International clothing size converter - your complete guide to global sizing
Our professional international clothing size converter provides accurate conversions between global sizing systems including European, American, British, and Asian standards. This comprehensive tool features detailed size charts for women, men, and children, enabling confident shopping across international online retailers and physical stores worldwide. Understanding size conversions is essential for successful international fashion purchases.
Understanding international sizing systems
European sizing standards: the European Union uses a standardized sizing system regulated by the EN 13402 standard, which provides consistency across member countries. European sizes for women typically range from 32 to 54 and beyond, with each number roughly corresponding to half the bust circumference in centimeters. Men's European sizes range from 44 to 66, based on chest circumference. This system is used throughout France, Germany, Italy, Spain, and other EU countries, making cross-border shopping relatively straightforward within Europe.
American sizing conventions: the United States uses a distinct sizing system that differs significantly from European standards. American women's sizes typically range from 0 to 20 and up, with additional letter designations (XS, S, M, L, XL) for more general sizing. US sizes generally run larger than European equivalents, reflecting different average body measurements. Men's dress shirts in the US are sized by collar circumference in inches, while pants use waist (W) and inseam length (L) measurements, also in inches. This system prioritizes ease of fit and comfort.
British sizing system: UK sizes represent a middle ground between American and European systems. British women's sizes are typically 6 numbers higher than European sizes (UK 12 equals EU 38), while maintaining their own unique progression. The UK system evolved independently and reflects British anthropometric data. Many British retailers now provide EU size conversions to facilitate international shopping, especially post-Brexit when customs considerations make accurate sizing even more important for European customers.
Asian sizing standards: Asian countries including Japan, Korea, and China use sizing systems based on Asian anthropometric data, which typically results in sizes that run 1-2 sizes smaller than Western equivalents. Japanese sizes often use letters (S, M, L) but these correspond to smaller measurements than Western interpretations. When shopping from Asian retailers, always check detailed measurement charts in centimeters rather than relying solely on size letters or numbers.
Women's clothing size conversion
Dress and top sizing: women's dress sizes show the most variation between international systems. A European size 38 typically corresponds to US size 8 and UK size 12, but individual brand variations are common. The bust, waist, and hip measurements should be your primary reference points. European sizes increase by 2 (36, 38, 40), while US sizes increase by 2 (6, 8, 10), but the actual measurements they represent differ. Always measure yourself accurately and compare with brand-specific size charts for the best fit.
Proper body measurements: to determine your correct size, measure your bust at the fullest point while wearing a non-padded bra, your natural waist at the narrowest part (usually just above the belly button), and your hips at the widest point. Use a flexible tape measure, ensure it's level all around your body, and keep it snug but not tight. Taking measurements in the morning before eating can provide the most consistent results. Having someone else take your measurements often yields more accurate results than self-measurement.
Letter sizing correspondence: international letter sizes (XS, S, M, L, XL) provide a general guideline but vary significantly by brand and region. In European standards, XS typically corresponds to sizes 32-34, S to 36-38, M to 40-42, L to 44-46, and XL to 48-50. However, American brands often size these letters more generously, so an American medium might fit like a European large. Always check the numeric equivalents provided by each brand.
Men's clothing size conversion
Suit and jacket sizing: men's suits and jackets in Europe use chest circumference directly as the size number (size 50 means 50 cm half-chest circumference or 100 cm full chest). US and UK systems use similar numbers but may include additional letters for length variations: S (Short), R (Regular), and L (Long). A European size 50 typically corresponds to US/UK size 40. Premium suit brands often offer additional measurements for sleeve length and back length for optimal fit.
Dress shirt sizing: dress shirts present unique sizing challenges as they use collar measurements. US and UK shirts use inches for collar circumference (14, 14.5, 15, etc.), while European shirts may use centimeters (36, 37, 38) or corresponding numeric sizes. Sleeve length is measured from the center back neck to the wrist and varies by body height. Understanding both collar and sleeve measurements ensures proper shirt fit for professional and formal occasions.
Pants and jeans: men's pants sizing varies dramatically by region. American jeans use waist (W) and length (L) in inches, such as W32/L34. European pants may use waist circumference in centimeters or a numeric size. UK sizes are similar to US sizes. When converting, remember that 1 inch equals 2.54 centimeters, so a 32-inch waist equals approximately 81 centimeters. Many brands now provide both measurements for clarity.
