RediCalc.com
Last updated: June 1, 2026

International Clothing Size Converter

Instantly convert clothing and shoe sizes between US, UK, EU, Japan, China, Korea, and Australia. Select your garment type, choose your known size, and see the equivalent in every major sizing system.

Quick Convert

Women's Tops & Dresses — Full Size Chart

USUKEUJapanChinaKoreaAUBust
0 (XXS)4303XXS (155/76A)44430"
2 (XS)6325XS (160/80A)44632"
4 (S)8347S (165/84A)55834"
6 (S)10369M (170/88A)551036"
8 (M)123811M (170/92A)661238"
10 (M)144013L (175/96A)661440"
12 (L)164215L (175/100A)771642"
14 (L)184417XL (180/104A)771844"
16 (XL)204619XL (180/108A)882046"
18 (XXL)224821XXL (185/112A)882248"
20 (3XL)245023XXXL992450"

📌 Sizing Tips

  • Asian sizes run smaller — you may need to size up 1-2 sizes compared to US/UK/EU
  • EU sizes are numeric and generally consistent across European countries
  • UK and US women's sizes differ by 4 — a US 8 is roughly a UK 12
  • Shoe sizes vary by brand — when in doubt, measure your foot length in cm and use the chart above
  • Korean sizes are often in mm for shoes and use a numeric system for clothing
  • • Always check the specific brand's size chart when shopping online
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Understanding the Clothing Size Converter

A clothing size converter translates garment sizes between US, UK, European and other systems so you can shop international brands with confidence. Sizing is notoriously inconsistent — a US 8 is not a UK 8 or an EU 38 — and getting it wrong means returns and frustration. The converter maps your usual size into the system a brand uses, taking much of the guesswork out of buying clothes from abroad.

Why sizes differ between countries

Each region developed its own sizing standard, and they rarely line up. European sizes often use a numeric scale tied loosely to body measurements in centimeters, while US and UK sizes use their own numbering. On top of that, "vanity sizing" means the same label varies between brands. A converter gives a reliable starting point, but checking the brand’s own measurements is always wise.

Measure yourself for the best fit

Because conversions are approximate, the most accurate approach is to know your body measurements — chest, waist, hips, inseam — in both inches and centimeters, then compare to the brand’s size chart. The converter narrows you to the right size range quickly, and your measurements confirm the exact pick. This two-step approach dramatically reduces returns when shopping internationally.

Tips & things to know

  • Conversions are approximate — always check the brand’s own size chart too.
  • Know your key measurements in both inches and centimeters before shopping abroad.
  • Vanity sizing means the same number varies by brand, so fit beats the label.

How Clothing Sizes Differ Around the World

There is no universal clothing size standard. Each country uses its own system, making international shopping confusing. US sizes use letter codes (S, M, L) or numeric values, UK sizes run about 4 numbers higher than US for women, EU sizes use a continental numbering system, and Asian sizes (Japan, China, Korea) generally run 1–2 sizes smaller than Western equivalents.

Shoe sizes are even more varied — Japan uses centimeters, Korea uses millimeters, and the US, UK, and EU each have their own scale. Our converter covers all the major systems so you can shop with confidence anywhere in the world.

Sources

  • International Organization for Standardization (ISO 8559): Size designation of clothes.
  • American Society for Testing and Materials (ASTM): Standard body measurements.

How to Use the Clothing Size Converter

1

Open the Clothing Size Converter

Navigate to the Clothing Size Converter page on Redicalc. The calculator loads instantly with no sign-up required.

2

Enter your values

Fill in your values into the input fields. Toggle between metric and imperial units if available.

3

Review your results

Your clothing size conversion results appear instantly as you type. Review the breakdown, charts, or detailed analysis provided.

4

Adjust and compare

Try different input values to compare scenarios. This helps you understand how changes affect the outcome.

5

Share or save your results

Use the copy or share buttons to save your results. You can also bookmark the page for quick access later.

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Frequently Asked Questions

Why are Asian sizes smaller than US/UK/EU?

Asian sizing systems are based on body measurements typical of their populations. Since average body dimensions differ across regions, a "Medium" in China or Japan generally corresponds to a "Small" in the US or UK. Always size up 1-2 sizes when buying Asian-sized clothing.

Are EU clothing sizes the same across all European countries?

Generally yes — the EU sizing system is standardized across most European countries. However, some brands in Italy, France, or Spain may have slight variations, so it's always good to check the brand's specific size chart.

How do I convert US women's sizes to UK?

For women's clothing, add 4 to your US size to get the approximate UK size. For example, a US 8 is roughly a UK 12. For shoes, subtract about 2 from your US size to get the UK equivalent.

What's the most reliable way to find my size in another country?

The most reliable method is to use body measurements (bust, waist, hip circumference for clothing; foot length for shoes) rather than converting between size labels. Our charts include reference measurements where available.

Do Korean clothing sizes work differently?

Korean clothing uses a numeric system (44, 55, 66, 77, etc.) that corresponds roughly to body measurements. Korean shoe sizes are measured in millimeters (e.g., 250mm = US men's 7). These sizes are used widely in K-fashion and Korean e-commerce.

Are children's sizes universal?

No — children's sizing varies widely. US sizes use age or numeric values (2T, 4T, 6), UK uses age ranges, EU uses height in centimeters, and Asian sizes often correspond to the child's height. Our chart maps all these systems together.