Different scales
US, UK, EU, and JP labels rarely describe the same foot length in millimeters.
US Size Conversion Tools
Converted Sizes
Quick Converters
Shoe Size Converter
Convert shoe sizes between US, UK, EU, Japan, China, and CM.
Clothing Size Converter
Convert clothing sizes for tops, pants, and dresses across regions.
CM to US Shoe Size
Convert foot length in centimeters to US shoe sizes.
US to EU Size
Convert US sizes to European sizing standards.
UK to US Size
Convert UK sizes to US equivalents.
EU to US Size
Convert European sizes to US sizing.
Mattress Size Chart
Compare mattress sizes across US, UK, and EU.
Measurement Tools
Explore unit conversions and measurement standards.
United States sizing differs significantly from UK and EU standards, especially in footwear. American brands often use unique width classifications and relaxed clothing fits.
US Size Conversion Tools
The United States uses a distinct sizing system for both footwear and clothing that does not directly align with UK or EU standards. In footwear, US sizing differs between men and women, and width classifications (such as D, EE, and B) play a significant role in achieving proper fit. American brands also vary in how they interpret half sizes, making conversion tables essential when purchasing internationally.
US shoe sizes typically increase in consistent increments, but the baseline differs from the UK system by approximately one full size for men and one to one-and-a-half sizes for women. European sizing, on the other hand, is based on a Paris point system measured in centimeters, which does not convert linearly from US numbers. This structural difference is why many shoppers experience confusion when ordering from overseas retailers.
Clothing sizes in the US follow a mix of numeric and letter-based systems. Women's apparel often uses numeric sizing (2, 4, 6, etc.), while men's garments rely heavily on measured dimensions such as waist and inseam in inches. International conversion requires accurate body measurements rather than simple number matching.
Our US size converters default to American standards and allow you to accurately convert to UK, EU, Japan (JP), and centimeter-based systems. Whether purchasing sneakers, formal shoes, denim, or international brand apparel, using precise conversion logic reduces return rates and sizing errors.
For best results, measure foot length in centimeters and compare it against standardized tables before converting. American sizing is brand-sensitive, so always cross-reference with measurement-based guidance—see our Nike sizing guide and New Balance sizing guide for US brand differences. Use our main shoe converter for quick conversions.
Quick Converters
Shoe Size Converter
Convert US shoe sizes to UK, EU, Japan, China, and CM.
Clothing Size Converter
Convert US clothing sizes across all regions.
US to EU Size
Convert US sizes to European Union sizes.
UK to US Size
Convert UK sizes to US for international shopping.
CM to US Shoe Size
Convert foot measurements in centimeters to US shoe sizes.
US Size Conversion FAQs
Are US and UK shoe sizes the same?
No. US men's shoe sizes are typically one size larger than UK men's sizes. For women, the difference is usually one to one-and-a-half sizes.
How do I convert US shoe size to EU?
US shoe sizes convert to EU sizes using standardized Paris point increments. However, the conversion is not perfectly linear and may vary slightly by brand.
Why do US shoe widths matter?
US footwear commonly uses width classifications like D, EE, and B. Many international systems do not include width letters, which can affect fit.
Do US clothing sizes match international sizes?
No. US clothing sizes often differ from UK and EU equivalents. Numeric sizes do not directly translate and require measurement comparison.
Should I measure my foot before converting?
Yes. Measuring foot length in centimeters provides the most accurate basis for international shoe size conversion.
Explore More Size Guides
Compare With Other Regions
Why sizes don’t line up everywhere
Brand lasts
Two brands can label the same length differently based on shape and materials.
Use centimeters
Measuring both feet in cm is the most reliable way to cross-check any chart.
Frequently Asked Questions
What is EU 42 in US shoe size?
EU 42 typically converts to US men's size 9 and US women's size 10.5, depending on brand and width. Use any converter on this page when available.
Are EU and US shoe sizes the same?
No. The EU sizing system and US shoe sizing scale use different scales. International shoe size conversion is most reliable when you anchor to foot length in cm.