Bra Size Calculator
Bra size from measurements.
Result
Band size
34
- Cup size
- C
Common questions
How do I measure my bra size?
Measure your band size around your ribcage just under the bust, and your bust size at the fullest point. The difference between bust and band measurements determines your cup size (1"=A, 2"=B, 3"=C, etc.).
What is a sister size in bras?
Sister sizes have the same cup volume but different band sizes. Going up a band size means going down a cup size (e.g., 34C ≈ 36B ≈ 32D). Useful when your exact size is unavailable.