BraSizeConversion

Choosing a Bra: What to Look For

These guides describe what to look for rather than what to buy: this site carries no affiliate links and sells nothing. Each guide is organized by band and cup range, because the construction that excels at 34B and the construction that excels at 40G are different.

Before you shop

Get the size right first with the calculator, translate to the brand's dialect with the decoder, and judge arrivals with the 10 checks. A well-built bra in the wrong size is still the wrong bra.

Written by the BraSizeConversion fit team. Last updated August 2026.