Fit by brand

Brand Shoe Size Guides

Conversion charts are only the starting point. Brand shape, width, material and category can all change how a shoe feels on foot.

Nike

Nike sizing is often consistent for trainers, but performance shoes can feel snug through the midfoot or toe box.

Adidas shoes are usually predictable, but classic silhouettes and performance models can fit differently.

New Balance is useful for shoppers searching for a width chart, because many models are available in standard, wide and extra-wide options.

Dr. Martens sizing can feel different from trainers because many boots are firm at first and some styles are sold in whole sizes.

Birkenstock fit depends heavily on footbed length and width, so EU size plus narrow/regular width is important.

Clarks kids sizing is built around growing feet, so measurement and width are more important than a straight conversion.

ASOS size guidance can vary because ASOS sells own-label shoes alongside many brands, including trainers, heels, boots and fashion footwear.

Zara shoes are trend-led, so the size guide is only part of the fit decision: shape, toe style and material can all change how the shoe feels.