Children's clothing sizes
European children's sizing: European children's sizes elegantly correspond to height in centimeters, making them intuitive and practical. A size 128 fits a child approximately 128 cm tall. This system accounts for growth patterns and makes size selection straightforward. The sizes typically progress in 6 cm increments (92, 98, 104, 110, 116, etc.), though some brands offer intermediate sizes. This height-based system works well until children reach teen years when they transition to adult sizing.
American children's sizing: US children's sizing uses age-based categories with T (Toddler) designations for ages 2-4 (2T, 3T, 4T), then transitions to simple numeric sizes (4, 5, 6, 7, etc.). This system is less precise than height-based sizing as children of the same age vary considerably in size. US size charts typically include height and weight ranges for each size. Teen sizes often transition to junior sizing (Jr) or young adult sizes around age 14-16.
Growth considerations: when buying children's clothing, factor in growth spurts. Children grow approximately 5-7 cm per year between ages 2-10, with variations during growth spurts. Buying slightly larger sizes for expensive items or seasonal clothing makes economic sense. However, avoid oversizing too much as ill-fitting clothes can be uncomfortable and unsafe, particularly for active wear. Consider the season and expected wear period when selecting sizes.
Shoe size conversion
European shoe sizing: European shoe sizes use the Paris Point system, where one size equals 2/3 of a centimeter. The sizes progress in whole and half sizes (35, 35.5, 36, 36.5, etc.). European sizing is unisex in numbering but the actual last (shoe form) differs for men's and women's shoes. Most European brands provide consistent sizing, making it relatively reliable once you know your size. The system is used throughout Europe and many other parts of the world.
American shoe sizing: US shoe sizing uses the Barleycorn measurement (1/3 of an inch) and critically differs for men's and women's shoes. A woman's US size 8 has the same foot length as a men's US size 6.5, with sizes offset by approximately 1.5 sizes. This distinction often confuses international shoppers. US athletic shoe brands dominate globally, so understanding US sizing is valuable. The sizing runs from approximately US women's 5-12 and men's 6-15 for standard ranges.
UK shoe sizing: British shoe sizes fall between US and European systems and also differ for men and women, though by a smaller margin than US sizes. UK sizes are typically about 0.5 to 1 size smaller than US sizes. The UK system uses whole and half sizes. Many UK brands now provide EU conversions to simplify international sales, particularly important after Brexit affected trade with European countries.
Measuring foot length: the most accurate sizing method involves measuring actual foot length. Stand on paper, trace your foot outline, and measure from heel to longest toe in centimeters. Measure both feet as they often differ slightly, and use the larger measurement. Measure in the evening when feet are slightly swollen from daily activity. Add 0.5-1 cm to your measurement to account for toe space in shoes. Compare this length with international size charts for most accurate sizing.
Brand-specific sizing variations
Fast fashion brands: retailers like Zara, H&M, and Mango each have distinct sizing philosophies. Zara, based in Spain, generally follows European sizing accurately with modern, slightly slim cuts. H&M from Sweden often runs half a size small, particularly in tops and dresses. Mango uses European sizing with Mediterranean-influenced cuts. These brands target international markets, so their sizing has evolved to accommodate diverse customer bases, but consistency varies by collection and season.
American athletic brands: Nike, Under Armour, and New Balance typically use US sizing with generous fits, especially in activewear and athletic shoes. Nike shoes often run large, so many customers size down by half a size. Athletic clothing is designed for movement, so fits tend to be roomier than fashion clothing. These brands provide extensive sizing guidance due to their global presence, often including multiple region-specific size charts on their websites.
European luxury brands: premium brands like Hugo Boss, Armani, and Louis Vuitton generally have very precise sizing that adheres closely to measurements. Italian brands often favor slim, tailored fits that may require sizing up for comfort. French luxury brands tend toward sophisticated, body-conscious cuts. These brands target specific aesthetics and body proportions, so trying items or carefully reviewing measurements becomes especially important given the investment.
Asian brand considerations: Japanese brands like Uniqlo and Korean fast fashion typically run 1-2 sizes smaller than Western brands due to different average body proportions. Uniqlo has adapted somewhat for international markets, offering both Asian and Western sizing in different regions. When shopping Asian brands online, always check the actual measurements in centimeters provided in size charts rather than relying on size letters or numbers. Many Asian brands now indicate "international sizing" versus "Asian sizing."
Online shopping strategies
Reading size charts: every reputable online retailer provides detailed size charts specific to their products. These charts typically show measurements for bust, waist, hips, and sometimes inseam, sleeve length, and other dimensions. Compare your actual measurements with these charts rather than assuming your usual size will fit. Pay attention to whether measurements are for the garment (laying flat) or body measurements, as some brands specify one or the other. Garment measurements should be slightly larger than your body measurements to allow for movement and comfort.
