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44DD Bra Size — UK, EU & French Conversion

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

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

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

RegionSize
US44DD
UK44DD
EU (Europe)100E
FR / ES (France, Spain)115E

Sister sizes for 44DD

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

42DDDSister down
46DSister 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.

42DD · 46DD · 44D · 44DDD

All bra sizes → · Bra calculator → · Converter →

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

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

What are the sister sizes of 44DD?

Same cup volume, different band: 42DDD, 46D.

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