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Bra Size Calculator

Bust minus band circumference.

Choose a bra workflowEstimate a cup index or convert band and cup sizing across regions.
2 options
ESTIMATED BRA SIZE34D

Band 34; bust-minus-band difference 4.0; cup sequences vary by brand.

Estimate based on the values shown
Formula checkedCup index is bust minus band; regional bands convert through centimeters.
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