NBNumbarn

Bra Size Calculator

Adjust the inputs below. Results update as you type.

How it works

Band size = measurement around the ribcage just under the bust, rounded to nearest even number. Cup size = bust measurement minus band measurement: 1 inch = A, 2 = B, 3 = C, 4 = D, etc. Sizing varies by brand—always try before buying. Sister sizes (same cup volume, different band) can help when your size isn't available.

Very rough US-style band + cup from underbust and bust (in).

32C

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