Bra AtlasBra sizing, measured and sourced

32DD sister size chart, conversions and measurements

32DD has sisters 30E (US 30DDD) and 34D: the same cup volume on a band 2 in tighter or looser.

Bra Atlas fitting card

32DDUK · same in the US

Measures about 32 in underbust and 37 in bust. Same cups as 30E and 34D.

UK
32DD
US
32DD
EU
70E
FR
85E
AU
10DD
JP
F70

Same cups 30E32DD34D

Every sister of 32DD

  • 28FTighter band by 4 in, 2 cup letters up (US 28G, EU 60G)
  • 30ETighter band by 2 in, 1 cup letter up (US 30DDD, EU 65F)
  • 32DDThis size (US 32DD, EU 70E)
  • 34DLooser band by 2 in, 1 cup letter down (US 34D, EU 75D)
  • 36CLooser band by 4 in, 2 cup letters down (US 36C, EU 80C)

By Rai Ansar · Sizes computed by the Bra Atlas engine · Sources and checked dates · How the sizes are calculated

30E: band 30 in, same cup volume. Shown: a woman with olive skin and long dark waves in a lilac bra.

30E

tighter band

32DD: band 32 in, same cup volume. Shown: a woman with fair skin and short silver hair in a dusty rose bra.

32DD

your size

34D: band 34 in, same cup volume. Shown: a woman with deep brown skin and a rounded afro in a rose bra.

34D

looser band

Same cups, three bands: 30E, 32DD, 34D hold the same cup volume.

Tape measurements that give 32DD

Computed by the Bra Atlas engine with the measured-band method, and checked by running each pair back through it.

Underbust and bust for 32DDThese are examples from our measured-band rule; other calculators can round fractional measurements differently.
Snug underbustFullest bustResult
31 in (79 cm)36.5 in (93 cm)32DD
31.5 in (80 cm)36.75 in (93 cm)32DD
32 in (81 cm)37 in (94 cm)32DD
32.5 in (83 cm)37.25 in (95 cm)32DD

Our +4 comparison gives 36A for 32 in underbust and 37 in bust. With an odd 31 in underbust and a 36 in bust we print 32D/DD; our fixture-backed model of calculator.net's unpadded row gives 32DD. How the +4 and measured-band methods work.

What is particular about 32DD

Where the standard UK and US ladders split

In our standard conversion, UK and US labels match through DD. One cup up they split: the UK calls it 32E, the US calls it 32DDD. Victoria's Secret and ThirdLove also use E for DD, so a US "32E" on those labels is this same 32DD. Check which ladder a brand uses before sizing up.

What the +4 method does to this body

A 32 in underbust and a 37 in bust measure 32DD. Our +4 comparison pads the band to 36 and takes the cup from 37 − 36 = 1 in: a 36A. That is two band sizes and four cup letters away on the label, and two cup volumes smaller, the direction White and Scurr (2012) measured.

Which sister to try

If a 32DD band rides up, the tighter sister is 30E (US 30DDD). If it digs in, 34D. 36C is two steps away. Try the nearer sister first; the size label alone does not tell you the wire shape.

32DD in every system

32DD and its sisters on six labelsEach row has the same sister-size volume index. These are conversion-model labels, not proof a brand makes each size; check the brand chart before ordering.
UKUSEUFRAUJP (approx.)
28F28G60G75G6FH60
30E30DDD65F80F8EG65
32DD32DD70E85E10DDF70
34D34D75D90D12DE75
36C36C80C95C14CD80

Other sizes and tools

Sources

Each source was opened and checked on the date shown, or on 25 September 2026. Where sources disagree, the page says so instead of picking one silently.

  1. White J, Scurr J. Evaluation of professional bra fitting criteria for bra selection and fitting in the UK. Ergonomics 2012;55(6):704-711: 45 women; the traditional method overestimated band and underestimated cup
  2. Wikipedia, "Bra size": UK and US cup ladders, the +4 method, EN 13402 and JIS cup steps
  3. A Bra That Fits calculator (community calculator of r/ABraThatFits): we submitted 18 measurement pairs in 6 systems on 25 September 2026; raw synthetic fixture outputs are linked from the methodology
  4. Victoria's Secret Customer Care, "Size & Fit: Bras & Bralettes": US guide states bands 30 to 46 and cups A to O, not all styles in all sizes; bralette rows print DD (E) and DDD (F) (opened 25 September 2026)
  5. ThirdLove, "Bra Size Calculator & Chart": bands 32 to 44, cups AA to H with half cups; 6 synthetic pairs submitted to the calculator; 5 result pairs recorded (opened 25 September 2026)
  6. Victoria's Secret Customer Care, "Size & Fit: International Size Chart (Outside the U.S.)": US sizes sold; bands 30 to 44, cups AA to DDD; US DDD = UK E (opened 25 September 2026)
  7. Wacoal, "International Size Guide": UK AA to GG paired with US AA to J; AUS/NZ keeps FF and GG; band and cup rows are separate, not a stock list (opened 13 October 2026)
  8. Marks & Spencer US, "Bras size guide": UK, AU/NZ, US/CA, EU and FR conversion table (opened 25 September 2026)