What's your shoe size, everywhere?
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A shoe size converter translates your size between US, UK and EU and across 450+ brands, because a Nike 10 is not an Adidas 10. Enter your size or your measured foot lengthand see your size everywhere, for men's, women's and kids' shoes.
Updated July 2026 · reviewed by the Sizely team
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Shoe size conversion chart
Standard US, UK and EU shoe sizes by foot length. For a specific brand, use the converter above.
Men's shoe sizes
| US | UK | EU | Foot (cm) |
|---|---|---|---|
| 6 | 5.5 | 39 | 24.5 |
| 7 | 6.5 | 40 | 25 |
| 8 | 7.5 | 41 | 25.5 |
| 9 | 8.5 | 42 | 26 |
| 10 | 9.5 | 43 | 27 |
| 11 | 10.5 | 44 | 28 |
| 12 | 11.5 | 45 | 29 |
| 13 | 12.5 | 46 | 30 |
Women's shoe sizes
| US | UK | EU | Foot (cm) |
|---|---|---|---|
| 5 | 3 | 35 | 21 |
| 6 | 4 | 36 | 22 |
| 7.5 | 5.5 | 38 | 23.5 |
| 8.5 | 6.5 | 39 | 24.5 |
| 9 | 7 | 40 | 25 |
| 9.5 | 7.5 | 41 | 25.5 |
| 10 | 8 | 42 | 26 |
| 10.5 | 8.5 | 43 | 27 |
Brand to brand conversion
Find your ideal shoe size across 450+ brands with our shoe size conversion tool.
Shoe type conversion
Sports shoes are different from high heels. Our tool is designed to find the perfect fit.
International conversion
Looking for EU, UK or US size? We simplify the international conversion for you.
How to use the shoe size converter
Our shoe size converter translates your size across 450+ brands such as Adidas, Nike, Converse and more, in US, UK and EU sizing. Here is how to find your size in a few seconds:
- 1Pick who it's for. Choose Men's, Women's, Boys' or Girls' shoes so the tool uses the right size scale.
- 2Choose the brand you know your size in. e.g. converting Nike to Adidas, Converse to Vans or Puma to New Balance. Type to search — every brand shows with its logo.
- 3Choose your size system. US, UK, EU or JP. A system is offered only where the brand actually publishes it, so you never pick a size the brand doesn't print.
- 4Enter your size. For example US 10.5 or EU 44, or switch to "by foot length" and enter your measured foot length in cm or inches (the most reliable cross-brand key).
- 5Pick the brand to convert to. Answers come only from brands verified against their own official size chart.
- 6Read your result. Your size in the target brand, matched by foot length against the brand's own published chart, in every system that brand prints.
Want this on your own store? The same engine powers Fit Finder — a widget your shoppers use right on your product pages.
Shoe size conversion FAQ
What is shoe size conversion and how does it work?
Shoe size conversion translates your shoe size from one international sizing standard to another, or from one brand's sizing to another. It's useful when buying shoes from a different country or brand, so you get a perfect fit. For instance, converting a US men's size 10 in Adidas to a Nike size means understanding the sizing differences between those brands. Our tool does this for you: select your current size and brand, then convert it to your desired size and brand.
How can I use the shoe size conversion chart?
Our shoe size conversion chart helps you compare sizes across regions like US, UK and European shoe sizes. Find your size in, say, US men's sizes, and read across to your European or UK size. For the full reference tables, see our international shoe size conversion chart.
Why are European shoe sizes different from UK sizes?
European and UK sizes use different measurement systems. European sizes use a metric system based on the length of the foot in centimeters (Paris points). UK sizes are based on the length of the last used to make the shoe, measured in barleycorns (one-third of an inch). Understanding this matters when converting from a European shoe size to a UK shoe size.
Can I convert women's shoe sizes to men's and vice versa?
Yes. There's typically a 1.5-size difference between men's and women's shoes in US sizing, so a women's 8.5 is roughly a men's 7. This helps when shopping unisex styles. Toggle between men's and women's in the converter above, or use our dedicated women's to men's shoe size chart and men's to women's chart.
How important are foot length and foot width for the right size?
Both are crucial. Shoes that are too narrow or too wide are uncomfortable even when the length is right. Measure your foot length from heel to longest toe and your width at the broadest part. Foot length in cm is the most reliable way to match sizes across brands, and it's what our converter uses. See the shoe width chart for width sizing.
How do size conversions help when buying shoes online?
Size conversions are essential for buying from international or unfamiliar brands, so the shoe fits regardless of the sizing standard used. Our tool covers foot length in inches and centimeters plus EU, US and UK sizes, for shoppers worldwide.
How do I measure my foot correctly with a tape measure?
Stand on a sheet of paper at the end of the day (feet are largest then), mark from your heel to the tip of your longest toe, and measure the line with a tape measure in inches or centimeters. Then enter that foot length in the converter. For a full guide, see our shoe size conversion chart.
What should I consider when converting sizes for sports shoes?
Consider both the style and the brand's specific sizing. Sports shoes can fit differently by purpose. A running shoe and a basketball shoe from the same brand may size differently due to design and function, so factor the model in, not just the brand.
Does the converter work for different shoe types like heels or casual shoes?
Yes. Heels, casual shoes, sports shoes and boots all convert the same way, because the converter matches your foot length against the brand's own published size chart. Fit still varies by model and material, so check the brand's model notes when in doubt.
Is there a difference in shoe sizing between European countries?
Sizing can vary slightly across European countries. There is a general European standard, but brands cut sizes differently by market. Because the converter reads each brand's own size chart rather than one universal EU scale, those brand-level differences show up in the answers.
What brands does the shoe size converter cover?
The converter covers 450+ brands across men's and women's, with 370+ verified against each brand's official size chart, plus kids' lines. That includes Nike, Adidas, Puma, New Balance, Converse, Vans, Crocs and many more, each with brand-specific sizing.
How do I make sure the converted size is the perfect fit?
Consider both the length and width of your foot. The tool factors in the brand's sizing, shoe type and material, but for the best result measure your foot length with a tape measure. Sizes vary slightly between styles and brands, so also check the specific brand's size chart and customer reviews for fit tips.
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