What do the number and letter mean?
UK and US band labels are usually the same, but cup labels diverge beyond DD. A UK 34E often corresponds to US 34DDD and EU 75F. Labels vary by brand, and EU cup increments can differ, so these are common chart equivalents rather than a fit guarantee.
US bra size to EU size conversions
To convert a US bra size to an EU size, the band becomes roughly your underbust in centimeters (a 34 band is about 75 cm), while cup letters map across with US DD = EU E and US DDD = EU F. Common equivalents:
| UK | US | EU |
|---|---|---|
| 32D | 32D | 70D |
| 34C | 34C | 75C |
| 34D | 34D | 75D |
| 34DD | 34DD | 75E |
| 34E | 34DDD | 75F |
| 34F | 34G | 75G |
| 36C | 36C | 80C |
| 36D | 36D | 80D |
| 38C | 38C | 85C |
Frequently asked questions
How do I convert a US bra size to an EU size?
As a starting point, a US 34 band is roughly an EU 75 band, and cup letters map with US DD to EU E and US DDD to EU F, so a US 34DDD is commonly an EU 75F. Always check the brand’s own chart, because EU cup increments can differ.
Are UK and US bra sizes the same?
Band numbers are usually the same, but cup letters diverge beyond DD: a UK E is generally a US DDD, a UK F a US G, and so on. Below DD the labels mostly match.
Why do EU bra sizes look like 75F?
EU bands are labelled with the underbust in centimeters, so a 34-inch ribcage is about 75 cm. The letter that follows works like other cup letters, relative to that band.