brasize.ai
Calculate
Cup comparison

H vs FF Cup

US H (eight inches) equals UK FF and EU H. UK H is eleven inches. Same letter, three inches apart across systems.

The alphabets

Same inches, three names

Bust − bandUSUKEU
3″CCC
4″DDD
5″DDDDE
6″DDDEF
7″GFG
8″HFFH
9″IGI

Read the system, not the letter. Above D, US repeats D (DD, DDD), the UK doubles alternate letters (DD, E, F, FF, G, GG), the EU just continues (E, F, G). Convert exactly with the size converter.

On a band

H vs FF on the same body

Every cup letter is relative to its band. The guides below show each cup across every band, with the sister sizes that hold the same volume.

Answered

H vs FF: answered

Is a H cup the same as a FF cup?

US H (eight inches) equals UK FF and EU H. UK H is eleven inches. Same letter, three inches apart across systems.

Which is bigger, H or FF?

Depends on the system: US H (eight inches) equals UK FF and EU H. UK H is eleven inches. Same letter, three inches apart across systems.

Why do cup letters differ between countries?

US, UK and EU sizing all measure the same inch difference but continue the alphabet differently above D.

Shop itAt HauteFlair, our sister retailer

Opens HauteFlair’s own hub page; use your measured size there. HauteFlair is owned by the same company as Brasize.ai; that relationship never changes the sizing math, charts, or fit advice on this page. How this site makes money.

Find your cup, in every system

Two measurements, then the letter in US, UK and EU.

Calculate My Bra Size →