5 × 27.94 = 41.9
- US women’s = 9 + 1.5 = 10.5
Result: US men’s 9 = UK 8 = EU 42 = US women’s 10½.
From foot length (Brannock scale)
US men’s = 3 × foot length (in) − 22 · last ≈ foot length + ⅔ in
Worked example
A foot measuring 26.5 cm (10.43 in).
- Men’s: 3 × 10.43 − 22 = 9.3
- Women’s: 9.3 + 1.5 = 10.8
- EU: 1.5 × (26.5 + 1.69) = 42.3
Result: Men’s 9½, women’s 11, EU 42½ — sizes are rounded to the nearest half.
Men’s Shoe Sizes
| US | UK | EU | Foot length |
|---|---|---|---|
| 6 | 5 | 38 | 23.7 cm |
| 7 | 6 | 39.5 | 24.6 cm |
| 8 | 7 | 40.5 | 25.4 cm |
| 9 | 8 | 42 | 26.2 cm |
| 10 | 9 | 43 | 27.1 cm |
| 11 | 10 | 44.5 | 27.9 cm |
| 12 | 11 | 45.5 | 28.8 cm |
| 13 | 12 | 47 | 29.6 cm |
Women’s Shoe Sizes
| US | UK | EU | Foot length |
|---|---|---|---|
| 5 | 2.5 | 35 | 21.6 cm |
| 6 | 3.5 | 36 | 22.4 cm |
| 7 | 4.5 | 37.5 | 23.3 cm |
| 8 | 5.5 | 38.5 | 24.1 cm |
| 9 | 6.5 | 40 | 25.0 cm |
| 10 | 7.5 | 41.5 | 25.8 cm |
| 11 | 8.5 | 42.5 | 26.7 cm |
Kids’ Shoe Sizes
| US | UK | EU | Foot length |
|---|---|---|---|
| 4C | 3 (child) | 19 | 11.0 cm |
| 6C | 5 (child) | 21.5 | 12.7 cm |
| 8C | 7 (child) | 24 | 14.4 cm |
| 10C | 9 (child) | 26.5 | 16.1 cm |
| 12C | 11 (child) | 29 | 17.8 cm |
| 1Y | 13 (child) | 32 | 19.5 cm |
| 3Y | 2 | 34.5 | 21.2 cm |
| 5Y | 4 | 37 | 22.9 cm |
| 7Y | 6 | 39.5 | 24.6 cm |
How to Read Your Result
Between two sizes?
If your foot falls between sizes, try the larger one — especially for running shoes and boots worn with thicker socks — and fine-tune with lacing or an insole. Feet swell during the day, so measure in the afternoon or evening, standing up.
Width matters too
Length is only part of the fit. In US sizing, medium width is D for men and B for women, and wide is E or EE for men and D for women. If a shoe pinches at the sides, a wider fitting in the same length usually works better than a longer size.
Brand differences
Each brand builds on its own lasts and publishes its own chart, and even one brand can fit differently between a running shoe and a boot. Use the conversion as a starting point, then check the brand’s chart and any fit notes on the product page.
Limitations & Accuracy Notes
- Conversions follow the standard sizing formulas; individual brand charts can differ by half a size or more.
- Only length is converted; widths are not.
- Specialist footwear, such as cycling or climbing shoes, often runs on its own scale.