👙 Bra Size
34J Bra Size — UK, EU & French Conversion
A US 34J bra in UK, European and French sizing, with its sister sizes. Not sure 34J is right? Measure with the bra calculator first.
US 34J = UK 34GG
EU 75J · French 90J
A US 34J bra converts to UK 34GG, EU 75J and French 90J. The band number maps on a fixed scale, while cup letters shift between systems above D.
| Region | Size |
|---|---|
| US | 34J |
| UK | 34GG |
| EU (Europe) | 75J |
| FR / ES (France, Spain) | 90J |
Sister sizes for 34J
Same cup volume, different band — try these if the band feels tight or loose but the cup is right:
32KSister down
36ISister 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 34J bra in UK and EU sizing?
A US 34J is a UK 34GG, EU 75J and French 90J.
What are the sister sizes of 34J?
Same cup volume, different band: 32K, 36I.
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