How do I convert US shoe size to EU?

For men, add 33 to the US size to get the EU size (e.g., US 10 = EU 43). For women, add 31 to the US size (e.g., US 8 = EU 39). These are approximate — always check the brand's specific size chart as EU sizing can vary by half a size between brands.

What is the difference between US and UK shoe sizes?

Men's US and UK shoe sizes differ by 0.5 — a US men's 10 equals a UK 9.5. Women's US and UK sizes differ by 2 — a US women's 8 equals a UK 6. Kids' sizes are the same between US and UK up to size 13, after which they transition to adult sizing.

How do I measure my foot size at home?

Stand on a piece of paper and trace your foot outline. Measure the longest distance from heel to the tip of your longest toe in centimeters or inches. Use a shoe size chart to convert that foot length to your size. Always measure both feet and use the larger measurement, as feet are rarely identical.

What does CM mean in shoe sizing?

CM in shoe sizing refers to the foot length in centimeters. This is the most universal and accurate way to find your size across different regions. Japanese and Korean sizing systems use CM as the primary size indicator. Measure your foot length and match it to the CM column in any size chart.

How do kids shoe sizes work?

In the US, kids shoe sizes run from 0 (newborn) to 13, then restart at 1 (youth/junior) through 7, at which point they transition to adult sizing. EU kids sizes run from about 16 (toddler) upward continuously. When converting kids sizes, always check whether the size refers to toddler (T) or youth (Y) sizing.

Do shoe sizes differ between brands?

Yes, shoe sizing varies significantly between brands and even between shoe styles within the same brand. Nike tends to run slightly large, while Converse typically runs half a size small. New Balance and ASICS are generally true to size. Always check the brand's specific size guide and customer reviews when buying online.

What is a half size in shoes?

A half shoe size represents approximately 4mm (1/6 inch) of additional length compared to the whole size below it. If you measure between two whole sizes, always go up to the next half or full size — never size down. Shoe length is just one factor; width also matters significantly for fit.

How do I convert EU shoe size to US for women?

To convert EU to US women's size, subtract 31 from the EU size (e.g., EU 39 − 31 = US 8). Alternatively, use our converter above — select Women, enter your EU size, and it will show the US, UK, and CM equivalents instantly.

What is the most accurate way to find my shoe size?

The most accurate method is to measure your foot length in centimeters or millimeters and match it directly to a size chart. Stand on a hard floor (not carpet), measure both feet in the afternoon (feet swell slightly throughout the day), and use the larger measurement. This gives you a size that works across all regional sizing systems.

Sizing · Conversion · Charts

Shoe Size
Conversion

Q: Are women's shoes 1.5 sizes bigger than men's?

Yes, in US sizing, women's shoes are approximately 1.5 sizes larger than men's for the same foot length. A women's US 9 is equivalent to a men's US 7.5. This matters when shopping unisex or men's shoes as a woman, or vice versa.

Convert shoe sizes instantly between US, UK, EU, and CM for men, women, and kids. Includes full size charts and a foot measurement guide.

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Size Reference

Complete Shoe Size Charts

US · UK · EU · CM — men, women, and kids in one place.

US (Men)	UK	EU	CM	Inches
6	5.5	38.5	24	9.4"
6.5	6	39	24.5	9.6"
7	6.5	40	25	9.8"
7.5	7	40.5	25.4	10"
8	7.5	41	25.9	10.2"
8.5	8	42	26.3	10.4"
9	8.5	42.5	26.7	10.5"
9.5	9	43	27.1	10.7"
10	9.5	44	27.5	10.8"
10.5	10	44.5	27.9	11"
11	10.5	45	28.3	11.1"
11.5	11	45.5	28.6	11.3"
12	11.5	46	29	11.4"
13	12.5	47	29.8	11.7"
14	13.5	48	30.5	12"
15	14.5	49	31.3	12.3"

US (Women)	UK	EU	CM	Inches
5	2.5	35	22	8.7"
5.5	3	35.5	22.5	8.9"
6	3.5	36	23	9.1"
6.5	4	36.5	23.5	9.3"
7	4.5	37	23.8	9.4"
7.5	5	38	24.1	9.5"
8	5.5	38.5	24.5	9.7"
8.5	6	39	25	9.8"
9	6.5	39.5	25.4	10"
9.5	7	40	25.9	10.2"
10	7.5	40.5	26.2	10.3"
10.5	8	41	26.7	10.5"
11	8.5	42	27	10.6"
11.5	9	42.5	27.5	10.8"
12	9.5	43	28	11"

