Shoe Size Converter: US, UK, EU, AU & Japan
Convert shoe sizes between US, UK, EU, Australian, and Japanese sizing for women, men, and kids. Includes foot length in centimeters and inches for every size.
Quick Answer
A US women's size 8 is approximately UK 6, EU 39, AU 6.5, and JP 25 (foot length 24.1cm). A US men's size 10 is approximately UK 9.5, EU 44, and AU 9.5 (foot length 27cm). Shoe sizes use a completely different numbering system from clothing sizes, and the exact match can shift by half a size depending on the brand.
Shopping shoes from an overseas brand or trying to make sense of a size chart in a different system? This converter translates shoe sizes across the systems most shoppers run into: US, UK, EU, Australia, and Japan. It covers women's, men's, and kids' shoes, and shows the foot length behind every size so you can measure at home and skip the guesswork.
Shopping for clothes too? Use our Clothing Size Converter for dresses, tops, pants, and kids' clothing, or check your body shape before you plan your next wardrobe purchase.
Size Chart Reference
| US | UK | EU | AU | JP |
|---|---|---|---|---|
| 4 | 2 | 35 | 2.5 | 21 |
| 4.5 | 2.5 | 35 | 3 | 21.5 |
| 5 | 3 | 36 | 3.5 | 22 |
| 5.5 | 3.5 | 36 | 4 | 22.5 |
| 6 | 4 | 37 | 4.5 | 23 |
| 6.5 | 4.5 | 37 | 5 | 23.5 |
| 7 | 5 | 38 | 5.5 | 24 |
| 7.5 | 5.5 | 38 | 6 | 24.5 |
| 8 | 6 | 39 | 6.5 | 25 |
| 8.5 | 6.5 | 39 | 7 | 25.5 |
| 9 | 7 | 40 | 7.5 | 26 |
| 9.5 | 7.5 | 40 | 8 | 26.5 |
| 10 | 8 | 41 | 8.5 | 27 |
| 10.5 | 8.5 | 41 | 9 | 27.5 |
| 11 | 9 | 42 | 9.5 | 28 |
| 11.5 | 9.5 | 42 | 10 | 28.5 |
| 12 | 10 | 43 | 10.5 | 29 |
All conversions happen in your browser. No personal data is collected or stored on our servers.
Common Shoe Size Conversions
Quick answers to the shoe size questions people search for most.
EU 38 in US women's
About a US 6.5 to 7.5. Adidas lists US 6.5; Zappos, Famous Footwear, and New Balance commonly show US 7 to 7.5.
EU 43 in US men's
About a US 9.5 to 10.5. New Balance runs closer to 10 to 11; Adidas and Nike sit closer to US 10.
US 8 women's in EU
About EU 39 to 40. Zappos, Famous Footwear, and Nike show EU 39; Adidas's women's chart shows EU 40.
UK 6 in US women's
US 8 women's. This is a direct, consistent match across Zappos and Famous Footwear.
UK 9 in US men's
US 10 men's. UK men's sizes typically run one full size below US men's.
US 10 men's in UK
About UK 9 to 9.5. Zappos, Famous Footwear, and New Balance list UK 9.5; Adidas also uses 9.5.
EU 40 in US men's
About a US 7 to 8. New Balance shows US 7 to 8; Zappos is closer to 7.5 to 8; Adidas fractional sizing lands around 7 to 8.
US 7 women's in UK
UK 5. Direct match on Zappos and Famous Footwear.
EU 36 in US women's
About a US 5 to 6. Zappos and Famous Footwear show US 5 to 6; Adidas is closer to 5 to 5.5.
US 11 men's in EU
About EU 44 to 45. New Balance shows about 45; Zappos shows 44 to 45; Adidas's fractional sizing lands near 45 1/3.
Women's Shoe Size Chart
Full women's shoe size conversion from US 4 to US 12, with foot length in centimeters and inches from Zappos, cross-checked against New Balance, Adidas, and Nike.
