Cup Size Visualiser · UK Guide
Cup Size Comparison
Visual comparison of UK bra cup sizes from AA to K.
Side-profile comparison of UK cup sizes AA through F. Each silhouette represents the same body with only the cup projection changing.
Select a Cup Size
Tap any cup size to see its measurement, EU equivalent and fitting notes.
UK Cup Size Measurement Table
Cup size is calculated from the difference between your full bust and your underbust measurement. UK cups differ from EU cups — this table shows both.
| UK Cup | EU Cup | Difference (cm) | Difference (inches) |
|---|---|---|---|
| AA | AA | Less than 2.5 cm | Less than 1 inch |
| A | A | 2.5 cm | 1 inch |
| B | B | 5 cm | 2 inches |
| C | C | 7.5 cm | 3 inches |
| D | D | 10 cm | 4 inches |
| DD | E | 12.5 cm | 5 inches |
| E | F | 15 cm | 6 inches |
| F | G | 17.5 cm | 7 inches |
| FF | H | 20 cm | 8 inches |
| G | I | 22.5 cm | 9 inches |
| GG | J | 25 cm | 10 inches |
| H | K | 27.5 cm | 11 inches |
| HH | L | 30 cm | 12 inches |
| J | M | 32.5 cm | 13 inches |
| JJ | N | 35 cm | 14 inches |
| K | O | 37.5 cm | 15 inches |
Important:UK cup letters and EU cup letters are not the same above a D cup. UK DD = EU E, UK E = EU F, UK F = EU G, and so on. When shopping from a European brand, always check the brand's own size guide.
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Our calculator shows both your UK size and EU equivalent.