US Size 5.5 to UK Shoe Size Converter
Quick answer:
A US shoe size 5.5 converts to UK size 3.5. Typical foot length for this label is often about 25–29 cm depending on brand—measure your foot in cm for the best match.
See also: CM to US converter · Shoe size converter · Measurement standards
Convert US shoe size 5.5 to UK sizes instantly. Get accurate women's conversions and see equivalent sizes in all regions.
Converted Sizes
Popular conversions
Conversion Guide
US size 5.5 converts approximately to UK women's size 3.5. Use the converter above to see all regional equivalents and confirm your fit.
Understanding This Conversion
How UK shoe sizes differ from US and EU. Conversion and regional comparison guide.
For more detail, read our guides on regional differences, how to measure your feet, and common sizing mistakes.
Fit Guide
Fit can vary by brand and style:
- European brands often run slightly narrower; consider half a size up if you have wide feet.
- US and UK sizes may offer more width options (N, M, W).
- Asian sizing (JP/CN) typically runs smaller—sizing up is common when converting from US or UK.
When in doubt, check the brand's size chart or order two sizes and return one.
How to Measure Your Foot
Measure your foot length in centimeters for the most accurate conversion:
- Place a piece of paper against a wall on a hard floor.
- Stand with your heel touching the wall and mark the tip of your longest toe.
- Measure from the wall to the mark in centimeters.
- Repeat for both feet and use the larger measurement.
Foot length in CM is the most reliable reference across all regional sizing systems.
Fit and sizing explained
Fit Problems Explained
Step-by-step guide to measuring foot length in centimeters for accurate shoe size conversion. Avoid common shoe sizing mistakes when converting between regions. Fit tips and conversion best practices.
How to Measure Your Feet in CM · Common Shoe Sizing Mistakes
Why Sizes Vary
Understand how shoe sizing systems work across US, UK, EU, Japan, and CM. Educational guide with conversion references. Avoid common shoe sizing mistakes when converting between regions. Fit tips and conversion best practices.
Brand Differences
Brands use different lasts and fit models. Nike often runs small; Adidas and Puma can differ by style. Always check the brand's size chart before ordering.
Regional Differences
Why European and US shoe sizes use different scales. Regional differences and conversion explained. How Japanese shoe sizing works and how to convert to US, EU, and UK. Japan size chart explained. How UK shoe sizes differ from US and EU. Conversion and regional comparison guide.
Why EU and US Shoe Sizes Differ · How Japanese Shoe Sizes Work · How UK Shoe Sizes Differ From US and EU
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- CM 21 to EU
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Region Converters
- EU to US Shoe Size
- US to EU Shoe Size
- US to UK Shoe Size
- UK to US Shoe Size
- UK to EU Shoe Size
- CM to US Shoe Size
- CM to EU Shoe Size
- CM to UK Shoe Size
- Inch to US Shoe Size
- Inch to EU Shoe Size
- Japan to US Shoe Size
- Japan to EU Shoe Size
- EU to Japan Shoe Size
- US to Japan Shoe Size
- China to US Shoe Size
- China to EU Shoe Size
- Korea to US Shoe Size
Frequently Asked Questions
What is US 5.5 in UK shoes?
US size 5.5 typically converts to UK size 3.5. Use the converter above for your exact gender and to see other regions.
Is US sizing bigger than UK?
US and UK use different scales. The converter above gives the exact equivalent; sizes are not directly comparable.
Are shoe sizes standardized?
No. Shoe sizes vary by country and brand. Conversion charts give approximate equivalents; always check the brand's size chart when ordering.
Should I size up or down?
It depends on the brand. European and Asian brands often run smaller. If between sizes or ordering athletic shoes, consider sizing up. Check reviews and the brand's fit guide.
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GlobalSizeChart.com is an independent utility for size conversion. Our content is educational and our sizing data is compiled from public standards.
- Independent Utility Tool — Free converters and charts, not affiliated with any retailer or brand.
- No brand affiliation — We are not owned by or paid by any clothing or shoe brand.
- Educational content — Guides and explanations are for information only; always check the brand's size chart when possible.
- Sizing data compiled from public standards — Conversions are based on widely published international sizing standards; individual brands may differ.
Common questions
Is this conversion the same for every brand?
No—brands use different lasts and fits. Use this chart as a starting point and check the brand’s own size guide when you can.
How accurate are shoe size conversions?
Standard tables map foot length across regions; real fit still varies by width, materials, and design. Measuring your foot in cm is the most reliable cross-check.
Where does the centimeter value come from?
We anchor sizes to typical foot-length ranges used in international sizing references; always measure both feet and use the longer one.
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.
See also
Shoe Size Converter · Knowledge hub · Guides · Measurement standards