Bra Size Calculator
Enter your band measurement (snug around your ribcage under the bust) and your bust measurement (around the fullest part) in inches to estimate your bra size.
Estimated Cup Size Difference
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About this calculator
Calculate your bra band size, cup size, and overall size estimate using your band and bust measurements in inches.
Frequently Asked Questions
How do I measure my band size?
Wrap a measuring tape snugly around your ribcage directly under your bust, keeping the tape level and parallel to the floor.
How do I measure my bust?
Wrap the tape around the fullest part of your bust, keeping it level, while wearing a well-fitting non-padded bra.
Why does this only give an estimate?
Bra sizing varies by brand and style, so this calculator gives a helpful starting point rather than an exact fit.