Shoe Size Converter
Convert shoe sizes between US, UK, EU, JP, KR, BR, MX, AU and foot length. Instant results for men, women, and kids.
Denne kalkulatoren er ikke oversatt til Norsk bokmål ennå.
Vi viser foreløpig versjonen på Engelsk mens vi fullfører oversettelsen.
Foot length (cm)
27.5 cm
Foot length (in)
10.8 in
Conversion results
UK
8.5
EU
42.5
JP
27.5
KR
275
BR
40
MX
27.5
AU
8.5
How to measure your foot
- Place a piece of paper on a hard floor against a wall.
- Stand on the paper with your heel against the wall.
- Mark the longest point of your foot (usually the big toe or second toe).
- Measure the distance from the wall to the mark in centimeters.
- Measure both feet and use the larger measurement.
Men's shoe size chart
| Foot (cm) | Foot (in) | US | UK | EU | JP | KR | BR | MX | AU |
|---|---|---|---|---|---|---|---|---|---|
| 22.0 | 8.7 | 3.5 | 3 | 35.5 | 22 | 220 | 33 | — | 3 |
| 22.5 | 8.9 | 4 | 3.5 | 36 | 22.5 | 225 | 34 | — | 3.5 |
| 23.0 | 9.1 | 4.5 | 4 | 36.5 | 23 | 230 | 34 | — | 4 |
| 23.5 | 9.3 | 5 | 4.5 | 37.5 | 23.5 | 235 | 35 | — | 4.5 |
| 24.0 | 9.4 | 5.5 | 5 | 38 | 24 | 240 | 36 | — | 5 |
| 24.5 | 9.6 | 6 | 5.5 | 38.5 | 24.5 | 245 | 36 | — | 5.5 |
| 25.0 | 9.8 | 6.5 | 6 | 39 | 25 | 250 | 37 | 25 | 6 |
| 25.5 | 10.0 | 7 | 6.5 | 40 | 25.5 | 255 | 38 | 25.5 | 6.5 |
| 26.0 | 10.2 | 7.5 | 7 | 40.5 | 26 | 260 | 38 | 26 | 7 |
| 26.5 | 10.4 | 8 | 7.5 | 41 | 26.5 | 265 | 39 | 26.5 | 7.5 |
| 27.0 | 10.6 | 8.5 | 8 | 42 | 27 | 270 | 40 | 27 | 8 |
| 27.5 | 10.8 | 9 | 8.5 | 42.5 | 27.5 | 275 | 40 | 27.5 | 8.5 |
| 28.0 | 11.0 | 9.5 | 9 | 43 | 28 | 280 | 41 | 28 | 9 |
| 28.5 | 11.2 | 10 | 9.5 | 44 | 28.5 | 285 | 42 | 28.5 | 9.5 |
| 29.0 | 11.4 | 10.5 | 10 | 44.5 | 29 | 290 | 42 | 29 | 10 |
| 29.5 | 11.6 | 11 | 10.5 | 45 | 29.5 | 295 | 43 | 29.5 | 10.5 |
| 30.0 | 11.8 | 11.5 | 11 | 45.5 | 30 | 300 | 44 | 30 | 11 |
| 30.5 | 12.0 | 12 | 11.5 | 46 | 30.5 | 305 | 44 | 30.5 | 11.5 |
| 31.0 | 12.2 | 13 | 12 | 47 | 31 | 310 | 45 | 31 | 12 |
| 31.5 | 12.4 | 14 | 13 | 48.5 | 31.5 | 315 | 46 | 31.5 | 13 |
| 32.0 | 12.6 | 15 | 14 | 49.5 | 32 | 320 | 47 | 32 | 14 |
Shoe size converter and chart. US, UK, EU, JP, KR and cm sizes from one foot length.
The same foot gets a different number in every country: a 27 cm foot is a US men's 8.5, a UK 8, and an EU 42. This converter maps your foot length in centimeters to all eight systems and keeps men's, women's, and kids' charts separate.
