Journal
The reference for international sizing
Editorial guides, brand-specific fit notes and how-to articles from the SizeAtlas team. Everything you need to buy the right size, anywhere in the world.
Featured
Shoe Sizing
Shoe Width Charts Explained: Width, Girth and Fit
Shoe width is separate from shoe length. Learn how to read width charts without assuming that a letter or millimeter value fits every brand.
2 min read
Shoe Sizing
CM on a Shoe Box Is Not Always Your Foot Length
A CM or JP label can differ from measured foot length. Use the brand’s heel-to-toe column rather than treating a box label as a universal ruler.
2 min read
Shoe Sizing
How to Read Unisex Shoe Size Labels
Unisex is a product category, not one worldwide size scale. Identify the base size system, conversion row and width before choosing a pair.
2 min read
Browse by category
Shoe Sizing
7 articlesHow US, UK, EU and Mondopoint systems relate — and where they don't.
Clothing Sizing
6 articlesCountry-by-country breakdowns of numeric and letter sizing.
Brand Guides
3 articlesHow specific brands actually fit, in plain language.
Buying Guides
3 articlesPractical advice for ordering online across borders.
Fit & Measurement
10 articlesMeasure yourself once, buy correctly forever.
Kids & Baby Sizes
3 articlesAge, height, and shoe size charts for growing feet.
Sports & Outdoor
1 articleRunning, hiking, cycling — sizing rules that differ from streetwear.
International Shopping
3 articlesConfidence when buying from another country.
All articles
Shoe Sizing
Shoe Width Charts Explained: Width, Girth and Fit
Shoe width is separate from shoe length. Learn how to read width charts without assuming that a letter or millimeter value fits every brand.
2 min read · Updated October 27, 2026
Shoe Sizing
CM on a Shoe Box Is Not Always Your Foot Length
A CM or JP label can differ from measured foot length. Use the brand’s heel-to-toe column rather than treating a box label as a universal ruler.
2 min read · Updated October 27, 2026
Shoe Sizing
How to Read Unisex Shoe Size Labels
Unisex is a product category, not one worldwide size scale. Identify the base size system, conversion row and width before choosing a pair.
2 min read · Updated October 27, 2026
Buying Guides
Between Shoe Sizes? How to Choose Without Guessing
Being between sizes does not always mean sizing up. Compare measured length, width and the product’s own fit instructions before ordering.
2 min read · Updated October 27, 2026
Fit & Measurement
Buying Shoes When Your Feet Are Different Sizes
Measure both feet and fit the larger one. Check length and width separately, then make sure the smaller foot is still held securely.
2 min read · Updated October 27, 2026
Fit & Measurement
How Socks Change Shoe Fit
Try shoes with the socks you actually plan to wear. Sock thickness changes available space, so a barefoot fitting can be misleading.
2 min read · Updated October 27, 2026
Clothing Sizing
Body Measurements vs Garment Measurements
A size chart may describe your body or the finished garment. Learn the difference before comparing chest, waist and hip numbers.
2 min read · Updated October 27, 2026
Clothing Sizing
How to Read a Clothing Size Chart
Check the market, units and measurement type before choosing a clothing size. S, M and L are only labels for that particular chart.
2 min read · Updated October 27, 2026
Fit & Measurement
Pit-to-Pit Measurements: How to Measure a Shirt
Pit-to-pit is a flat garment width, not a body circumference. Measure a comparable shirt correctly before using a product chart.
2 min read · Updated October 27, 2026
Fit & Measurement
How to Measure Your Inseam for Trousers
Inseam measures the inside leg, not your height or the full trouser length. Use a pair with the right hem position as a reference.
2 min read · Updated October 27, 2026
Clothing Sizing
Jeans W and L Labels: Waist vs Inseam
A jeans label such as W32 L30 usually refers to waist and inside-leg length in inches, but actual fit still depends on the product chart.
2 min read · Updated October 27, 2026
Clothing Sizing
Trouser Rise Explained: Low, Mid and High Rise
Rise affects where trousers sit and how the waist feels. Compare the measurement and silhouette, not just the size number.
2 min read · Updated October 27, 2026
Fit & Measurement
Shirt Sleeve Measurements: Shoulder vs Center Back
Sleeve lengths can start at the shoulder or the center back. Identify the method before comparing a shirt to a size chart.
2 min read · Updated October 27, 2026
Buying Guides
Between Clothing Sizes: Choosing by Fit and Fabric
When body measurements point to different sizes, look at the constrained area, stretch and intended silhouette rather than applying one rule.
2 min read · Updated October 27, 2026
Brand Guides
UNIQLO’s Updated Women’s Body Size Charts: What Changed
UNIQLO US says women’s body-measurement labels were revised from Fall/Winter 2025. A changed chart does not necessarily mean a changed garment.
