Last updated: 14 October 2026
whatsizetobuy is an independent English-language fit guide site operated by Alper Bülent. We answer “does it run big or small?” at the model and cut/line level — not just brand averages or generic US↔EU charts.
Generic converters are everywhere. What shoppers still struggle to find is whether this last or cut runs long, short, narrow, or true to size. That is our focus: original, structured fit pages plus converters and brand comparisons.
Fit advice is editorial, not paid placement. Amazon shopping links (tag whatsizetobuy-20) may earn a commission; they do not buy a verdict. See the affiliate disclosure.
We label uncertainty on purpose. Fit verdicts are editorial hypotheses, not a claim that we measured every SKU in a lab. Confidence badges (Draft / Partial / Verified) reflect how many independent sources agree — see methodology. We never bulk-upgrade confidence. We are not affiliated with the shoe or clothing brands we write about.
Tools: size converter, brand comparisons, family sizing guides, clothes guides.
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