Guide

The Ultimate Sneaker Sizing Guide: Never Order the Wrong Size Again

Mar 5, 2026USFans Team
The Ultimate Sneaker Sizing Guide: Never Order the Wrong Size Again

Brand-by-brand sizing breakdown with cm measurements, width advice, and country conversion tables for every major sneaker model.

Ordering the wrong size is the #1 reason buyers regret a purchase. And it is completely preventable. This guide covers brand-specific sizing quirks, width considerations, and country conversions so you can order with confidence every time.

Start With CM Measurements

Your foot length in centimeters is the only universal measurement. Do not rely on your "usual size" because Nike and Adidas use different lasts, and replica factories sometimes have their own sizing quirks. Stand on a piece of paper, trace your foot, and measure from heel to longest toe.

CMUS MenUS WomenUKEU
24.56.58639
25.078.56.540
26.089.57.541
27.0910.58.542.5
28.01011.59.544
29.01112.510.545

Brand-Specific Sizing Quirks

How Brands Fit
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Nike Dunk LowTrue to sizeSlightly narrow
Jordan 1 HighTrue to sizeTTS or +0.5 for wide feet
Yeezy 350 V2Size up 0.5Very snug primeknit
New Balance 550True to sizeRoomy toe box
Adidas SambaSize down 0.5Runs long
Width Warning

If you have wide feet (E or EE), always add 0.5 to your size for Jordan 1s and Dunks. Yeezys are already narrow, so wide-footers should consider sizing up a full size or avoiding the model entirely.

When in doubt, ask the seller for the insole measurement in centimeters. Most Weidian sellers will measure the insole for you if you ask in the order notes. That one measurement eliminates 90% of sizing risk.

Frequently Asked Questions

Replicas generally follow the same sizing as retail, but factory variations exist. Always check the batch-specific sizing notes in the USFans Spreadsheet before ordering.