Shoe size chart: US, UK, EU, Japan and cm conversions for women, men and kids

A shoe size chart converts one country's shoe size into another's. The number that means the same thing everywhere is foot length. A 24.5 cm (9.6 in) foot is a US women's 8, a US men's 7, a UK 6 and an EU 39 to 40, depending on the brand.

Below are full conversion tables for women, men and kids (toddler, little kids and big kids), how to measure your foot at home, and where the big brands disagree. The last part is for Shopify shoe stores.

Women's shoe size conversion chart

EU and Japan columns follow Nike. Foot length is the measured foot, heel to longest toe, and matches both Nike's women's chart and Clarks within a millimetre or two.

UK to US shoe size for women

The table uses UK = US minus 2. That matches Wikipedia's formulas for the standard US women's scale, and it lines up with Clarks, whose UK 5 is EU 38 for a 237 mm foot, the same as our US 7 row. Nike subtracts 2.5, so its US 7 is a UK 4.5. adidas subtracts 1.5, so its US 7 is a UK 5.5. A UK shopper ordering from a US chart can be a full size out depending on the brand.

Korea uses the same numbers as Japan in millimetres (24 cm is 240), so a Japan column covers both.

Men's shoe size chart: US to EU shoe size and UK to US

All columns except UK follow Nike's men's chart, including foot length. Rows 14 and 15 use Nike's published foot lengths in inches.

For men, UK = US minus 1 is the rule in Wikipedia's formulas, and Clarks' foot lengths per UK size match it. Nike follows it from US 7 up, but below that subtracts only 0.5 (its US 6 is a UK 5.5). adidas uses US minus 0.5, so a US men's 9 is a UK 8.5 there.

Clarks gives UK 8 as EU 42 for a 263 mm foot, where Nike gives a 26.2 cm foot EU 42½. Half an EU size between brands is normal.

Shoe size chart men to women

Two rules are in use, and both appear on official charts:

Wikipedia calls the +1.5 version the "common" scale and +1 the "standard" (FIA) scale. If you sell unisex sneakers, print both US columns on the chart and say which rule the brand uses.

Kids shoe size chart: toddler, little kids and big kids

US kids' sizes run in two series: C (child) from 1C to 13½C, then Y (youth) from 1Y to 7Y. UK kids' sizes restart at 1 after 13½. US, UK and EU follow Nike's kids' charts; foot length comes from Clarks, which publishes it in millimetres.

Some things to know before you use it:

• US to UK for kids is half a size. On Nike's kids' charts the US size is the UK size plus 0.5, until the UK series restarts.
• The groups overlap. Nike's own charts cover babies and toddlers from 1C to 10C (ages 0 to 3), little kids from 8C to 3Y (3 to 7) and big kids from 1Y to 7Y (7 to 12). The split above is the common one, but a 9C fits the same foot in either section.
• Kids' sizes to women's. Big kids' Y sizes line up with US men's sizes at Nike (7Y and men's 7 are both EU 40), so add 1.5 for women's, which makes 5Y a women's 6½.
• Kids shoe size chart in cm. Japan and Korea label shoes by foot length (Mondopoint), so use the cm column. Nike's own cm labels for toddler sizes sit up to 1.5 cm below the Clarks foot lengths (3C is labelled 9 cm against a 10.5 cm foot), so for babies check the brand.
• EU varies by half a size. Clarks gives UK 2½ as EU 18 and UK 13 as EU 32, where Nike has 18½ and 31½.

For kids' clothing sizes by age and height (baby, toddler and youth), see our kids size chart.

Where brands disagree: Nike, adidas, Clarks, Birkenstock

The tables above are a fair middle. These are the differences we found when we compared brands:

• adidas EU sizes come in thirds. Its US men's chart runs 38, 38⅔, 39⅓, 40, so a US men's 6 is EU 38⅔ where Nike gives 38½. adidas lists foot length for every size (24.6 cm for a men's 7, 24.5 cm at Nike), so the feet are the same and only the label moves.
• Women's sizes split the brands by a full EU size. Because adidas uses men's +1 for women and Nike uses +1.5, a US women's 8 is EU 39 at Nike and EU 40 at adidas.
• Nike disagrees with itself on foot length. Its men's chart lists a men's 5½ (women's 7 on that page) at 9 3/16 in, while the women's chart lists a women's 7 at 9 5/16 in. That is about 3 mm, so treat any foot length column as accurate to a few millimetres.
• Birkenstock sells whole EU sizes only. On its official New Zealand size guide, each EU size covers two US half sizes (women's EU 38 is US 7 to 7½) and a foot length range such as 241 to 245 mm. Narrow and regular have the same length and differ only in width.
• The cm on the box is not your foot. Nike says the CM size on boxes and labels is different from foot length. In our tables the label runs from about the same as the foot at small sizes to 1.7 cm longer at a men's 15.

