Lookup

Bra Size by Bust Measurement

Know your bust measurement but not your size? Pick it below, then find your underbust row. Have the underbust instead? Underbust lookup → · in centimeters: bra size in cm →

What bust size means →

Bust measurementinches

30″31″32″33″34″35″36″37″38″39″40″41″42″43″44″45″46″47″48″49″50″

Remember: the bust alone can't give a size. Each page lists every size that bust can be, by underbust.

Shop itAt HauteFlair, our sister retailer

Shop bras by size once you know it →

Opens HauteFlair’s own hub page; use your measured size there. HauteFlair is owned by the same company as Brasize.ai; that relationship never changes the sizing math, charts, or fit advice on this page. How this site makes money.

Or just measure

Two numbers, one exact size, in under a minute.

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