Clothing Size Converter

Formula
Size lookup from standardized conversion tables

Clothing size conversions use industry-standard lookup tables, not a mathematical formula. Sizes are mapped between US, UK, and EU systems based on measurements published by apparel trade associations. Individual brands may vary slightly from these standards.

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TL;DR

Select a clothing category and US size to see the equivalent EU and UK sizes instantly.

Convert clothing sizes instantly between US, UK, and EU systems. Covers women's tops (XS-XXL), women's bottoms (waist 24-34), men's tops (XS-XXL), and shoes for both men and women. Select a category and your US size to see equivalent sizes in all systems.

Clothing size systems vary by country and even by brand. A US size 8 dress is a UK size 12 and an EU size 36. Men's shirt sizes in the US use XS-XXL labels, while EU sizes use chest measurement numbers (44, 46, 48...). Online shopping from international retailers makes accurate size conversion a practical need. This converter covers five categories: women's tops, women's bottoms by waist measurement, men's tops, and shoes for both men and women. Select your category and US size to see the EU and UK equivalents instantly. Note that sizing standards vary between brands and manufacturers. These conversions follow industry-standard tables, but always check a specific brand's size chart when available, especially for fitted garments.

A familiar scenario

Walking through an example

Example: Women's top size M (US) to EU and UK

  1. 1Category: Women's Tops
  2. 2US Size: M
  3. 3Look up M in women's tops table
  4. 4EU equivalent: 36
  5. 5UK equivalent: 8
  6. 6International: M
Result: US M = EU 36 = UK 8 in women's tops.

When this comes up

Where you would actually use this

  • Shopping on international websites: European fashion retailers list sizes in EU numbers. Enter your US size to find your EU equivalent before ordering so you do not need to return items due to sizing.
  • Buying gifts from overseas: If someone tells you their UK size and you are ordering from a US retailer, convert it here. Shoe sizes in particular differ significantly between US and UK systems.
  • Shopping for shoes in European destinations: When traveling in Europe, shoe stores use EU sizes. Know your EU equivalent before you travel so you can shop comfortably without a calculator.
  • Buying from resale platforms: Resale sites (eBay, Depop, Vinted) attract international sellers who list in their local sizing system. Convert before messaging a seller to confirm whether an item is likely to fit.

Where it trips people up

Things people get wrong

  • Assuming one size table fits all brands: Size charts are averages based on industry standards. A size M at one brand may fit like a S or L at another, particularly between fast fashion and tailored clothing lines. Use these conversions as a starting point, then check brand-specific charts.
  • Forgetting that shoe sizes differ by gender: Men's and women's US shoe sizes are not the same. A men's US 8 (EU 41) and a women's US 8 (EU 38) are three EU sizes apart. Always select the correct category for shoe conversions.
  • Using top sizes for bottom sizes: Women's top and bottom sizes follow different scales. A size M top does not necessarily correspond to a size M or specific waist measurement in bottoms. Use the womens-bottoms category for waist-based conversions.
  • Not accounting for country-specific variations: Some countries use slightly different size scales even within the "EU" category. Italian brands, for example, sometimes use a different scale from German or French brands. If a purchase is important, consult the brand's own size guide.

The math

The formula, formally

  1. 1Select the clothing category from the dropdown: women's tops, women's bottoms, men's tops, men's shoes, or women's shoes.
  2. 2Select your US size from the available options.
  3. 3The calculator looks up the corresponding EU and UK sizes from a standardized conversion table.
  4. 4Primary result shows the EU size. Secondary results show US, UK, and international size labels.
  5. 5For women's bottoms, the US size is the waist measurement in inches.
  6. 6For shoes, US sizes differ between men and women for the same EU size: a men's US 8 is EU 41, while a women's US 8 is EU 38.

Terms to know

Glossary

TermDefinition
Vanity sizingThe practice of labeling clothing with smaller numbers or letters than a garment's actual measurements warrant, to appeal to buyers. It means a US size 8 today may correspond to what was labeled size 10 or 12 decades ago. Vanity sizing varies by brand and era.
EU sizing for clothingEuropean clothing sizes are based on body measurements in centimeters. Women's EU sizes roughly correspond to the waist measurement divided by 2 plus a constant. Men's EU suit sizes correspond to chest circumference in centimeters.
Mondopoint shoe sizingAn international shoe sizing standard based on foot length in millimeters. Used by military organizations and some manufacturers for standardization, though consumer retail generally uses US, UK, or EU size numbers.
Size inclusivityMany brands now offer extended sizing beyond the traditional XS-XXL or numeric range. Plus sizes, petite sizes, and tall sizes often follow different measurement proportions. For extended sizes, consult each brand's specific measurement chart.

Expert advice

Pro tips

  • Measure yourself before any significant online purchase: Bust, waist, and hip measurements in inches or centimeters let you compare directly against a brand's measurement chart. This is more reliable than size label conversion for fitted items.
  • Save your measurements in notes: Store your key measurements on your phone. When shopping internationally online, you can cross-reference your measurements against a size chart in seconds without needing to re-measure each time.
  • Order two sizes for expensive items from new brands: If a brand is new to you and returns are free, ordering two adjacent sizes and returning the one that does not fit avoids a disappointing single order. The conversion gives you a starting point, but brand fit varies.
  • Check customer reviews for fit guidance: On platforms that show customer reviews, filter for reviewers who mention sizing. Comments like "runs small" or "size up" from buyers with similar measurements to yours are often more reliable than size charts alone.

Common questions

Frequently asked questions

For related calculations, try the Unit Price Calculator, Weight Converter, or Length Converter. Browse all Calculator Online calculators for the full catalog.

Methodology

This calculator uses the standard clothing size converter formula. Results match those from established financial, scientific, and health references.

Reviewed by

Calculator Online Editorial Team. All formulas verified against authoritative sources before publication.

Last updated

2026-05-24

Sources & References