Customer review analysis: product reviews are invaluable for understanding true fit. Look specifically for comments about sizing: "runs small," "runs large," "true to size," or "size up/down." Reviews from customers who provide their measurements and size purchased are particularly helpful. Look for patterns in reviews - if multiple customers mention sizing issues, it's likely accurate. Consider the reviewer's location too, as regional size expectations vary.
Return policies: before purchasing, understand the return policy thoroughly. Many online retailers offer free returns within 30-60 days, which reduces the risk of ordering multiple sizes. Some services even encourage ordering multiple sizes with easy return processes. European retailers typically must offer 14-day returns by law. US policies vary by retailer. International returns can be costly, so factor in potential return shipping when shopping from overseas retailers.
Virtual fitting tools: many retailers now offer virtual fitting rooms or size recommendation algorithms. These tools ask for your height, weight, body shape, and sometimes photos to recommend sizes. While not perfect, they can provide helpful guidance, especially when combined with traditional size charts and reviews. Some brands remember your measurements across purchases, improving recommendations over time. Mobile apps with AR fitting features are becoming increasingly sophisticated.
Fit types and style considerations
Slim fit versus regular fit: modern menswear especially emphasizes different fit categories. Slim fit clothing is cut closer to the body with less ease, often requiring sizing up compared to regular fit from the same brand. Regular or classic fit provides traditional proportions with moderate ease. Relaxed or comfort fit offers the most room. The same numeric size in these different fits represents different actual measurements. Understanding your preferred fit style helps in selecting the correct size across brands.
Stretch fabrics: the prevalence of elastane (spandex) in modern clothing affects sizing significantly. Fabrics with 2-5% stretch provide flexibility without significantly impacting size selection. Higher stretch content (10-15%) means clothing can accommodate a wider size range, sometimes allowing sizing down for a sleeker fit. However, highly stretchy fabrics may relax with wear, especially around knees and elbows. Consider the stretch percentage when between sizes - stretchy fabrics tolerate tighter fits, while non-stretch fabrics need accurate sizing.
Seasonal variations: winter clothing requires different sizing considerations than summer wear. Coats and jackets should accommodate layers underneath, often warranting sizing up. Check shoulder and sleeve measurements carefully for outerwear as these areas need more room. Summer clothing might fit closer to the body, and some people size down in stretchy warm-weather fabrics. Seasonal sales shopping requires imagining fit with appropriate underlayers for the season.
Special sizing categories
Petite sizing: petite sizes are designed for women typically under 5'4" (163 cm) with shorter proportions throughout. Petite clothing features shorter sleeves, inseams, and torso lengths while maintaining the same circumference measurements as regular sizes. A petite size 8 has the same bust, waist, and hip measurements as a regular 8, but everything is proportionally shorter. Many brands now offer petite lines, recognizing this significant market segment.
Tall sizing: tall sizes accommodate women over 5'9" (175 cm) and men over 6'2" (188 cm) with longer limbs and torso. These sizes add length to sleeves, inseams, and rise without increasing circumference measurements. Tall sizing is particularly important for proper fit in pants, dresses, and jackets where regular lengths can look inappropriately short. Online retailers have expanded tall offerings significantly as this segment was traditionally underserved in physical retail.
Plus size and extended sizing: plus size typically begins at US size 14-16 (EU 44-46) and extends to size 30+ depending on the retailer. Plus size clothing isn't simply scaled-up regular sizing; it's designed with different proportions to accommodate how bodies carry weight differently. Many mainstream brands now offer extended sizing, and dedicated plus-size brands provide better fit and style options. The stigma around plus sizing has decreased significantly, with better fashion options and inclusive marketing.
Maternity sizing: maternity clothing uses the same size numbers as regular clothing, sized for pre-pregnancy measurements. The garments include strategically placed stretch panels and additional fabric to accommodate a growing belly while maintaining fit elsewhere. Some women size up in regular clothing during pregnancy, but maternity-specific designs provide better fit and comfort. Maternity sizing accounts for changes throughout pregnancy, with some items suitable for all trimesters and others designed for specific stages.
Cultural and regional sizing preferences
North American sizing trends: American and Canadian sizing tends toward generous fits and size inflation (vanity sizing) where today's size 6 might have been a size 8 or 10 decades ago. This makes historical size comparisons unreliable. Comfort and ease of fit are prioritized, reflecting cultural preferences for practical, relaxed clothing. Athletic and casual wear dominate, influencing even formal clothing to be more comfortable than European equivalents.
