Calculate your bra band and cup size from two simple measurements: your underbust, taken snugly just below the breasts, and your bust, taken across the fullest point. The band size comes from the underbust measurement rounded to a whole even number, and the cup size comes from the difference between bust and band, where roughly every inch of difference steps you up one cup letter. Enter both measurements in inches or centimeters, and this tool returns your US band and cup along with the total label such as 34C. Bra fit is personal and brands cut differently, so treat the result as a well grounded starting point and try sister sizes if the band feels tight or loose. Everything is computed locally in your browser and nothing you enter is stored or sent anywhere, with the size updating instantly as you type.
Calculate your bra band and cup size from two simple measurements: your underbust, taken snugly just below the breasts, and your bust, taken across the fullest point. The band size comes from the underbust measurement rounded to a whole even number, and the cup size comes from the difference between bust and band, where roughly every inch of difference steps you up one cup letter.
Yes. Bra Size Calculator is completely free, with no sign-up and no usage limits.
Yes. Bra Size Calculator runs in any modern web browser. There is nothing to download or install.
Yes. Bra Size Calculator runs entirely on your device in your browser, so nothing you enter is uploaded to a server.