UK Bra Size Guide
Complete UK bra size chart covering all band sizes 28–46 and cups AA to K. Use the visual chart below or our calculator for your exact size.
Full UK Bra Size Chart
Cells in pink = available in most UK retailers. ✓ = common size.
| Band → Cup ↓ | 28 | 30 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 |
|---|---|---|---|---|---|---|---|---|---|---|
| AA | 28AA | 30AA | 32AA | 34AA | — | — | — | — | — | — |
| A | 28A | 30A | 32A | 34A | 36A | — | — | — | — | — |
| B | 28B | 30B | 32B | 34B | 36B | 38B | — | — | — | — |
| C | 28C | 30C | 32C | 34C | 36C | 38C | 40C | — | — | — |
| D | 28D | 30D | 32D | 34D | 36D | 38D | 40D | 42D | 44D | 46D |
| DD | 28DD | 30DD | 32DD | 34DD | 36DD | 38DD | 40DD | 42DD | 44DD | 46DD |
| E | 28E | 30E | 32E | 34E | 36E | 38E | 40E | 42E | 44E | 46E |
| F | 28F | 30F | 32F | 34F | 36F | 38F | 40F | 42F | 44F | 46F |
| FF | 28FF | 30FF | 32FF | 34FF | 36FF | 38FF | 40FF | 42FF | 44FF | 46FF |
| G | 28G | 30G | 32G | 34G | 36G | 38G | 40G | 42G | 44G | 46G |
| GG | 28GG | 30GG | 32GG | 34GG | 36GG | 38GG | 40GG | 42GG | 44GG | 46GG |
| H | 28H | 30H | 32H | 34H | 36H | 38H | 40H | 42H | 44H | 46H |
| HH | — | 30HH | 32HH | 34HH | 36HH | 38HH | 40HH | 42HH | 44HH | 46HH |
| J | — | — | 32J | 34J | 36J | 38J | 40J | 42J | 44J | 46J |
| JJ | — | — | — | 34JJ | 36JJ | 38JJ | 40JJ | 42JJ | 44JJ | 46JJ |
| K | — | — | — | — | 36K | 38K | 40K | 42K | 44K | 46K |
Availability varies by retailer. Bravissimo and specialist stores offer the widest size range.
Understanding UK Bra Sizes
Band Size (The Number)
The number in a UK bra size (e.g. 34C) is the band size. It's measured in inches around your underbust. UK band sizes run in even numbers: 28, 30, 32, 34, 36, 38, 40, 42, 44, 46.
Cup Size (The Letter)
The letter (e.g. 34C) is the cup size. It's determined by the difference between your bust and underbust measurements. UK cup sizes: AA, A, B, C, D, DD, E, F, FF, G, GG, H, HH, J, JJ, K.
Most Popular UK Bra Sizes
The most commonly sold UK bra sizes. If your size isn't here, you're not alone — most women wear the wrong size!
Cup Size Visual Comparison
Visual guide to UK cup sizes AA through G. For the full visualiser, visit our Cup Size Comparison tool.
Not sure of your size?
Use our free AI-powered calculator to find your perfect UK bra size in seconds.