👙 Bra Size
42K Bra Size — UK, EU & French Conversion
A US 42K bra in UK, European and French sizing, with its sister sizes. Not sure 42K is right? Measure with the bra calculator first.
US 42K = UK 42H
EU 95K · French 110K
A US 42K bra converts to UK 42H, EU 95K and French 110K. The band number maps on a fixed scale, while cup letters shift between systems above D.
| Region | Size |
|---|---|
| US | 42K |
| UK | 42H |
| EU (Europe) | 95K |
| FR / ES (France, Spain) | 110K |
Sister sizes for 42K
Same cup volume, different band — try these if the band feels tight or loose but the cup is right:
44JSister 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 42K bra in UK and EU sizing?
A US 42K is a UK 42H, EU 95K and French 110K.
What are the sister sizes of 42K?
Same cup volume, different band: 44J.
ⓘ Affiliate links below. As an Amazon Associate we earn from qualifying purchases at no extra cost to you.
★ Top pick · Recommended on Amazon
Bras (Multipack)
Everyday bras once you know your size.
View on Amazon →Recommended on Amazon
Bra Band Extenders
Adjust the band a touch without changing the cup.
View on Amazon →