International Shoe Size Chart & Conversion Guide

Convert between US, UK, and EU shoe sizes instantly. Accurate measurement charts for men, women, and children — plus brand-specific fit advice.

👟 Instant Size Converter 📏 How to Measure Your Feet 👦 Kids Sizing Included
Quick Answer

US and UK shoe sizes differ by roughly 1 size for women (US 8 = UK 6) and 0.5 size for men (US 10 = UK 9.5). EU sizes are larger numbers — a US women's 8 is about EU 38–39. Use the converter below for an exact match, or scroll down for full charts.

Shoe Size Converter

Enter any size to see all international equivalents instantly.

Select your gender, system, and size above to see conversions.

Women's Shoe Size Chart

Full conversion table for women's shoes across US, UK, and EU sizing systems. Sizes are approximate — always verify with the brand's own chart when ordering online.

USUKEUFoot LengthCM
5335–368.5″21.6
5.53.5368.75″22.2
6436–378.875″22.5
6.54.5379″22.9
7 Popular537–389.25″23.5
7.55.5389.375″23.8
8 Popular638–399.5″24.1
8.56.5399.75″24.6
9739–409.875″25.1
9.57.54010″25.4
10840–4110.25″26.0
10.58.54110.375″26.4
11941–4210.5″26.7
121042–4310.875″27.6

Men's Shoe Size Chart

Men's UK sizes typically run 0.5–1 size below US. European sizes use the Paris Point system (each size = ⅔ cm), which is why the numbers look higher.

USUKEUFoot LengthCM
76409.625″24.4
7.56.540–419.75″24.8
87419.875″25.1
8.57.541–4210″25.4
984210.125″25.7
9.58.542–4310.25″26.0
10 Popular94310.5″26.7
10.59.543–4410.625″27.0
11 Popular104410.875″27.6
11.510.544–4511″27.9
12114511.125″28.3
13124611.5″29.2
14134711.875″30.2
15144812.25″31.1

How to Measure Your Feet

Measuring at home takes about 2 minutes and ensures a much better fit than guessing. Feet swell throughout the day, so measure in the afternoon for the most accurate result.

LENGTH WIDTH Longest toe Not always the big toe Heel Stand flat, weight evenly spread
1

Prep & Timing

Place a piece of paper on a hard floor against a wall. Measure in the afternoon or evening — feet can swell up to half a size during the day. Wear the socks you'd normally pair with the shoes.

2

Trace Your Outline

Stand on the paper with your heel touching the wall. Keep your full weight on the foot and trace around it with a pen held upright. Mark the longest toe and the widest point on each side.

3

Measure Both Feet

Measure heel-to-toe length and ball-width in cm or inches. Repeat for the other foot — most people have a difference of 2–5 mm. Always size for the larger foot to avoid discomfort.

4

Find Your Size

Compare your measurements to the charts above. Add about 0.5″ (1.25 cm) to your traced length for toe room. If you land between two sizes, choose the larger one for a more comfortable fit.

How Popular Brands Actually Fit

Shoe sizes aren't perfectly standardized across brands. Here's how some of the most popular brands tend to run compared to their stated size, based on common customer feedback.

Nike
Runs Small

Nike tends to run narrow and slightly short. Most people go up half a size, especially in running shoes like the Air Max and Pegasus lines.

Adidas
Runs Large

Adidas shoes, especially Ultraboost and Stan Smith, often fit a half size large. Consider going down 0.5 if you're between sizes.

New Balance
True to Size

Generally accurate to stated size. One of the few brands offering width options (narrow to extra-wide) across most models — ideal for wide or narrow feet.

Converse
Runs Large

Chuck Taylors are famously oversized. Most people size down a full size. Hi-tops can fit tighter around the ankle even in the right length.

Vans
True to Size

Old Skools and Authentics generally fit true. Sk8-His may feel tighter initially but break in within a few wears. Go with your regular size.

Dr. Martens
Runs Large

Docs use whole UK sizes only. If you're a US half size, round down. The leather is stiff at first but stretches significantly after break-in.

ASICS
True to Size

Running shoes are accurate but can run narrow. If you have wider feet, look for their "Wide" (2E for men, D for women) options which are available in most models.

Birkenstock
Runs Small

Uses EU sizing only. Many people need to size up 1 EU size from their usual. Choose "Narrow" for slim feet or "Regular" for average-to-wide feet.

Understanding Width Sizing

Length alone doesn't determine fit. The ball of your foot (widest point) needs adequate room too. US and UK sizes include letter-based width designations; EU sizes generally don't specify width.

