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Bra Size Calculator

Quick answer

Enter your under-bust band and full bust in inches. The difference sets the cup: 1 in is A, 2 in is B, 3 in is C, 4 in is D. A 30 in band and 34 in bust returns 30D (UK and India 30D, EU 65D).

Bra Size Calculator featured image
Featured image placeholder: add /assets/img/bra-size-calculator.webp (1200x630).

Cup size by difference

Cup size by difference
Difference (in)USUKIndiaEU
0AAAAAAAA
1AAAA
2BBBB
3CCCC
4DDDD
5DD-EDDDDE
6DDD-FEEF
7GFFG
8HFFFFH
9IGGI
10JGGGGJ
11KHHK

Need to measure first? Follow how to measure your bra size.

Frequently asked questions

How is the cup calculated?
Bust minus band, in inches, matched to the cup chart.

Related guides

Sources and further reading