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Bra Size Calculator

Calculate your bra size based on band and bust measurements

Calculate Bra Size

How to Use

  1. Measure your band size (under-bust)
  2. Measure your bust size (fullest part)
  3. Enter measurements
  4. View your bra size and sister sizes

How to Measure

Proper measurement is key to finding the right bra size. Measure snugly but not tight.

Understanding Sister Sizes

Sister sizes have the same cup volume but different band sizes. They're useful for finding better fit.

Fit Tips

  • Band should be snug but comfortable
  • Cups should fully contain breast tissue
  • Straps shouldn't dig into shoulders
  • Try sister sizes if between sizes

Frequently Asked Questions

How accurate is this calculator?
This calculator provides a good starting point based on standard sizing. Professional fitting is recommended for best results.
What are sister sizes?
Sister sizes have the same cup volume but different band sizes. For example, 34C, 36B, and 32D are sister sizes.
Should I measure with or without a bra?
Measure without a bra or with an unpadded bra for most accurate results.

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