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Clothing Size Converter

Enter your chest measurement to get an EU number size and a letter size - these are guides, since brand cuts vary.

EU size
50
Letter
L
EU ≈ chest ÷ 2

TL;DR: A clothing size converter translates your measurements into different international sizing systems for online shopping.

  • Accurate measurements are essential: measure your bust, waist, hips, and inseam before converting.
  • Women"s US numeric sizes are typically two sizes smaller than UK sizes (e.g., a US 6 is a UK 10).
  • Men"s suit jacket sizes in the US/UK (e.g., 40R) are 10 points lower than European sizes (e.g., 50R).
  • Sizing is not standardized; always check the specific brand"s size guide for the best fit.
  • Children"s sizes are often based on age and height rather than a simple numeric conversion.
  • Letter sizes like S, M, and L can represent different measurements depending on the region and brand.

What Is a Clothing Size Converter?

A clothing size converter is a chart or tool that translates clothing sizes between different national and regional systems. Because there is no single, universally adopted sizing standard, garments from the United States (US), the United Kingdom (UK), Europe (EU), and Asia all use different labeling conventions. These converters are essential for international online shopping, helping consumers select the correct size and reduce the likelihood of returns.

Sizing systems can be numerical (like US 8 or EU 38), alphabetical (like S, M, L), or based on specific body measurements (like a 32-inch waist). A clothing size converter works by mapping these disparate systems to one another, providing an approximate equivalent. However, these conversions are a guideline, as fit can vary significantly between brands even within the same country.

How to Measure Yourself for Accurate Sizing

To use a size conversion chart accurately, you must first know your own body measurements. Use a soft, flexible measuring tape held snugly but not tightly against your body. For best results, measure yourself over underwear or thin clothing and stand in a natural, relaxed posture.

Follow these steps for key measurements:

  • Bust/Chest: Measure around the fullest part of your bust or chest, keeping the tape parallel to the floor.
  • Waist: Measure around the narrowest part of your natural waistline, typically just above your belly button.
  • Hips: Stand with your feet together and measure around the fullest part of your hips and seat.
  • Inseam: Measure the inside of your leg from your crotch down to where you want the trousers to end, usually the ankle bone.

Women's International Size Conversion Chart

A women"s US size 6 is typically equivalent to a UK size 10 and a European size 36. These conversions are approximate and should be cross-referenced with a brand"s specific chart, as fit models vary.

InternationalUSUKEurope (EU)AustraliaJapan
XS0-24-632-344-65-7
S4-68-1036-388-109-11
M8-1012-1440-4212-1413-15
L12-1416-1844-4616-1817-19
XL16-1820-2248-5020-2221-23
XXL20-2224-2652-5424-2625-27

Men's International Size Conversion Chart

Men"s sizing for tops like suits, blazers, and shirts often differs from trousers. A men"s US/UK suit jacket size 40 corresponds to a European size 50. For trousers, sizing is commonly based on waist measurements in inches (US/UK) or a separate numeric system (EU).

Men's Tops (Suits, Jackets, Shirts)

US / UKEurope (EU)JapanInternational
344434 (XS)XS
364636 (S)S
384838 (M)M
405040 (L)L
425242 (XL)XL
445444 (XXL)XXL

Men's Trousers (Waist)

US / UK (Inches)Europe (EU)
2844
3046
3248
3450
3652
3854

Children's Clothing Size Conversion

Children"s clothing sizes are most often based on the child"s age or height in centimeters, especially in Europe. Unlike adult sizes, children's sizing can be more consistent across brands, but it is still wise to check specific measurements like height and weight recommendations.

Age RangeUS SizeUK SizeEurope (Height cm)
0-3 Months0-3M0-3M56-62
3-6 Months3-6M3-6M62-68
6-12 Months6-12M6-12M68-80
1-2 Years2T1-2y86-92
3-4 Years4T3-4y98-104
5-6 Years55-6y110-116
7-8 Years77-8y122-128

Why Do Clothing Sizes Vary So Much?

Clothing sizes vary significantly because there is no legally enforced international standard for garment sizing. Each country and even individual brands develop their sizing based on different data sets, target demographics, and historical precedents. A size 8 from one brand may fit differently than a size 8 from another due to these inconsistencies.

Several factors contribute to this variation:

  • Different Body Models: Brands base their sizes on different fit models, which are idealized representations of their target customer's body shape.
  • Vanity Sizing: This is the practice of labeling larger garments with smaller size numbers, a marketing tactic intended to make shoppers feel better. As a result, a size M today is often significantly larger than a size M from several decades ago.
  • Lack of Regulation: Without a governing body to standardize measurements globally, companies are free to define their own sizing structures.

Tips for Using Size Converters Effectively

The most effective way to use a size converter is as a starting point, followed by consulting the brand's own size chart. General conversion charts provide a good estimate, but brand-specific information is always more accurate.

  • Prioritize Brand Charts: Always look for a size guide on the retailer's product page. This chart will reflect the specific measurements that brand uses for its products.
  • Read Customer Reviews: Check reviews for comments on fit. Customers often state if an item runs large, small, or true to size, which provides valuable real-world context.
  • Know Your Measurements: Compare your own bust, waist, and hip measurements to the brand's chart instead of relying solely on converting from a size number.
  • Consider the Fabric: A garment made from a stretchy material like elastane will have more sizing flexibility than a non-stretch fabric like linen or 100% cotton.

Frequently Asked Questions

Is a UK size 12 the same as a US size 12? No, a UK size 12 is typically equivalent to a US size 8. US women's sizes are generally two numbers smaller than their UK counterparts.

What is EU size 40 in women"s clothing? A European women"s size 40 generally corresponds to a US size 10 or a UK size 14. This can vary slightly by brand.

How do I convert shoe sizes? Shoe size conversion uses a completely different system from clothing. For example, a US women's shoe size 8 is a UK 6 and an EU 39, but these numbers have no relation to clothing sizes.

Does "vanity sizing" affect size conversion? Yes, vanity sizing makes direct conversions less reliable. It forces consumers to rely on actual body measurements (in inches or centimeters) and brand-specific size guides rather than trusting that a size number is consistent everywhere.