Bra Size Converter
Convert a US bra size to UK, European, French/Spanish and Australian sizes. Band and cup letters both change between systems.
How to use the Bra Size Converter
- Enter your US band size.
- Choose your US cup size.
- Read the international equivalents.
How it works
US and UK band sizes are the same numbers in inches; European bands are in centimeters (32 → 70, 34 → 75…), French and Spanish add 15 to the EU band, and Australian bands subtract 22 from the US size. Cup letters match up to D, then diverge: US DD = UK DD = EU E, US DDD/F = UK E = EU F, and so on. Brands vary, so use these as a starting point and check fit.
Band sizes
| US / UK | EU | FR / ES | AU |
|---|---|---|---|
| 30 | 65 | 80 | 8 |
| 32 | 70 | 85 | 10 |
| 34 | 75 | 90 | 12 |
| 36 | 80 | 95 | 14 |
| 38 | 85 | 100 | 16 |
| 40 | 90 | 105 | 18 |
| 42 | 95 | 110 | 20 |
Frequently asked questions
What is a 34C in UK sizes?
34C — the same up to D cup.
What is 34DD in EU sizes?
75E.
How do I measure my band size?
Measure snugly around your ribcage under the bust in inches; round to the nearest even number.
Why do sizes differ between brands?
There is no single enforced standard, so fit varies by brand and style.