The rule that saves arguments is that labels drift by half a size between brands, but foot length does not.

How to measure foot length at home (shoe size chart cm)

You need a sheet of paper, a pen, a ruler with millimetres and someone to help. The steps below follow Nike's and Clarks' instructions.

1. Tape the paper to a hard floor, against a wall if you can, so it does not slip.
2. Stand on it with your heel against the wall and your weight on both feet.
3. Have someone mark the tip of your longest toe with the pen held straight down. The longest toe is not always the big toe, as Clarks points out.
4. Measure from the heel edge to the mark in millimetres.
5. Repeat with the other foot and use the longer one.
6. Find the closest value in the foot length column. If you are between two sizes, Nike recommends sizing up.

Measure at the end of the day, when feet are largest; both adidas and Birkenstock give this advice. If you only have a centimetre figure and need an EU size, Wikipedia gives a rule of thumb. EU size is about 1.5 times the foot length in cm, plus 2. A 26.2 cm foot comes out at 41.3, close to Nike's 42½ and Clarks' 42.

Shoe width basics

Width labels differ even more than length labels:

• US widths use letters. Per Wikipedia, B is the default for women and D for men, with E and 2E (EE) as wide and AA as narrow.
• Nike says its wide shoes have about 1/4 in (6.35 mm) more girth in the toe box than regular ones, and extra wide about 1/2 in.
• Clarks (UK) uses different letters for each group. D is standard and E wide for women, G standard and H wide for men, and E to H for kids from narrow to extra wide.
• Birkenstock has narrow and regular, marked on the footbed with a filled or outlined foot symbol.

A D is standard for a Clarks woman and wide for a US woman, so never show a width letter without saying whose system it is.

For Shopify shoe stores: sizes that don't come back

We build Shopify apps, including a size chart app, and this is what we would set up first in a shoe store.

Name size variants with the system

Shopify allows up to three options and 2,048 variants per product, so a full run of half sizes and two widths fits. Name the option and put the system in the value:

Keep the format the same across products, because filters and AI shopping agents read variant names as data. We used the same pattern in our ring size chart guide.

Show each shopper their own system, plus foot length

A shopper in Lyon wants EU first, one in Manchester wants UK, one in Osaka wants cm. Shopify themes can read the country selected on the storefront from the Liquid localization.country object, which is how a size chart can put the right column first. Add a foot length column in cm and inches next to the size picker, and the measuring steps above. Our clothing size conversion chart guide covers the same idea for apparel.

If you sell one brand, copy that brand's chart. If you sell many, label each chart with its brand, because adidas and Nike rows do not match.

Plainfee Size ChartsSize charts that show every shopper their own country's sizes, with how-to-measure steps in 31 languages.See how it works

Plainfee Size Charts has ready-made women's, men's and kids' shoe charts with a foot length column. It shows each shopper their own country's sizes first, in 44 countries, and inches first in the US with one tap to switch to centimetres. The free plan covers 3 live charts, and Pro is a flat $14.99 a month with no fees per order. Kiwi Size Chart has a fit recommender, which we do not offer; our list of Shopify size chart apps compares it and others. If your brand charts live in a spreadsheet, see how to build a size chart from Excel.

Reduce shoe size returns

• Stock half sizes, or say you don't. A shopper between 8 and 9 needs to know whether 8½ exists before ordering both.
• Say how the shoe fits. "Runs half a size small" next to the size picker beats a perfect conversion table.
• Give width. If a style comes only in regular width, say so on the product page.
• Set return rules. Shopify's return rules let you set a return window, return shipping and restocking fees, and mark products as final sale. If you charge for returns, our comparison of Shopify return fees shows the options.

A quick checklist before you publish a shoe

• Variant values name the system and gender scale (US W 7, not 7).
• The chart shows foot length in cm and inches.
• Shoppers see their own size system first.
• Unisex styles show both US men's and women's sizes, with the brand's rule.
• Width and "runs small or large" notes are on the product page.
• Measuring steps are next to the size picker.
• You checked the chart on a phone.

A US 7, a UK 5 and an EU 38 are three names for one foot length. Give shoppers that length, their own name for it and a way to measure, and most size questions end before they become returns.

Frequently asked questions