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44I Bra Size — UK, EU & French Conversion

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

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

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

RegionSize
US44I
UK44G
EU (Europe)100I
FR / ES (France, Spain)115I

Sister sizes for 44I

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

42JSister down
46HSister 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.

42I · 46I · 44H · 44J

All bra sizes → · Bra calculator → · Converter →

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

A US 44I is a UK 44G, EU 100I and French 115I.

What are the sister sizes of 44I?

Same cup volume, different band: 42J, 46H.

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