US (Kids)	UK	EU	CM	Notes
1C	0.5	16	9	Infant
2C	1	17	10	Infant
3C	2	18	11	Infant
4C	3	19	12	Toddler
5C	4	21	13	Toddler
6C	5	22	14	Toddler
7C	6	23	14.5	Toddler
8C	7	24	15.5	Toddler
9C	8	25	16	Toddler
10C	9	27	17	Little Kid
11C	10	28	17.5	Little Kid
12C	11	30	18.5	Little Kid
13C	12	31	19.5	Little Kid
1Y	13	32	20	Big Kid
2Y	1	33	21	Big Kid
3Y	2	35	22	Big Kid
4Y	3	36	22.5	Big Kid
5Y	4	37	23.5	Big Kid
6Y	5	38	24	Big Kid
7Y	6	39	24.5	→ Adult sizing

Measurement Guide

How to Measure Your Foot at Home

4 steps for the most accurate shoe size.

Trace on paper

Place a blank sheet of paper on a hard floor (not carpet). Stand on it and trace around your foot with a pencil held vertically.

Measure heel to toe

Measure the longest distance from the back of the heel to the tip of the longest toe (not always the big toe).

Measure in the afternoon

Feet swell slightly throughout the day. Measure in the afternoon or evening for the most accurate fit — especially for athletic shoes.

Use the larger foot

Measure both feet — most people have one slightly larger than the other. Always size for the larger foot and use insoles on the smaller side if needed.

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Brand Sizing Varies

Nike tends to run half a size large. Converse runs half a size small. New Balance and ASICS are typically true to size. When buying online, always read customer reviews for sizing notes specific to that model.

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Men vs Women Sizing

US men's and women's shoe sizes differ by 1.5 sizes. A women's US 9 equals a men's US 7.5 in terms of foot length. This matters when shopping unisex or gender-neutral shoes.

Example conversions: W8 = M6.5 · W9 = M7.5 · W10 = M8.5 · W11 = M9.5. If you're a woman buying men's shoes, go 1.5 sizes down. If a man buying women's, go 1.5 up.

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What Is a Half Size?

A half shoe size represents approximately 4mm (about 1/6 inch) in additional foot length. If you measure between two whole sizes, always round up to the next half or full size — never down.

Width also matters. US shoes come in widths: Narrow (2A/N), Medium (B for women, D for men), Wide (D for women, 2E for men), and Extra Wide (2E/EE for women, 4E for men).

Shoe Size Conversion — Complete Guide

Shoe sizing is one of the most confusing aspects of buying footwear — especially when shopping internationally. The US, UK, EU, and Asian sizing systems are all different, and even within a single system, brands can vary significantly. This guide explains how each system works, how conversions are calculated, and how to find your most accurate size from a foot measurement.

Our free shoe size converter handles men's, women's, and kids' sizes across all four major systems: US, UK, EU, and CM (foot length in centimeters). Enter your size in any system and instantly see the equivalent in all others.

How Shoe Size Systems Work

US Shoe Sizing

The US sizing system uses separate scales for men, women, and children. Men's and women's sizes use the same numbers but represent different foot lengths — a men's US 8 is about 26cm while a women's US 8 is about 24.5cm. Children's sizes run from 0 (newborn) to 13, then restart at 1Y (youth) through 7Y before transitioning into adult sizing.

UK Shoe Sizing

UK sizing is similar to US but offset by different amounts for men and women. Men's UK sizes are 0.5 less than US (US 10 = UK 9.5). Women's UK sizes are 2 less than US (US 8 = UK 6). UK kids' sizes closely mirror US kids' sizes up to size 13, after which they adopt adult sizing conventions.

EU Shoe Sizing

European sizing uses a single continuous scale with no separate men's and women's numbers. EU sizes are based on the Paris Point system, where each size equals 2/3 of a centimeter of foot length. To convert US men's to EU, add approximately 33. For US women's to EU, add approximately 31. EU sizing is used across Continental Europe and is generally the most precise system for cross-country shopping.

