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44DDD Bra Size — UK, EU & French Conversion

A US 44DDD bra in UK, European and French sizing, with its sister sizes. Not sure 44DDD is right? Measure with the bra calculator first.

Reviewed by the 247Sizing teamLast updated: 27 August 2026
US 44DDD = UK 44E
EU 100F · French 115F

A US 44DDD bra converts to UK 44E, EU 100F and French 115F. The band number maps on a fixed scale, while cup letters shift between systems above D.

RegionSize
US44DDD
UK44E
EU (Europe)100F
FR / ES (France, Spain)115F

Sister sizes for 44DDD

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

42GSister down
46DDSister 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.

42DDD · 46DDD · 44DD · 44G

All bra sizes → · Bra calculator → · Converter →

What is a US 44DDD bra in UK and EU sizing?

A US 44DDD is a UK 44E, EU 100F and French 115F.

What are the sister sizes of 44DDD?

Same cup volume, different band: 42G, 46DD.

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