| US | UK | EU | AU | JP (cm) | Foot Length |
|---|---|---|---|---|---|
| 4 | 2 | 35 | 2.5 | 21 | 20.8cm / 8.2" |
| 4.5 | 2.5 | 35 | 3 | 21.5 | 21.3cm / 8.3" |
| 5 | 3 | 36 | 3.5 | 22 | 21.6cm / 8.5" |
| 5.5 | 3.5 | 36 | 4 | 22.5 | 22.2cm / 8.8" |
| 6 | 4 | 37 | 4.5 | 23 | 22.5cm / 8.9" |
| 6.5 | 4.5 | 37 | 5 | 23.5 | 23cm / 9.1" |
| 7 | 5 | 38 | 5.5 | 24 | 23.5cm / 9.3" |
| 7.5 | 5.5 | 38 | 6 | 24.5 | 23.8cm / 9.4" |
| 8 | 6 | 39 | 6.5 | 25 | 24.1cm / 9.5" |
| 8.5 | 6.5 | 39 | 7 | 25.5 | 24.6cm / 9.7" |
| 9 | 7 | 40 | 7.5 | 26 | 25.1cm / 9.9" |
| 9.5 | 7.5 | 40 | 8 | 26.5 | 25.4cm / 10" |
| 10 | 8 | 41 | 8.5 | 27 | 25.9cm / 10.2" |
| 10.5 | 8.5 | 41 | 9 | 27.5 | 26.2cm / 10.3" |
| 11 | 9 | 42 | 9.5 | 28 | 26.7cm / 10.5" |
| 11.5 | 9.5 | 42 | 10 | 28.5 | 27.1cm / 10.7" |
| 12 | 10 | 43 | 10.5 | 29 | 27.6cm / 10.9" |
EU sizes above show the single value most commonly used by Zappos and Famous Footwear. Some brands, including Adidas, list a range or a slightly different whole number for the same US size (for example, US 8 also appears as EU 38-39 on some charts). When in doubt, measure your foot length in centimeters and match it directly.
Men's Shoe Size Chart
Full men's shoe size conversion from US 6 to US 15, with foot length in centimeters and inches from Zappos, cross-checked against Famous Footwear, New Balance, and Adidas.
| US | UK | EU | AU | JP (cm) | Foot Length |
|---|---|---|---|---|---|
| 6 | 5.5 | 39 | 5.5 | 24 | 23.5cm / 9.3" |
| 6.5 | 6 | 40 | 6 | 24.5 | 24.1cm / 9.5" |
| 7 | 6.5 | 40 | 6.5 | 25 | 24.4cm / 9.6" |
| 7.5 | 7 | 41 | 7 | 25.5 | 24.8cm / 9.8" |
| 8 | 7.5 | 41.5 | 7.5 | 26 | 25.4cm / 9.9" |
| 8.5 | 8 | 42 | 8 | 26.5 | 25.7cm / 10.1" |
| 9 | 8.5 | 42.5 | 8.5 | 27 | 26cm / 10.3" |
| 9.5 | 9 | 43 | 9 | 27.5 | 26.7cm / 10.4" |
| 10 | 9.5 | 44 | 9.5 | 28 | 27cm / 10.6" |
| 10.5 | 10 | 44 | 10 | 28.5 | 27.3cm / 10.8" |
| 11 | 10.5 | 45 | 10.5 | 29 | 27.9cm / 10.9" |
| 11.5 | 11 | 45 | 11 | 29.5 | 28.3cm / 11.1" |
| 12 | 11.5 | 45 | 11.5 | 30 | 28.6cm / 11.3" |
| 13 | 12.5 | 46 | 12.5 | 31 | 29.4cm / 11.6" |
| 14 | 13.5 | 47 | 13.5 | 32 | 30.2cm / 11.9" |
| 15 | 14.5 | 49 | 14.5 | 33 | 31cm / 12.2" |
Adidas lists some men's sizes as fractions, such as EU 41 1/3, because its conversion does not land on whole EU numbers. We round to the nearest whole or half EU size used by Zappos and Famous Footwear for easier reading.
Kids' & Toddler Shoe Size Chart
Kids' shoe sizing is grouped by age band rather than a single continuous scale. US sizing resets back to 1 after the little kid range, so we list each group separately. Reliable AU and JP data was not available for kids' sizing, so those columns are not shown here.
