simplified sizing, Superior fit.

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Bra Sizing Calculator

How to Measure

  1. While wearing a regular bra (no sports or compression bra), measure around your ribcage in inches. This is your band measurement.
  2. Measure across the fullest part of your bust in inches.
  3. The calculator will determine your cup size based on the difference between these measurements.
Example: If the band is 34″ and the bust is 38″, the difference is 4″. Each inch represents a cup size, you are a 34D and your size would be 32-36D in Betterly.
Illustration of a person measuring bust and underbust with a tape measure for bra fitting.