EU Band from US (Men): US + 33 ≈ EU (e.g. US 10 → EU 43) EU Band from US (Women): US + 31 ≈ EU (e.g. US 8 → EU 39) UK from US (Men): US − 0.5 = UK (e.g. US 10 → UK 9.5) UK from US (Women): US − 2 = UK (e.g. US 8 → UK 6) CM foot length: EU × 0.667 cm approximately

CM Sizing (Japan / Korea)

Japan and South Korea use foot length in centimeters as the primary sizing unit. This is the most universal and accurate system — it doesn't require separate men's/women's scales because foot length is foot length. A 26.5cm foot is a 26.5cm foot regardless of gender. When buying from Japanese brands like Asics, Onitsuka Tiger, or Korean brands, CM sizing is your most reliable reference.

Tips for Buying Shoes Online

Always Use Foot Length, Not Just Size

The most accurate way to buy shoes online is to know your foot length in centimeters and compare it to the brand's size chart directly. Size charts that show CM or mm ranges eliminate the ambiguity of regional sizing differences entirely.

Check Brand-Specific Fit Notes

Nike shoes generally run half a size large — many shoppers size down. Converse (especially Chuck Taylors) run half a size small — size up. New Balance, ASICS, and Brooks tend to be true to size. Adidas varies by model — the Ultraboost runs slightly large while the Stan Smith is typically true to size.

Consider Shoe Width

Length is only half the equation. If shoes feel tight across the ball of the foot even in the right length, you may need a wider width. US widths range from 2A (narrow) through 4E (extra wide). Many brands offer standard width only — look for brands like New Balance, Brooks, or Keen if width is a concern.

Athletic Shoes vs Dress Shoes

Athletic shoes (running, basketball, training) should have a thumb's width of space between your longest toe and the end of the shoe to accommodate foot swelling during activity. Dress and leather shoes are typically worn with less room and may feel snug at first but stretch slightly with wear.

Frequently Asked Questions

For men, add 33 to the US size to get the EU equivalent (US 10 = EU 43). For women, add 31 (US 8 = EU 39). These are approximate — always cross-check with the brand's specific size chart, as EU sizing can vary by half a size between manufacturers.

Men's US sizes are 0.5 larger than UK (US 10 = UK 9.5). Women's US sizes are 2 larger than UK (US 8 = UK 6). Kids' sizes are approximately the same between US and UK up to size 13, after which they transition to adult sizing conventions.

Stand on a sheet of paper on a hard floor and trace your foot outline. Measure the distance from the heel to the tip of your longest toe in centimeters. Measure both feet in the afternoon (when feet are at their largest) and use the larger measurement. Match your foot length to the CM column in any shoe size chart for the most accurate result.

Yes. In US sizing, women's shoes are 1.5 sizes larger than men's for the same foot length. A women's US 9 is equivalent to a men's US 7.5. This is important when buying unisex or men's shoes as a woman — subtract 1.5 from your women's size to find the men's equivalent.

CM refers to foot length in centimeters and is the primary sizing unit used in Japan and South Korea. It's also the most universal measure — a 26.5cm foot is the same regardless of regional sizing conventions. When buying from Japanese brands like Asics or Onitsuka Tiger, the CM value on the label refers directly to your foot length.

US kids' sizes run from 0C (newborn) to 13C (toddler/little kid), then restart at 1Y (youth) through 7Y. At around 7Y, kids transition to adult sizing (men's or women's). EU kids sizes run continuously upward from about 16. Always check whether a listed size is "C" (child) or "Y" (youth), as 1C and 1Y are very different sizes.

Yes, significantly. Nike tends to run half a size large. Converse typically runs half a size small. New Balance, ASICS, and Brooks are generally true to size. Adidas varies by model. When buying online, read customer reviews specifically for sizing notes — they are the most reliable real-world guide beyond the official size chart.

A half shoe size represents approximately 4mm (about 1/6 inch) of additional foot length. If you measure between two whole sizes, always size up to the next half or full size — never down. EU sizing is continuous and doesn't always include half-size equivalents, which is one reason CM foot measurement is often more precise for cross-system shopping.

Subtract 31 from the EU size to get the approximate US women's size (EU 39 − 31 = US 8). For US men's from EU, subtract 33 (EU 43 − 33 = US 10). Use our converter above for instant results — select Women, enter your EU size as the source, and US as the target.

Measure your foot length in centimeters on a hard surface in the afternoon (feet swell slightly through the day). Measure both feet and use the larger measurement. Match this CM value directly to a brand's size chart rather than relying on regional size conversions alone. This method works across all international brands and eliminates ambiguity from cross-system conversions.

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