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Bra Size Calculator

Our online tools will provide quick answers to your calculation and conversion needs. On this page, you can calculate correct bra size with cup sizes from the size of your band and the bust.

Result window

To find band size, run a tape measure around the rib cage directly under the bust. Pull the tape about as snug as the bra should be.
To find bust size, measure around fullest part of the bust.

Bra size calculation

Our calculation is based on Avon UK fit specifications. There are conflicting standards by different manufacturers and therefore it is hard to formulate for the right bra size. Check this link for more information on bra size/ cup sizes. If you are in doubt, try to google brand-name bra size or better still, try it for the right fit.

Also, know your

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