What Is a Shoe Size Converter?
There is no worldwide standard for shoe sizes, so the same foot picks up a different number in every country. A foot measuring 27 cm is a US men's 8.5, a UK 8, and an EU 42 — one shoe, three labels — which is exactly why the numbers stamped inside an imported pair rarely agree.
Each system was built separately on its own unit. The US and UK scales count in barleycorns (one-third of an inch per size) but start from different points, so they land about half a size apart. Europe counts in Paris points, roughly 6.67 mm (two-thirds of a centimeter) per size. Japan and Korea skip the abstraction and state the foot directly: a JP 27 is a 27 cm foot, and a KR 270 is that same length in millimeters. Brazil, Mexico, and Australia each borrow one of these with their own offset.
This tool converts by pinning every size to one shared reference — foot length in centimeters — and reading the equivalents back out across US, UK, EU, JP, KR, BR, MX, and AU. It keeps men's, women's, and kids' charts apart because the US, UK, and AU scales split by gender: at that same 27 cm foot, a men's US 8.5 is a women's US 10, a gap of about 1.5 sizes. Rather than round everything through one formula, it cross-references manufacturer-grade lookup tables so the half sizes fall where a real shoe box puts them. EU, JP, and KR numbers stay unisex — they describe the foot, not the wearer.
How to Use the Shoe Size Converter
Start with your foot length — it is the one measurement every sizing system agrees on, so it settles the guesswork before you convert.
1. Choose the category — men, women, or kids — at the top. The US, UK, and AU scales number each one differently, so the wrong category shifts the result by about 1.5 sizes; EU, JP, and KR are unisex.
2. Pick what you are converting from. Select cm or inches to enter a measured foot length, or select a system (US, UK, EU, JP, KR, BR, MX, AU) if you already know a size that fits you well.
3. Enter the value — a foot length such as 27.0 cm, or a known size such as US 8.5 or EU 42.
4. Read the results. The converter shows your foot length in centimeters and inches, then the matching size in every other system at once, so you copy whichever one the store uses.
Two things to watch when you read the output: if your foot lands between two rows, size up — a roomy shoe takes an insole, a tight one causes blisters — and always cross-check the brand's own size chart, because lasts differ enough that even a correct conversion can run half a size off.
Shoe Size Conversion Chart: US, UK, EU and JP by Foot Length
| Category | Foot length (cm) | US | UK | EU | JP |
|---|---|---|---|---|---|
| Men | 22.0 | 3.5 | 3 | 35.5 | 22 |
| Men | 23.0 | 4.5 | 4 | 36.5 | 23 |
| Men | 24.0 | 5.5 | 5 | 38 | 24 |
| Men | 25.0 | 6.5 | 6 | 39 | 25 |
| Men | 26.0 | 7.5 | 7 | 40.5 | 26 |
| Men | 27.0 | 8.5 | 8 | 42 | 27 |
| Men | 28.0 | 9.5 | 9 | 43 | 28 |
| Men | 29.0 | 10.5 | 10 | 44.5 | 29 |
| Men | 30.0 | 11.5 | 11 | 45.5 | 30 |
| Men | 31.0 | 13 | 12 | 47 | 31 |
| Men | 32.0 | 15 | 14 | 49.5 | 32 |
| Women | 21.0 | 4 | 2 | 34 | 21 |
| Women | 22.0 | 5 | 3 | 35 | 22 |
| Women | 23.0 | 6 | 4 | 36 | 23 |
| Women | 24.0 | 7.5 | 5.5 | 38 | 24 |
| Women | 25.0 | 8 | 6 | 39 | 25 |
| Women | 26.0 | 9 | 7 | 40 | 26 |
| Women | 27.0 | 10 | 8 | 41.5 | 27 |
| Women | 28.0 | 11 | 9 | 43 | 28 |
| Women | 29.0 | 12 | 10 | 44.5 | 29 |
| Kids | 13.0 | 4.5 | 4 | 21 | 13 |
| Kids | 14.0 | 5.5 | 5 | 22.5 | 14 |
| Kids | 15.0 | 7 | 6 | 24 | 15 |
| Kids | 16.0 | 8 | 7 | 25 | 16 |
| Kids | 17.0 | 9 | 8 | 26 | 17 |
| Kids | 18.0 | 10 | 9 | 27 | 18 |
| Kids | 19.0 | 11 | 10 | 29 | 19 |
Shoe Size Conversion Examples
Convert an EU 42 to a US men's size
You found trainers listed only in EU sizes and you normally wear a US men's 8.5. A men's EU 42 is a US 8.5, a UK 8, and a JP 27 — all built for a foot about 27.0 cm long, so the EU 42 is exactly your size and you can order it with confidence. If that same shoe were instead sold as an EU 42.5, it would jump to a US men's 9 (UK 8.5, foot 27.5 cm), half a size larger.
