Shoe Size Converter

Pick men's, women's or kids', enter a size in US, UK, EU, Japanese centimeters or Korean millimeters, and the other four systems fill in from the matching chart row.

What is the Shoe Size Converter?

Shoe sizing was never standardized across countries, so conversion means looking up a chart rather than applying a formula. This tool holds three separate tables, one each for men, women and kids, and every row pairs a US size with its UK, EU, Japanese and Korean equivalents. Enter a size in any of those five systems and it finds the closest row, then shows all five numbers together. The full chart stays printed below the results so you can see the sizes on either side of yours.

Key Features

• Separate men's, women's and kids' charts behind three tabs
• Five systems side by side: US, UK, EU, Japan and Korea
• Japanese sizes in centimeters and Korean sizes in millimeters
• Results snap to a real chart row rather than an invented decimal
• The complete size chart stays visible beneath the result cards

Common Use Cases

• Ordering sneakers from a Japanese or Korean site that lists only centimeters
• Checking an EU number before buying boots from a European retailer
• Buying kids' shoes abroad where the numbering restarts on its own scale
• Translating a UK size on a resale listing into the US equivalent

How to Use the Shoe Size Converter

1. Choose the Men, Women or Kids tab first, because each one uses a different chart.
2. Type the size you already know into the Size field, in half steps if you need them.
3. Set From System to US, UK, EU, Japan (cm) or Korea (mm) so it matches that number.
4. Read the five result cards, with the US card highlighted as the chart's anchor column.
5. Scroll to the chart underneath to see the neighboring sizes above and below yours.

Tips for Best Results

• Measure your foot in centimeters and match the Japan column; brand-to-brand variation makes the numbers alone unreliable.
• The men's chart puts US 9 next to UK 8.5, while the women's chart pairs US 9 with UK 7.
• EU numbers come from Paris points, where one point is two thirds of a centimeter.
• A size beyond a chart's range snaps to its closest row, so read the chart before ordering.

Why Use WiserWork's Shoe Size Converter?

Sizing charts on retail sites are usually an image of a table, buried behind a tab, and specific to one brand. This page shows all five systems at once and prints the underlying chart, so you see your size in context instead of a lone converted number. The tables are already in the page, so nothing you enter is sent anywhere.

Who Uses the Shoe Size Converter?

Online shoppers ordering from overseas storefronts, travelers buying shoes in a country whose labels they cannot read, and parents working out kids' numbering that runs on a different scale again. Resellers and vintage sellers use it to describe a pair in whichever system their buyers expect.

Frequently Asked Questions

Which size systems does the converter cover?

US, UK, EU, Japan in centimeters and Korea in millimeters, shown together as five result cards. The Korean figure is the Japanese centimeter length written in millimeters.

Are men's and women's sizes really different?

Yes, and the tool keeps separate charts for them. In the men's chart US 9 sits at EU 42.5; in the women's chart US 9 sits at EU 40, so the same number describes two different feet.

Why do US and UK numbers differ?

Both trace back to the same barleycorn scale of one third of an inch per size, but the two countries count from different starting points. Here the men's chart shows US 9 against UK 8.5, and the women's chart shows US 9 against UK 7.

What is a Paris point?

It is the unit behind EU sizing: two thirds of a centimeter, or one and a half sizes per centimeter of foot length. That is why EU numbers climb faster than US ones and land on halves.

What is the most reliable way to get the right size?

Measure the longest part of your foot in centimeters, late in the day when feet are largest, and compare it against the Japan column. Variation between brands is often wider than the gap between neighboring sizes.

Do the kids' sizes cover toddlers?

No. The kids' chart runs from US 1 to US 6 in whole sizes, which is the older child and youth range. Infant and toddler scales are numbered separately and are not included here.

Why did my typed size change slightly?

Every result comes from a real chart row. The tool matches your entry to the nearest row rather than inventing an in-between size that no manufacturer actually makes.

Can I enter half sizes?

Yes. The Size field steps in halves, and the men's and women's charts are built on half sizes throughout. The kids' chart uses whole sizes only.

Should I size up for wide feet?

Width is a separate measurement and these charts only handle length. Many brands offer width fittings, which is usually a better answer than buying a longer shoe.

How far do the charts go?

Men's runs US 6 to US 12, women's US 5 to US 10, and kids' US 1 to US 6. Anything outside those ranges is matched to the nearest listed row.

International shoe numbering is a historical accident rather than a system, so the practical move is to know your foot length in centimeters and keep this five-column view open while you shop.