👙 Bra Size
34B Bra Size — UK, EU & French Conversion
A US 34B bra in UK, European and French sizing, with its sister sizes. Not sure 34B is right? Measure with the bra calculator first.
US 34B = UK 34B
EU 75B · French 90B
A US 34B bra converts to UK 34B, EU 75B and French 90B. The band number maps on a fixed scale, while cup letters shift between systems above D.
| Region | Size |
|---|---|
| US | 34B |
| UK | 34B |
| EU (Europe) | 75B |
| FR / ES (France, Spain) | 90B |
Sister sizes for 34B
Same cup volume, different band — try these if the band feels tight or loose but the cup is right:
32CSister down
36ASister up
⚠️ US cup lettering above D varies by brand (DD vs E, DDD vs F). Match by the EU/UK equivalent when a brand's letters differ.
All bra sizes → · Bra calculator → · Converter →
What is a US 34B bra in UK and EU sizing?
A US 34B is a UK 34B, EU 75B and French 90B.
What are the sister sizes of 34B?
Same cup volume, different band: 32C, 36A.
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