👙 Bra Size
38K Bra Size — UK, EU & French Conversion
A US 38K bra in UK, European and French sizing, with its sister sizes. Not sure 38K is right? Measure with the bra calculator first.
US 38K = UK 38H
EU 85K · French 100K
A US 38K bra converts to UK 38H, EU 85K and French 100K. The band number maps on a fixed scale, while cup letters shift between systems above D.
| Region | Size |
|---|---|
| US | 38K |
| UK | 38H |
| EU (Europe) | 85K |
| FR / ES (France, Spain) | 100K |
Sister sizes for 38K
Same cup volume, different band — try these if the band feels tight or loose but the cup is right:
40JSister 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 38K bra in UK and EU sizing?
A US 38K is a UK 38H, EU 85K and French 100K.
What are the sister sizes of 38K?
Same cup volume, different band: 40J.
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