How do I convert UK size to US size?

Use our converter tool above. For shoes, UK sizes are typically 1 size smaller than US. For clothing, UK uses different numeric sizes than US.

What is UK size 8 in US?

UK men's shoe size 8 typically converts to US men's size 9. Use our converter for precise conversions based on gender and category.

UK to US Size Converter

Quick answer:

Convert UK sizes to US sizes for shoes and clothing. Free UK to United States size conversion tool with accurate charts.

Convert UK sizes to United States (US) sizes for shoes and clothing. Get accurate conversions with our free size converter tool.

Converted Sizes

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UK to US Size Conversion Guide

Converting between UK and US sizes requires understanding the differences in sizing systems:

UK to US Shoe Sizes

UK shoe sizes are typically 1 size smaller than US sizes. For example:

UK Men's 8 = US Men's 9
UK Women's 5 = US Women's 7
UK Men's 9 = US Men's 10
UK Women's 6 = US Women's 8

UK to US Clothing Sizes

UK clothing uses different numeric sizing than US:

Women's: UK 8/10/12/14 converts to US 4/6/8/10
Men's: UK and US use similar letter sizes (S/M/L/XL) but measurements may differ
Pants: UK waist sizes are similar to US but may have slight variations

Important: These are approximate conversions. Always check brand-specific size charts when available, as sizing can vary significantly between manufacturers.

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Common questions

How should I use this converter?

Pick your region and size, then read the equivalents. When in doubt, measure in centimeters and compare to the brand chart.

Why do sizes differ between countries?

Each region uses its own scale; mapping through foot length (cm) reduces error.

More on UK to US Size Converter - Convert UK to United States Sizes

See linked guides on this site for measurement tips and regional differences.

Data sources

ISO and regional footwear sizing references (length-based mapping)
Published brand size charts (e.g. Nike, Adidas) for cross-checks—not endorsements
International measurement and apparel sizing studies (public summaries)

Why Sizes May Vary

Shoe and clothing sizes can vary between brands due to manufacturing differences, materials, and regional sizing standards.

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.