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46K Bra Size — UK, EU & French Conversion

A US 46K bra in UK, European and French sizing, with its sister sizes. Not sure 46K is right? Measure with the bra calculator first.

Reviewed by the 247Sizing teamLast updated: 27 August 2026
US 46K = UK 46H
EU 105K · French 120K

A US 46K bra converts to UK 46H, EU 105K and French 120K. The band number maps on a fixed scale, while cup letters shift between systems above D.

RegionSize
US46K
UK46H
EU (Europe)105K
FR / ES (France, Spain)120K

Sister sizes for 46K

Same cup volume, different band — try these if the band feels tight or loose but the cup is right:

48JSister 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.

44K · 48K · 46J

All bra sizes → · Bra calculator → · Converter →

What is a US 46K bra in UK and EU sizing?

A US 46K is a UK 46H, EU 105K and French 120K.

What are the sister sizes of 46K?

Same cup volume, different band: 48J.

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