A free shoe size converter between US men's and women's, UK, European and Japanese sizes, with a full chart.
Convert a shoe size between US men's, US women's, UK, European and Japanese sizes.
Your numbers
Pick the system your size is in, then type it. Half sizes like 9.5 work.
Your result
Fill in the fields above to see your result.
Embed this tool on your site
Paste the code into any page: WordPress, Webflow, Squarespace, Ghost or plain HTML. It's free with the credit under it, which links back to navid.me.
This free shoe size converter turns a shoe size from one country into the others: US men's and women's, UK, European, Japanese and Mondopoint.
Pick the system your size is in, type it, and the others appear with a full chart.
I built it because the same shoe can be labeled 42, 8.5 and 9.5 depending on where you buy it. This converts through the foot length each size stands for, the one measure every system shares.
Here's how the systems relate, a worked example, and a chart to keep.
TL;DRKey takeaways
What is a shoe size converter?
A shoe size converter changes a shoe size between countries' systems. It turns your size into the foot length it stands for, then into each other system.
How to use the shoe size converter
You need a size you know and the system it's in.
The foot length behind it shows in the line under the result.
A worked example
Here's the example the calculator loads when you press Try an example: a European 42.
EU 42 stands for a foot of (42 − 2) ÷ 1.5 = 26.7 cm, or 10.5 inches.
US men's: 3 × 10.5 − 22 = 9.5. US women's: 10.5. UK: 8.5. Japan: 26.5.
- US women
- 8
- UK
- 6
- EU
- 39
- Foot length
- 24.6 cm
- US women
- 9
- UK
- 7
- EU
- 40
- Foot length
- 25.4 cm
- US women
- 10
- UK
- 8
- EU
- 41.5
- Foot length
- 26.2 cm
- US women
- 11
- UK
- 9
- EU
- 42.5
- Foot length
- 27.1 cm
- US women
- 12
- UK
- 10
- EU
- 44
- Foot length
- 27.9 cm
- US women
- 13
- UK
- 11
- EU
- 45
- Foot length
- 28.8 cm
Which countries use which system
The systems split by region and sometimes by sex.
The US and Canada
Separate men's and women's scales, about a size apart.
The UK, Ireland and much of the Commonwealth
One scale for adults, about 1 size below US men's.
Continental Europe
Paris points, each 2/3 of a cm, the same for men and women.
Japan, China and Korea
The foot length in cm or mm.
Mistakes to avoid
These are the ways a converted size lands wrong.
- Converting a women's size with a men's chart
- Treating UK and US sizes as the same
- Rounding down between 2 sizes
- Trusting the conversion over the brand's own chart
To start from your foot instead, the shoe size calculator measures it.
Who is the shoe size converter for?
It's for anyone buying shoes from another country, and these tools help around it.
- Shoe size calculator – for your size from your foot length
- Ring size converter – for ring sizes between countries
- Currency converter – for the price in your money
- Card fees abroad calculator – for what your card adds abroad
- Discount calculator – for the price after a sale
Convert through the foot length, and check the brand before you buy.
Plan your money with your AI
Take your numbers further in
Shoe Size Converter FAQs
Questions about the shoe size converter? Here's what to know.
A shoe size converter changes a shoe size between countries' systems.
This free one converts between US men's and women's, UK, European, Japanese and Mondopoint sizes.
About a US men's 9.5 and a US women's 10.5.
Brands differ, so check their chart.
About a European 42.5, and a UK 9.
Some brands sell it as 43 or 44.
Add about 1 for US men's and about 2 for US women's.
A UK 8 is about a US men's 9.
Take about 1 off a US women's size for the US men's.
A women's 10 is about a men's 9.
Yes, European sizes use the same scale for both.
Only the US splits them.
They're the foot length in cm.
A European 42 is about a Japanese 26.5.
Each brand sets its own sizes from its own lasts.
Converting through foot length is the fairest common measure.
Yes, it's free with no sign-up.
It runs in your browser.
I did.
I'm Navid Moazzez, and I made the shoe size converter as one of my free tools on navid.me.
More about me.
Navid Moazzez
AI business strategist & AI OS builder
Navid Moazzez helps creators and founders master AI and build their own AI Operating System (AI OS) to automate their business and life.
Navid.me is reader-supported. When you buy through links on this site, I may earn an affiliate commission. Learn more.
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