Bra Size Calculator
To find your bra size, measure snugly under your bust for the band and loosely across the fullest part for the bust. Each inch of difference is one cup: 1 inch A, 2 B, 3 C, 4 D, 5 DD, 6 DDD.
Your size
Shop bras in this sizeHow to measure your bra size
- Band. Wear an unpadded bra or none. Measure snugly around your ribcage right under the bust, keeping the tape level.
- Bust. Measure loosely around the fullest part of your bust.
- Cup. Subtract the band size from the bust measurement. One inch is A, two is B, three is C, four is D, five is DD, six is DDD.
Check the fit
The band should sit level and you should fit two fingers under it on the loosest hook. Cups should lie smooth with no gaps or spilling. If the band rides up, go down a band and up a cup (36B to 34C); this is called the sister size.
Prefer no wires? Bralettes use letter sizes from the size guide. Matching lingerie sets let you choose bra and panty sizes separately.
| Underbust | Band | Bust minus band | Cup |
|---|---|---|---|
| 27 to 28 | 32 | 1 | A |
| 29 to 30 | 34 | 2 | B |
| 31 to 32 | 36 | 3 | C |
| 33 to 34 | 38 | 4 | D |
| 35 to 36 | 40 | 5 | DD |
| 6 | DDD |