European sizing philosophy: European sizing generally maintains more consistent standards with less vanity sizing. European fashion often emphasizes tailored, close-fitting silhouettes, particularly in Mediterranean countries. Northern European countries like Scandinavia tend toward minimalist designs with clean lines. Eastern European brands sometimes differ from Western European standards, reflecting different market histories and consumer preferences.
Asian sizing characteristics: Asian sizing reflects smaller average body proportions and cultural preferences for slim fits. In countries like Japan and Korea, fashion aesthetics often favor petite, delicate looks. This influences not just numeric sizing but design elements like sleeve length, torso length, and shoulder width. Chinese fast fashion brands shipping globally now often specify "Asian size" versus "US/EU size" in their charts.
Fabric properties and sizing
Natural fiber behaviors: cotton can shrink 3-5% with the first wash, especially if not pre-shrunk (sanforized). Quality brands pre-shrink cotton during manufacturing, but budget brands may not. Wool can felt and shrink significantly if washed improperly, so always follow care instructions. Linen relaxes and can stretch slightly with wear. Natural fibers generally breathe better but require more care in sizing selection and maintenance than synthetics.
Synthetic fiber characteristics: polyester, nylon, and other synthetics maintain their shape well and resist shrinking. However, they may not breathe as well as natural fibers. Rayon and modal (semi-synthetic) can shrink similarly to cotton. Synthetic blends aim to combine the best properties of natural and synthetic fibers - cotton-polyester blends offer breathability with shape retention. Understanding fabric content helps predict how garments will fit and age.
Denim considerations: raw or unwashed denim shrinks significantly (up to 10%) with the first wash, so some buyers size up or buy pre-washed. Stretch denim with elastane maintains its shape better than 100% cotton denim, which may bag out with wear. Many denim enthusiasts prefer raw denim that molds to their body over time. Understanding denim types helps in selecting the appropriate size - sanforized, raw, stretch, or pre-washed all fit differently.
Professional and formal wear sizing
Business suit fitting: properly fitted suits require precise measurements beyond standard sizing. Jacket shoulders should sit exactly at your shoulder point without extending past or falling short. Sleeve length should allow 0.5 inch of shirt cuff to show. Jacket length typically covers the seat but varies by style. Pants should break slightly at the shoe. Most quality suits require tailoring adjustments even when buying the correct base size, as bodies rarely match standard proportions exactly.
Formal dress sizing: evening gowns and formal dresses often size smaller than casual clothing from the same brand. They're designed for a more fitted look and may use dress sizing that runs 1-2 sizes smaller. Many formal dresses require alterations for optimal fit, especially for length. When buying formal wear online, measure carefully and consider your undergarments, as formal dresses often require specific shapewear or bras that affect fit.
Professional alterations: a good tailor can transform an approximately sized garment into a perfectly fitted one. Common alterations include hemming pants and sleeves, taking in or letting out waists and sides, and adjusting jacket sleeves and shoulders (more complex and expensive). When shopping for quality pieces, especially professional wear, budget for alterations. A well-fitted $200 suit with $50 in alterations looks better than a $500 suit that doesn't fit properly.
Sustainable sizing practices
Made-to-measure services: custom and made-to-measure clothing eliminates sizing guesswork entirely. Customers provide detailed measurements, sometimes assisted by professional fitters or smartphone apps. The garment is then cut and sewn to those specifications. While more expensive and time-consuming than ready-to-wear, made-to-measure ensures perfect fit and reduces returns and waste. Many brands now offer MTM online, democratizing access to custom clothing.
Rental and resale considerations: clothing rental services and resale platforms require accurate sizing for successful transactions. When renting, check fit guidance carefully as you won't have time for alterations. For resale, accurate listing measurements help buyers make informed decisions and reduce returns. Many resale platforms provide measurement guidelines for sellers. This sector's growth reflects sustainability concerns and changing attitudes toward clothing ownership.
Minimizing returns: clothing returns carry environmental costs through transportation, packaging, and potential waste if items can't be resold. Taking time to measure carefully, read reviews, and understand size charts reduces returns. Some consumers order multiple sizes intentionally, but this practice strains retailer resources and increases environmental impact. Brands increasingly incentivize accurate first-time purchases through loyalty rewards or slightly charging for returns.
Use our comprehensive international clothing size converter to accurately convert between global sizing systems. This professional tool enables confident shopping across European, American, British, and Asian retailers, with detailed charts for women, men, and children. Understanding international size conversions ensures successful purchases from anywhere in the world.