Everyday Tools
Shoe Size Converter
Enter a shoe size in any system — US men's, US women's, UK, EU, or foot length in centimetres — and see the equivalent size in every other system.
Calculation inputs
Based on a standard adult size chart. Brands vary by up to half a size, so check the maker's own chart when you can.
Results
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Complete the fields and select Calculate to show results here.
About this calculator
This converter translates an adult shoe size between US men's, US women's, UK, EU, and foot length in centimetres. It helps when you shop from an overseas retailer, buy a unisex style, or simply want to know what your size means in another system.
How the calculation works
- US women's = US men's + 1.5
- UK = US men's − 1
- EU = US men's + 33
- Foot length (cm) = US men's + 18
Notes and assumptions
There is no single legal standard linking the systems, so every chart is an approximation; the offsets here match common retailer charts for adult shoes.
Measure your foot in the evening, standing, and use the longer foot when the two differ.
How it works in plain English
Shoe sizing systems grew up separately: US and UK sizes count in barleycorns (a third of an inch), while EU "Paris points" are two-thirds of a centimetre. Because each step is a fixed length, adult sizes in the different systems run roughly parallel, and a common retail chart links them with simple offsets from US men's sizing.
The tool first converts whatever you enter into a US men's size, then adds the offset for each other system: US women's is 1.5 sizes larger, UK is one size smaller, EU is about 33 higher, and the matching foot length in centimetres is about 18 more than the US men's number. Shoe sizes are then rounded to the nearest half size, since that is how shoes are sold.
These offsets match widely used retailer charts but are still approximations. Brands cut their lasts differently, and width is a separate measurement altogether, so use the result as a starting point and confirm against the brand's own chart when it publishes one.
The formula
- US women's = US men's + 1.5
- UK = US men's − 1
- EU ≈ US men's + 33
- Foot length (cm) ≈ US men's + 18
Worked example
Say you wear a US men's 9 and want to order trainers from a European shop that lists only EU sizes.
Enter 9, choose US Men's as the starting system and EU as the target. The tool shows EU 42. The full table also lists US women's 10.5, UK 8, and a foot length of about 27 cm.
If you are between sizes — perhaps you measured a 27.3 cm foot — most fitters suggest going up half a size rather than down, particularly for running shoes where your foot swells over a long run.
Adult shoe size chart
| US Men's | US Women's | UK | EU | Foot length (cm) |
|---|---|---|---|---|
| 6 | 7.5 | 5 | 39 | 24 |
| 7 | 8.5 | 6 | 40 | 25 |
| 8 | 9.5 | 7 | 41 | 26 |
| 9 | 10.5 | 8 | 42 | 27 |
| 10 | 11.5 | 9 | 43 | 28 |
| 11 | 12.5 | 10 | 44 | 29 |
| 12 | 13.5 | 11 | 45 | 30 |
| 13 | 14.5 | 12 | 46 | 31 |
Source: typical adult conversion chart used by major US and European footwear retailers; individual brands can vary by up to half a size.
Frequently asked questions
How do I measure my foot length?
Stand on a sheet of paper with your heel against a wall, mark the tip of your longest toe, and measure from the wall to the mark in centimetres. Do it in the evening when feet are largest, measure both feet, and use the longer one.
Why is a women's size 1.5 larger than a men's size?
US women's and men's sizes start counting from different zero points, so the same foot length carries a number about 1.5 higher on the women's scale. A US men's 8 and a US women's 9.5 are designed for roughly the same foot length.
Are UK and US sizes the same?
No. For men, a UK size is usually about one size smaller than the US number for the same shoe. Some brands use a half-size gap instead, which is why checking the brand's own chart is worthwhile when you are between sizes.
Does this work for children's shoes?
No — children's sizes use their own scale that resets partway through, so the adult offsets do not apply. The tool accepts US men's 4 to 16 and the equivalent sizes in other systems.
Why do I wear different sizes in different brands?
Each brand builds shoes on its own last, the foot-shaped form a shoe is made around, and styles such as boots or running shoes are cut differently. The size number is a guide, so fit and the brand's chart should have the final say.