knowhersize

Reviewed

34H (UK 34FF) bra size

A 34H has a 34-inch band and a H cup, about 8 inches between band and bust. In the UK it is 34FF, in Australia 12FF and in Europe 75H.

US
34H
UK
34FF
AU
12FF
EU
75H
FR
90H

Also fits (sister sizes): 32I firmer band · 36G looser band · all same-volume sizes ↓

34H measurements

Snug underbust
34–35 in · 86–89 cm
Bust, fullest part
about 42 in · 105–108 cm
Cup difference
8 in (H cup)

These are starting points from the band-and-cup method. Brands differ by about a size, so a two-minute measurement beats any chart.

34H sister sizes

Same cup volume, different band. If a 34H band feels too loose, go down a band and up a cup; if it feels tight, go up a band and down a cup.

34H = UK 34FF · AU 12FF · EU 75H · FR 90H. Sister sizes: 32I, 36G. 34H in full →
B
C
D
DD
DDD
G
H
I
28
30
32
34
36
38
40
42
44
28K30J32I34H36G38DDD40DD42D44C

If a 34H doesn't fit

Band rides up at the back
Try 32I
Band digs in, cups fit
Try 36G
Spilling over the cups
Try 34I
Cups gape or wrinkle
Try 34G

Not sure what's wrong? Run through the 4-point fit check.

Sizes next to 34H

34H questions

What is the sister size of 34H?

32I (one band down, one cup up) and 36G (one band up, one cup down). Sister sizes hold the same cup volume on a different band.

What is 34H in UK, Australian and European sizes?

UK 34FF, Australia 12FF, Europe 75H and France 90H. US and UK cup letters match up to DD and then split.

What measurements are a 34H?

A snug underbust of about 34–35 in (86–89 cm) and a bust of about 42 in (105–108 cm). Measure with the tape level and use the calculator for an exact result.

Is 34H a big size?

34H has a very full cup volume for a 34 band. Cup letters only mean something next to the band: a 34H holds the same as 28K or 30J.