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    Convert any size between US, UK, EU and CM instantly — then check the chart for 100+ brands.

    US (Men) 9EU 42.5

    Conversions are standards-based. Individual brands still vary — check the brand chart before ordering.

    100+ brands Verified charts US · UK · EU conversions

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    How We Build Our Size Charts

    Sourced from brands

    Every chart starts from the brand's own published size guide, with measurements copied exactly as the brand lists them.

    Converted consistently

    We record measurements in both inches and centimetres so US, UK and EU equivalents line up across every chart.

    Reviewed on a schedule

    Charts are re-checked quarterly, and sooner when a brand publishes a revised size guide. Review dates are shown on each brand page.

    From the Blog

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    Shoes

    Complete Shoe Size Conversion Guide (US, UK, EU, CM)

    Convert any shoe size between US, UK, EU and centimeters — plus men's to women's, women's to men's, and sock sizes, all in one chart.

    5 min read
    Sizing

    What Size Am I? Letter Sizes to Numbers, Explained

    XS to XXL translated into US numeric sizes, chest and waist inches, and the men's-to-women's equivalents for pants and shirts.

    4 min read
    Accessories

    Accessory Size Charts: Rings, Hats & Gloves

    Measure once and buy right: ring, hat and glove size charts with US, UK and EU equivalents and at-home measuring methods.

    4 min read
    Kids

    Kids & Baby Clothing Size Guide by Age

    Baby sizes by age and weight, toddler and kids clothing charts, and average kids shoe sizes by age — with growth-room guidance.

    4 min read
    Sizing

    Specialty Sizing: Plus, Petite & Tall Explained

    How plus, petite and tall sizing actually differ from regular sizing — full conversion charts and the brands that do each best.

    4 min read
    Education

    Why Clothing Sizes Differ Between Brands

    Ever wondered why a Medium at Nike fits differently than at Zara? We break down the history and science behind inconsistent sizing.

    4 min read
    Guide

    How to Measure Yourself Correctly for Online Shopping

    Chest, waist, hips, inseam and bra size — a step-by-step guide to taking measurements that match the size charts.

    4 min read
    Recommendations

    Best Fitting Brands for Different Body Types

    From petite to plus-size, discover which brands consistently deliver the best fit for your body type.

    4 min read
    Education

    US vs EU Sizing Explained: A Complete Guide

    US, UK, EU and Asian sizing side by side for clothing and shoes, plus men's to women's conversions.

    4 min read
    Fit

    How Jeans Should Fit (Men and Women)

    Where jeans should sit, how much room to leave, and how to find your size from waist and inseam without trying them on.

    5 min read
    Men

    Men's Suit Size Chart and Fit Guide

    Suit sizes are chest measurement in inches plus a length code (S/R/L). Full chart and tailoring tips.

    4 min read
    Sizing

    Dress Size by Measurements (US Women's Chart)

    US dress size 4 = 34-26-37. Full bust-waist-hip chart from XS to 3X with fit guidance.

    4 min read
    Comparison

    Lululemon vs Athleta Sizing: Side-by-Side Comparison

    How Lululemon sizing compares to Athleta for leggings, sports bras, and activewear — measurements, fit notes, and which runs smaller.

    4 min read

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