Infant / Baby (approx. 0-9 months)
| US | UK | EU | Foot Length |
|---|---|---|---|
| 0 | 0 | 15 | 7.9cm / 3.1" |
| 1 | 0.5 | 16 | 8.9cm / 3.5" |
| 1.5 | 1 | 17 | 9.2cm / 3.6" |
| 2 | 1 | 17 | 9.5cm / 3.7" |
| 2.5 | 1.5 | 18 | 10.2cm / 4" |
| 3 | 2 | 18 | 10.5cm / 4.1" |
Toddler (approx. 9 months-4 years)
| US | UK | EU | Foot Length |
|---|---|---|---|
| 3.5 | 2.5 | 19 | 10.8cm / 4.3" |
| 4 | 3 | 19 | 11.4cm / 4.5" |
| 4.5 | 3.5 | 20 | 11.7cm / 4.6" |
| 5 | 4 | 20 | 12.1cm / 4.8" |
| 5.5 | 4.5 | 21 | 12.7cm / 5" |
| 6 | 5 | 22 | 13cm / 5.1" |
| 6.5 | 5.5 | 22 | 13.3cm / 5.2" |
| 7 | 6 | 23 | 14cm / 5.5" |
| 7.5 | 6.5 | 23 | 14.3cm / 5.6" |
| 8 | 7 | 24 | 14.6cm / 5.7" |
| 8.5 | 7.5 | 25 | 15.2cm / 6" |
| 9 | 8 | 25 | 15.6cm / 6.1" |
| 9.5 | 8.5 | 26 | 15.9cm / 6.3" |
| 10 | 9 | 27 | 16.5cm / 6.5" |
Little Kid (approx. 4-7/8 years)
| US | UK | EU | Foot Length |
|---|---|---|---|
| 10.5 | 9.5 | 27 | 16.8cm / 6.6" |
| 11 | 10 | 28 | 17.1cm / 6.7" |
| 11.5 | 10.5 | 29 | 17.8cm / 7" |
| 12 | 11 | 30 | 18.1cm / 7.1" |
| 12.5 | 11.5 | 30 | 18.4cm / 7.2" |
| 13 | 12 | 31 | 19.1cm / 7.5" |
| 13.5 | 12.5 | 31 | 19.4cm / 7.6" |
| 1 | 13 | 32 | 19.7cm / 7.8" |
| 1.5 | 14 | 33 | 20.3cm / 8" |
| 2 | 1 | 33 | 20.6cm / 8.1" |
| 2.5 | 1.5 | 34 | 21cm / 8.3" |
| 3 | 2 | 34 | 21.6cm / 8.5" |
US sizing restarts at 1 partway through this range (after size 13.5), which is why 1 through 3 appear twice across the little kid and toddler tables. This is standard across US retailers, not a typo.
Big Kid / Youth (approx. 7/8-12 years)
| US | UK | EU | Foot Length |
|---|---|---|---|
| 3.5 | 2.5 | 35 | 21.9cm / 8.6" |
| 4 | 3 | 36 | 22.2cm / 8.7" |
| 4.5 | 3.5 | 36 | 22.9cm / 9" |
| 5 | 4 | 37 | 23.2cm / 9.1" |
| 5.5 | 4.5 | 37 | 23.5cm / 9.3" |
| 6 | 5 | 38 | 24.1cm / 9.5" |
| 6.5 | 5.5 | 38 | 24.4cm / 9.6" |
| 7 | 6 | 39 | 24.8cm / 9.8" |
Age ranges are approximate labels used by retailers, not a strict rule. Kids grow at different rates, so measuring your child's foot length is more reliable than sizing by age alone, especially when buying from a brand you have not used before.
How to Measure Your Feet at Home
All you need is a wall, a sheet of paper, and a pencil. The whole process takes about two minutes per foot.
Get a Sheet of Paper and a Wall
Wear the socks you plan to wear with the shoes. Place a sheet of paper on a hard, flat floor with one edge flush against a wall.
Stand With Your Heel at the Wall
Stand on the paper with your heel touching the wall and your weight distributed evenly, as if you were standing normally, not sitting.
Mark Your Longest Toe
Hold a pencil straight up and down and mark the tip of your longest toe on the paper. For most people this is the big toe, but for some it is the second toe.
Measure Heel to Mark
Measure the straight-line distance from the wall edge to your pencil mark, in centimeters or inches.
Repeat for Both Feet
Measure both feet separately. It is normal for one foot to be up to half a size larger. Use the measurement from your larger foot for both shoes.
Measure in the Afternoon or Evening
Feet swell throughout the day, so a measurement taken in the morning can run small. Measuring in the afternoon or evening gives you the closest read on your largest size.
Match Your Length to the Chart
Compare your foot length in centimeters to the chart above for your audience and region. Add roughly 0.5 to 1cm of extra room in the toe box for comfort, or more for boots and hiking shoes.
Measurement Tips
- Measure both feet. It is common for one foot to be slightly larger, and you should shop for the larger one.
- Stand fully upright, not seated. Sitting changes how your foot flattens and can undermeasure your length.
- Leave 0.5 to 1cm of space in the toe box (about a thumb's width) for everyday shoes, and 1 to 1.5cm for boots or activities where your foot swells.
- If your brand offers widths, measure the widest part of your foot too, not just the length.
US Women's to US Men's Shoe Size Conversion
US men's and women's shoe sizes share the same numbering scale but are not interchangeable. The dominant offset used by major athletic brands, including Nike, New Balance, and Adidas, is 1.5 sizes: a men's 8 lines up with a women's 9.5. Zappos's own sizing FAQ uses a slightly wider approximation of about 2 sizes, putting a men's 7 closer to a women's 9.
Because both figures come from major retailers and neither is universally correct, treat the offset as a range rather than an exact formula, and confirm with the specific brand's chart when converting a unisex or men's style into a women's size.