2 min read · Updated October 27, 2026
Kids & Baby Sizes
Baby Clothing Sizes: Use Measurements, Not Age Alone
Age labels are a starting point for baby clothing. Use the retailer’s height and body-measurement chart for a more useful comparison.
2 min read · Updated October 27, 2026
Kids & Baby Sizes
Children’s Clothing: Height Labels vs Age Labels
Height labels and age labels answer different questions. Match your child’s measurements to the product chart rather than converting age by formula.
2 min read · Updated October 27, 2026
Fit & Measurement
Bra Sister Sizes Explained: Similar Cup Volume, Different Band
Sister sizes change band and cup together. They are a useful fit comparison, not a guarantee that different bras will feel identical.
2 min read · Updated October 27, 2026
Fit & Measurement
Bra Band Conversion Is Not the Same as Measuring a Band
Converting an existing bra label and estimating a new size from under-bust measurements are different tasks. Keep the methods separate.
2 min read · Updated October 27, 2026
International Shopping
Buying Clothes From Another Country: A Size-Chart Checklist
Use measurements and the regional product chart when shopping across borders. Country labels alone cannot predict how a garment will fit.
2 min read · Updated October 27, 2026
Shoe Sizing
US vs EU Shoe Sizes Explained
US and EU shoe labels use different increments. Conversion is approximate and manufacturer-specific, not a universal equation.
2 min read · Updated October 27, 2026
Fit & Measurement
How to Measure Your Feet Correctly
Measure both feet in consistent conditions, then use the manufacturer’s measured-foot guidance to find a starting size.
2 min read · Updated October 27, 2026
Shoe Sizing
Why Shoe Sizes Differ Between Countries
Shoe systems use different measurement scales and label conventions. The brand’s current conversion chart matters more than a guessed country offset.
2 min read · Updated October 27, 2026
Shoe Sizing
Men's vs Women's Shoe Sizes
Men’s and women’s US labels often differ for a shared shoe, but the offset and construction depend on the manufacturer.
2 min read · Updated October 27, 2026
Kids & Baby Sizes
Children's Shoe Size Guide
Children’s shoe sizes are best chosen from measured feet and the brand’s fitting guide. Age is not a reliable size measurement.
2 min read · Updated October 27, 2026
Clothing Sizing
US Clothing Sizes Explained
US clothing sizes are manufacturer labels, not universal body measurements. Use the current brand chart and relevant product dimensions.
2 min read · Updated October 27, 2026
Clothing Sizing
European Clothing Sizes Explained
European clothing labels vary by brand and country convention. Measurement standards do not guarantee one mandatory EU numeric chart.
2 min read · Updated October 27, 2026
Buying Guides
How to Buy Shoes Online Without Trying Them On
Buying shoes online is easier when you measure both feet, use the current product chart and understand the return conditions.
2 min read · Updated October 27, 2026
Brand Guides
Nike Size Guide
Nike fit depends on the silhouette, category and width. Use current official model guidance rather than a blanket lifestyle size-down rule.
2 min read · Updated October 27, 2026
Brand Guides
Adidas Size Guide
adidas fit depends on the model and preference. Samba generally fits true to size; a blanket half-size reduction is not reliable.
2 min read · Updated October 27, 2026
International Shopping
Japanese Sizes Explained
Japanese footwear commonly uses metric labels, while clothing uses product-specific numbers and letters. Compare the regional chart rather than a fixed count
2 min read · Updated October 27, 2026
Shoe Sizing
Mondopoint Explained: Metric Shoe Sizing
Mondopoint is a measurement-based footwear sizing system. It does not make every retail CM or JP label equal to your measured foot length.
2 min read · Updated October 27, 2026
Fit & Measurement
How to Measure Your Bra Size Correctly
Bra measurements provide a starting point, not an exact universal fit. Follow one manufacturer’s method instead of mixing band and cup formulas.
2 min read · Updated October 27, 2026
Fit & Measurement
How to Measure Your Ring Size at Home
Use a ring that fits the intended finger or a proper ring sizer, then compare the jeweler’s chart. Home measurements are approximate.
2 min read · Updated October 27, 2026
Sports & Outdoor
Running Shoe Sizing Is Different
Running shoes need comfortable toe room and secure hold. Use the actual model and fit check rather than a universal distance-based size-up rule.
2 min read · Updated October 27, 2026
International Shopping
Italian Sizing Guide
Italian clothing labels need a brand-specific chart. IT 40, EU 36, US 4 and UK 8 are equivalents in Gucci’s women’s dresses and tops chart—not a universal ru
2 min read · Updated October 27, 2026