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48A Bra Size — UK, EU & French Conversion

A US 48A bra in UK, European and French sizing, with its sister sizes. Not sure 48A is right? Measure with the bra calculator first.

Reviewed by the 247Sizing teamLast updated: 27 August 2026
US 48A = UK 48A
EU 110A · French 125A

A US 48A bra converts to UK 48A, EU 110A and French 125A. The band number maps on a fixed scale, while cup letters shift between systems above D.

RegionSize
US48A
UK48A
EU (Europe)110A
FR / ES (France, Spain)125A

Sister sizes for 48A

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

46BSister down
⚠️ 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.

46A · 48AA · 48B

All bra sizes → · Bra calculator → · Converter →

What is a US 48A bra in UK and EU sizing?

A US 48A is a UK 48A, EU 110A and French 125A.

What are the sister sizes of 48A?

Same cup volume, different band: 46B.

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