Why Shoe Sizes Vary by Brand
Every shoe is built on a last, the foot-shaped form a shoemaker shapes the shoe around. Brands do not share lasts, so a labeled US 8 from one company is not guaranteed to have the same internal length as a US 8 from another. Adidas even lists some sizes as fractions, like 41 1/3, because its EU conversion formula does not land on a whole number.
Japan's sizing system sidesteps a lot of this by sizing shoes directly to foot length in centimeters, similar to the Mondopoint system (ISO 9407:2019) used for ski boots and some military and international footwear. A Mondopoint 270 or a Japanese size 27 both fit a 27.0cm foot, with no gender-specific baseline built in.
Treat every chart on this page, including the one built into the converter above, as a starting point. Measure your foot length using the guide above, compare it to a brand's specific size chart before you buy, and read reviews that mention fit when you can.
Complete Your Shopping Toolkit
Shoe sizing is one part of shopping with confidence. Browse all our free fashion tools or start with one of these.
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Ring Size Calculator
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Outfit Generator
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AU to US Size Guide
A deeper look at Australian sizing quirks for clothing and shoes
Frequently Asked Questions
What is EU 38 in US women's shoe size?
EU 38 is approximately a US women's 6.5 to 7.5. Adidas's chart lists it as closer to US 6.5, while Zappos, Famous Footwear, and New Balance commonly show US 7 to 7.5 for EU 38. The exact match depends on the brand's last, so treat this as a starting range rather than one fixed number.
What is EU 43 in US men's shoe size?
EU 43 is approximately a US men's 9.5 to 10.5. New Balance runs closer to US 10 to 11 for this size, while Adidas and Nike mappings sit closer to US 10. Use our converter above and check the specific brand's chart if you are between sizes.
What is US 8 women's in EU?
A US women's 8 is approximately EU 39 to 40. Zappos, Famous Footwear, and Nike list it as EU 39, while Adidas's women's size chart lists it as EU 40. This half-size-to-whole-size gap is common because EU sizing increments in smaller steps than US half sizes.
What is UK 6 in US women's shoe size?
UK 6 converts to a US women's 8. This is a direct, consistent match across Zappos and Famous Footwear, since UK and US women's shoe sizes share a numbering scale offset by exactly 2.
How do I convert US shoe size to UK?
For women's shoes, subtract 2 from your US size to get the UK size (US 8 = UK 6). For men's shoes, subtract 1 from your US size (US 10 = UK 9). Both offsets are consistent across major US retailers, though individual brands can shift by half a size.
What is the formula to convert EU shoe size to US?
For women, subtract roughly 30 to 31 from the EU shoe size to estimate the US size (EU 38 is about a US 7 to 7.5). EU shoe sizes are built on the Paris point system, where each whole size equals 6.67mm of internal shoe length, so the exact US equivalent can shift by half a size depending on the brand's last.
Are men's and women's shoe sizes the same numbering system?
No. US men's and women's shoe sizes share a scale but are offset. The most common offset used by Nike, New Balance, and Adidas is 1.5 sizes, so a US men's 8 is about a US women's 9.5. Zappos's own sizing FAQ uses a wider approximation of about 2 sizes (men's 7 to women's 9). UK sizing is shared between men's and women's without an offset, which is why it is often used as a reference point for cross-gender conversions.
How many centimeters is a US women's size 8 shoe?
A US women's size 8 corresponds to a foot length of about 24.1cm (9.5 inches), based on Zappos's published foot-length charts. New Balance and Adidas list slightly different internal lengths for the same labeled size because they add different amounts of room beyond the foot, so treat this as an approximation.
What is Mondopoint shoe sizing?
Mondopoint (ISO 9407:2019) sizes shoes by the actual length of your foot in millimeters, so a Mondopoint 270 fits a 27.0cm foot. It has no gender-specific baselines and is most common in ski boots and some military and international footwear. Japan's shoe sizing follows the same logic, sizing shoes directly by foot length in centimeters.
Why do shoe sizes vary so much between brands?
Every shoe brand designs around its own last, the foot-shaped mold a shoe is built on, so a labeled US 8 from one brand is not guaranteed to match the internal length of a US 8 from another. Adidas even lists some sizes as fractions, like 41 1/3, because its EU conversion does not land on whole numbers. Always check a brand's specific size chart before buying, especially for boots or narrow-fitting styles.
How do I measure my foot size at home?
Stand on a piece of paper against a wall with your heel touching the wall, mark your longest toe with a pencil held straight up, then measure the distance from the wall to the mark. Measure both feet in the afternoon, when feet are at their largest, and use the bigger measurement. Compare the result in centimeters to the charts above.
How much room should I leave in the toe box?
Most sizing guides, including Adidas and Clarks, recommend about 0.5 to 1cm of extra space beyond your measured foot length, roughly a thumb's width. Boots and hiking shoes often need slightly more, around 1 to 1.5cm, to allow for thicker socks and foot swelling during activity.