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Clothing Size Converter

Convert clothing sizes between US, UK and EU.

Reviewed for accuracy by the Math Ora X team Last updated

Result

About the Clothing Size Converter

Converts women's clothing sizes between US, UK and EU standards. Sizing varies by brand, so use this as a guide.

How to use this calculator

  1. Enter the clothing size you already know, such as a US, UK, or EU size.
  2. Choose the source sizing system and the system you want to convert to.
  3. Check the converted result and compare it with the sizing chart if needed.
  4. Use the worked example and notes to understand why the numbers can differ by brand and garment type.

The formula explained

This tool does not use one universal formula, because clothing sizes are based on different regional sizing systems and brand conventions. It converts by matching the entered size to the closest equivalent in the chosen target system.

  • x = the clothing size you enter
  • US = the United States sizing system
  • UK = the United Kingdom sizing system
  • EU = the European sizing system

Step by step method

  1. Start with the size label you know, for example a US women’s size or a UK men’s size.
  2. Identify the source system and the target system so the comparison is made in the correct direction.
  3. Look up the equivalent size in the conversion chart, then confirm it against the fit notes if the calculator shows them.

Worked example

Problem. Convert a women’s US size 8 to the UK and EU systems.

  1. A women’s US size 8 is commonly treated as a UK size 12.
  2. The same size is commonly treated as an EU size 40.
  3. So the converted sizes are UK 12 and EU 40.

Answer. US 8 converts to UK 12 and EU 40.

Tips and common mistakes

  • Clothing sizes are not exact measurements, so two brands can label the same body measurements with different sizes.
  • Always check whether the item is for women, men, or children, because the size charts are different.

Frequently asked questions

Why does sizing differ?+

Each region uses its own numbering, and brands apply 'vanity sizing' differently.

Should I rely on this?+

Use it as a starting point; check each brand's own size chart.

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