See every equivalent of a men's US 9
A men's US 9 maps to a UK 8.5, an EU 42.5, and a JP 27.5, and it fits a foot around 27.5 cm long. Two patterns here are worth memorizing: the UK number sits half a size below the US number (8.5 versus 9), and the EU number is roughly your US size plus 33.5 (9 + 33.5 = 42.5). Those two shortcuts let you sanity-check almost any men's conversion in your head before you buy.
Measure your foot, then read the size (28.5 cm)
Trace your foot against a wall and suppose it measures 28.5 cm. Reading straight across the men's chart, that is a US 10, a UK 9.5, an EU 44, and a JP 28.5 (Japan simply states the foot length). Foot length in centimeters is the one measurement every system agrees on, so measuring first and converting second beats guessing from a number you think you 'usually' wear.
Same 27 cm foot: men's versus women's sizing
This is the trap behind most wrong online orders. A 27.0 cm foot is a men's US 8.5 but a women's US 10 — one foot, two numbers 1.5 sizes apart — because the US, UK, and AU scales split by gender. Curiously, the UK label lands on 8 in both charts, while the EU number shifts a little (men's 42 versus women's 41.5). Always set the men, women, or kids category before you trust the US number.
A women's US 9 is not a men's US 9
The same digit means different feet on the two scales. A women's US 9 fits a 26.0 cm foot (UK 7, EU 40), while a men's US 9 fits a 27.5 cm foot (UK 8.5, EU 42.5) — a 1.5 cm gap for the identical number. When a listing says only 'US 9' with no gender attached, confirm whether it is a men's or women's line, or convert through your foot length in cm, before you commit to the order.
Common Shoe Size Conversion Mistakes
- Assuming your usual number carries over. Sizes are not portable — a US men's 9 is an EU 42.5 and a UK 8.5, so reusing the same digit across systems is the quickest way to order the wrong shoe. Convert through foot length instead.
- Mixing up men's and women's sizes. On US, UK, and AU labels the two scales sit about 1.5 sizes apart: a men's US 8.5 and a women's US 10 fit the same 27 cm foot. Converting a women's size as if it were a men's leaves you a size and a half too big.
- Treating US and UK as the same number. They run roughly half a size to a size apart — a US men's 10 is a UK 9.5 — and for women the gap widens to about two sizes, so a US women's 8 is a UK 6. British and US size labels are not interchangeable.
- Trusting one conversion across every brand. Standard charts get you close, but lasts differ: Nike often runs about half a size small, New Balance runs wide, and dress shoes fit differently from trainers. Check the brand's own chart before you commit.
- Measuring your foot in the morning. Feet swell through the day and can gain up to half a size by evening. Measure late in the day, in the socks you will actually wear, and use your larger foot.
