Conversion chart
Find your size with ease using our simple US/UK cup size conversion chart. Cup sizes from B to D are the same in UK & US.
| US cup size | UK cup size |
|---|---|
| DD/E | E |
| DDD/F | F |
| DDDD/G | G |
| H | H |
| I | I |
| J | J |
| K | K |
| M | M |
Still unsure about your size?
Measure yourself accurately in 3 simple steps and check out the size chart below.
- Stand up straight while wearing your best fitting bra (preferably unlined)
- Band size: Take a snug measurement (inches) around your rib cage directly under your bust and parallel to the floor. Round to the nearest whole number
- Cup size: Take a loose measurement over the fullest part of your bust, making sure you can still breathe. Subtract your band measurement from your bust measurement to find the difference. Round to the nearest whole number. This difference will correspond to a letter, which is your cup size.
Calculate your band size
| Band size UK/US | Measurement (inches) |
|---|---|
| 30 | 26-27 |
| 32 | 28-29 |
| 34 | 30-31 |
| 36 | 32-33 |
| 38 | 34-35 |
| 40 | 36-37 |
| 42 | 38-39 |
| 44 | 40-41 |
| 46 | 42-43 |
| 48 | 44-45 |
Calculate your cup size
| Cup size UK/US | Bust minus Band (inches) |
|---|---|
| B | 7 |
| C | 8 |
| D | 9 |
| E | 10 |
| F | 11 |
| G | 12 |
| H | 13 |
| I | 14 |
| J | 15 |
| K | 16 |