Clothing Size Converter – Convert Sizes Across US, UK, EU and More
Shopping internationally or buying clothing online often means dealing with different size labels from different countries. A Medium in the United States is not always the same as a Medium in Japan or South Korea, and European numeric sizing uses a completely different scale from US or UK letter sizes. This Clothing Size Converter solves that problem by mapping sizes across 11 major international sizing systems, covering women's, men's, and children's clothing.
Which Sizing Systems Are Supported?
The converter supports the following regions and their associated sizing systems:
- US – United States (letter sizes XS–3XL and numeric sizes)
- UK – United Kingdom
- EU – Continental Europe (numeric sizes based on EN 13402)
- FR – France
- IT – Italy
- DE – Germany
- JP – Japan (uses numeric centimetre-based or letter sizes)
- AU – Australia
- KR – South Korea
- CN – China (uses body measurement codes such as 165/88A)
- INT – International standard (XS, S, M, L, XL, 2XL)
Garment Types Covered
The tool covers the most commonly purchased garment categories:
- Tops and Shirts – based on chest and waist measurements for both women and men.
- Bottoms and Trousers – based on waist and hip measurements, using inch-based US/UK waist sizes and centimetre-based EU sizes.
- Dresses – uses the same size chart as women's tops, covering chest, waist, and hip measurements.
- Children's Clothing – covers sizes from newborn (0–3 months) through children's size 14, mapped across all supported regions.
How to Use the Converter
Using the converter is straightforward:
- Select the garment type you are shopping for.
- Choose the gender — Women, Men, or Children.
- Select the From region, which is the region whose sizing you already know.
- Choose your size in that region from the dropdown.
- Select the To region — the region you want to convert to.
- Press Convert to see your result.
The result panel shows your converted size, the body measurement range associated with that size, and equivalents across all supported regions in a table — useful for comparing sizes across multiple destinations at once.
Understanding the Body Measurement Ranges
Each size row in the size chart corresponds to a range of body measurements in centimetres. For example, a women's EU 40 typically corresponds to a chest of 88–93 cm and a waist of 70–75 cm. If your measurements fall near the boundary of two sizes, the converter shows a fit note recommending you try both. Taking accurate body measurements before converting gives you the most reliable result.
Why Do Clothing Sizes Differ Between Countries?
Clothing sizes developed independently in different countries over the past century, each using its own base measurements and increments. The European system (EN 13402) is based on the body's height and chest or hip girth in centimetres, using a specific scale. The US system historically developed from a separate survey and uses its own numeric scale. Japan introduced centimetre-based sizing to replace older letter sizes, while South Korea and China adopted their own numeric or hybrid codes. These historical differences mean there is no simple arithmetic formula to convert between all systems — lookup tables based on shared body measurements are the most reliable approach.
Tips for a Better Fit When Shopping Internationally
A size conversion gives a good starting point, but clothing fit depends on more than just measurements. Keep these tips in mind:
- Measure yourself with a soft tape measure and compare against the body measurement ranges shown in the result.
- When a size falls in a range (for example, EU 38–40), choose the smaller size for fitted styles and the larger for relaxed or layered looks.
- Check the specific brand's size chart if one is available, since designer and premium brands often use vanity sizing or have distinctive fits.
- For children's clothing, size by height and weight rather than age alone, since children grow at different rates.
- Stretch fabrics add tolerance; woven fabrics and structured garments have less give, so consider sizing up if you are between sizes.
Measurement Standards Used
The size charts in this converter are based on widely accepted international standards, primarily ISO 8559 (Garment construction and anthropometric surveys – Body dimensions) and EN 13402 (Size designation of clothes for adults). Children's sizes follow the EN 13402-3 standard for labelling by body dimensions. These standards define measurement methods and how size labels correspond to body dimensions across the European and international garment industry.