- Rounding half sizes blindly. Some EU brands only make whole sizes, so a foot that converts to EU 42.5 may need EU 43. When a system skips your half size, round up rather than squeezing into the smaller one.
Frequently Asked Questions About Shoe Size Conversion
What is the difference between US and UK shoe sizes?
US and UK sizes are close but not identical. For men, US sizes run about half a size to a size larger than UK — a US men's 10 is a UK 9.5. For women the gap is wider, roughly two sizes: a US women's 8 is a UK 6. Both use barleycorn increments (one-third of an inch per size) but start from different reference points, because the US scale was adapted from the older UK one.
Are men's and women's shoe sizes the same?
No. In the US, UK, and AU systems, men's and women's sizes use separate scales about 1.5 sizes apart: a men's US 8.5 and a women's US 10 are built for the same 27 cm foot, though the men's version usually sits on a wider last. In the EU, JP, KR, BR, and MX systems sizing is unisex — the number is the foot length, so a men's EU 42 and a women's EU 42 are identical.
What is my EU size if I wear a US 9?
A US men's 9 is about an EU 42.5, and a US women's 9 is about an EU 40. The EU scale is unisex, so your EU number works for any shoe — round up to the next whole size if the brand skips half sizes.
What is the most common men's shoe size in the US?
The most common US men's shoe size is around 10 to 10.5, based on podiatry and retail data (APMA and industry surveys) — not size 9, which is often repeated but sits below the real average. A US men's 10 matches a 28.5 cm foot (EU 44, UK 9.5), and a US 10.5 matches about 29 cm (EU 44.5, UK 10). Average sizes have crept upward over the decades as populations have grown taller.
How do I measure my foot size at home?
Place a sheet of paper against a wall on a hard floor, stand with your heel to the wall, and mark the tip of your longest toe. Measure from the wall to that mark in centimeters — that is your foot length. Measure both feet in the evening and use the larger one.
Why do shoe sizes vary between brands?
Because no authority enforces one sizing standard, every maker builds on its own last — the foot-shaped mold a shoe is formed around. Lasts differ in length, volume, and width, which is why Nike tends to run about half a size small, New Balance runs wide, and an Italian dress shoe can feel narrower than a trainer in the same number. Foot length in centimeters plus the brand's own chart beats trusting a single number.
What is Mondopoint and how is it different from other shoe sizes?
Mondopoint (ISO 9407) states both foot length and width in millimeters — written like 270/100, meaning a 270 mm length and 100 mm width. Because it captures width too, it is the most precise system, and it is the standard for military boots, ski boots, and skates. It never caught on for everyday shoes because shoppers are used to their local numbers.
How do kids' shoe sizes work compared to adult sizes?
In the US, kids' sizes run from 0 (newborn) up to 13, then restart at 1 for youth sizes — so a youth 1 is the next size after a kids' 13 and is larger, which trips up many parents. Youth sizes bridge into adult numbering. In the EU system, kids simply use smaller numbers on the same scale (about EU 16 to EU 39) before merging into the sizes adults use.
Can I convert my shoe size from cm to any sizing system?
Yes. Foot length in centimeters is the universal reference, so every system can be read from it. A JP size is the length itself (JP 27 = 27 cm) and a KR size is the length in millimeters (KR 270 = 27 cm). Enter cm or inches and the converter fills in all eight systems at once.
Is this shoe size converter free to use?
Yes, it is free and needs no sign-up. Enter a foot length or a size you already know and it returns the equivalent across US, UK, EU, JP, KR, BR, MX, and AU, with separate charts for men, women, and kids.
How accurate is the conversion, and can I order straight from it?
The conversions follow foot-length standards (ISO/TS 19407) and major brand charts, so they place you within about half a size. Whether the shoe actually fits still depends on the last, so check the specific brand's chart, read fit reviews, and when you are between sizes choose the larger one. Treat foot length in centimeters as your anchor and the converted number as a starting point.