Brand Size Guides

Quick answer:

Size guides and conversion tips for Nike, Adidas, Zara, H&M, and more. Brand-specific fit and conversion.

Find brand-specific size guides and conversion tips. Each guide covers fit philosophy, regional conversion, and how to convert that brand's sizes to US, UK, and EU.

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Other hubs and converters

Frequently Asked Questions

Do brand sizes differ from standard charts?

Yes. Many brands run small or large. Our brand guides describe fit tendencies and how to convert to your region.

Which brands have size guides here?

We cover Nike, Adidas, Puma, Zara, H&M, Shein, Uniqlo, New Balance, ASOS, and Levi's. Use the links above.

Should I size up or down for a brand?

It depends on the brand. Each guide includes fit tips. When in doubt, check the brand's official size chart for the product.

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 Brand Size Guides

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.