ASICS Size Guide

Q: Are EU and US shoe sizes the same?

No. EU and US use different scales; use foot length in cm or a trusted converter for equivalents.

Quick answer:

ASICS size guide: brand sizing differences, EU vs US discrepancies, fit type (narrow/wide), and real-world fit tips. Convert ASICS sizes with our tools.

ASICS size guide: brand sizing differences, EU vs US discrepancies, fit type (narrow/wide), and real-world fit tips. Convert ASICS sizes with our tools. Use the sections below to understand how ASICS sizes compare to standard charts, EU vs US differences, fit width, and real-world fit tips. For exact conversions, use our converters linked at the bottom.

Brand sizing differences

ASICS uses its own fit models and lasts; sizes often differ from generic conversion charts. Shoes may run small or large depending on the line.

EU vs US discrepancies

EU and US sizing don't align 1:1. ASICS products sold in Europe may be labeled in EU sizes; when buying from the US site you'll see US sizes. Use our converters below to translate between regions.

Fit type (narrow / wide)

ASICS running shoes come in multiple widths. Standard (D) runs true to size; consider wide (2E) if you have wider feet.

Fit Characteristics

Some users report that this brand may feel true to size in standard width; fit can vary by model. If you experience tightness on the sides despite correct length, consider checking if wide (2E) versions are available for that style.

Real-world fit tips

Measure yourself and compare to ASICS's official size chart for the specific item. When between sizes, many buyers size up for comfort. Read recent customer reviews for fit notes.

Converters

Use our tools to convert between regions and measurements:

Size conversion pages

Direct links to specific conversion pages:

Other brand guides

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 ASICS Size Guide

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.