🦶

How to Know Your Width

Measure the widest part of your foot (ball area) in inches or cm. Compare to width charts from your preferred brand. If your shoes feel tight on the sides but fine in length, you likely need a wider width rather than a larger size.

🌍

Width Across Regions

European and Asian brands typically come in one standard width (medium). Italian shoes tend to run narrow. UK brands like Clarks offer wider options. If width matters to you, New Balance, ASICS, and Brooks are among the best for width variety.

⏰

Width Changes Over Time

Feet tend to widen with age, weight changes, and pregnancy. If shoes that used to fit now feel snug, remeasure — you may have moved up a width. Leather shoes also stretch slightly with wear, while synthetic materials do not.

Children's Shoe Size Guide

Kids' shoes are divided into three groups by age. Children's feet grow fast — about one full size every 3–4 months for toddlers and every 4–6 months for older kids. Leave 0.5–0.75″ of growing room at the toe.

Infant / Baby

0–12 months · US 0–4

Soft-soled shoes only. Feet are still developing, so proper support and flexibility matter more than size precision. Measure every 6–8 weeks.

Toddler

1–4 years · US 4–10

Fastest growth period. Feet grow roughly 1 mm per month. Look for shoes with room to wiggle toes but snug enough at the heel to prevent slipping.

Little Kid

4–8 years · US 10.5–3

Growth slows slightly. Kids this age need sturdy soles for running and play. Velcro or slip-ons are practical until they can tie laces (usually around age 6).

Big Kid / Youth

8–12 years · US 3.5–7

Youth sizes overlap with adult sizing. A youth US 7 is roughly a women's US 8.5 or men's US 7. Once feet reach youth 7, it's time to switch to adult sizes.

Age RangeUSUKEUFoot Length (CM)
0–3 mo10.5169.5
3–6 mo211710.5
6–9 mo321811.4
9–12 mo431912.1
12–18 mo542012.7
18–24 mo652213.3
2–3 yrs872415.2
3–4 yrs1092716.5
5–6 yrs12113018.4
7–8 yrs1Y133220.0
9–10 yrs3Y23421.6
11–12 yrs5Y43723.5

Frequently Asked Questions

Quick answers to the most common shoe sizing questions.

For women, US sizes are approximately 2 numbers higher than UK sizes — a US 8 is a UK 6. For men, the difference is about 0.5 to 1 size — a US 10 is roughly a UK 9 or 9.5. Both systems use inches as their base unit, but they start from different reference points, which creates the offset.
There's no single formula because the systems use different increments. As a rough guide: for women, add about 31 to your US size (US 8 ≈ EU 39); for men, add about 33 (US 10 ≈ EU 43). EU sizing uses "Paris Points" where each size equals ⅔ cm. Use the converter at the top of this page for exact matches.
It depends on the type of shoe. For athletic and running shoes, size up half a size to allow for foot swelling during activity. For dress shoes and heels, your true measured size usually works. For boots, most people stay true to size but go up in width if wearing thick socks. Always check customer reviews for brand-specific fit advice before ordering.
Shoe sizing isn't as standardized as you might expect. Different brands use different lasts (foot-shaped molds), and a "size 10" from Nike is built on a different shape than a "size 10" from Adidas. The type of shoe matters too — athletic shoes are cut wider and longer than dress shoes. Material also plays a role: leather stretches over time while synthetics maintain their original shape.
Children typically transition to adult sizes when they outgrow youth size 6 or 7 (around ages 10–12). A youth US 7 is roughly equivalent to a women's US 8.5 or a men's 7. The foot length at this crossover point is approximately 25 cm (9.8 inches). Girls often make this transition earlier than boys.
Yes. Feet typically get wider and longer with age as ligaments and tendons lose elasticity. Many adults go up half a size to a full size between their 20s and 60s. Pregnancy, weight gain, and conditions like flat feet can also change your size. It's a good idea to remeasure your feet every couple of years rather than assuming your size is fixed.
"True to size" (TTS) means a shoe fits as expected for its labeled size — you don't need to adjust up or down. However, this is relative to your measured foot size, not necessarily what you wear in other brands. If you're a measured US 9 and a brand's US 9 fits comfortably, that brand runs true to size for you. Always go by measurements rather than habit.

Related Size Guides

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Boot Sizes

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Sandal Sizes

Sandal and flip-flop sizing guide

Insole Sizes

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Children's Shoes

Complete kids shoe size guide