Bra AtlasBra sizing, measured and sourced

36C sister size chart, conversions and measurements

36C has sisters 34D and 38B. It converts to EU 80C, France 95C and Australia 14C; our +4 comparison would put the same body in 40AA.

Bra Atlas fitting card

36CUK · same in the US

Measures about 36 in underbust and 39 in bust. Same cups as 34D and 38B.

UK
36C
US
36C
EU
80C
FR
95C
AU
14C
JP
D80

Same cups 34D36C38B

Every sister of 36C

  • 32DDTighter band by 4 in, 2 cup letters up (US 32DD, EU 70E)
  • 34DTighter band by 2 in, 1 cup letter up (US 34D, EU 75D)
  • 36CThis size (US 36C, EU 80C)
  • 38BLooser band by 2 in, 1 cup letter down (US 38B, EU 85B)
  • 40ALooser band by 4 in, 2 cup letters down (US 40A, EU 90A)

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

34D: band 34 in, same cup volume. Shown: a woman with fair skin and short silver hair in a dusty rose bra.

34D

tighter band

36C: band 36 in, same cup volume. Shown: a woman with dark brown skin and long braids in a marigold bra.

36C

your size

38B: band 38 in, same cup volume. Shown: a woman with olive skin and long dark waves in a lilac bra.

38B

looser band

Same cups, three bands: 34D, 36C, 38B hold the same cup volume.

Tape measurements that give 36C

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

Underbust and bust for 36CThese are examples from our measured-band rule; other calculators can round fractional measurements differently.
Snug underbustFullest bustResult
35 in (89 cm)38.5 in (98 cm)36C
35.5 in (90 cm)38.75 in (98 cm)36C
36 in (91 cm)39 in (99 cm)36C
36.5 in (93 cm)39.25 in (100 cm)36C

Our +4 comparison gives 40AA for 36 in underbust and 39 in bust. With an odd 35 in underbust and a 38 in bust we print 36B/C; our fixture-backed model of calculator.net's unpadded row gives 36C. How the +4 and measured-band methods work.

What is particular about 36C

What our +4 comparison returns

A 36 in underbust and a 39 in bust measure 36C. Our +4 comparison pads the band to 40 in, leaving 39 − 40 = −1 in. Using AA for a difference below 1 in gives 40AA: one sister-size volume step smaller than 36C, on a band 4 in longer.

Which sister to try

Band riding up: 34D is one band tighter with the same cups. Band digging in: 38B is one band looser. 32DD and 40A are two steps away on either side.

Reading it elsewhere

36C converts to EU 80C, France 95C, Australia 14C and roughly D80 in Japan, where cups run about a letter ahead of the EU column.

36C in every system

36C 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.)
32DD32DD70E85E10DDF70
34D34D75D90D12DE75
36C36C80C95C14CD80
38B38B85B100B16BC85
40A40A90A105A18AB90

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. Wikipedia, "Bra size": UK and US cup ladders, the +4 method, EN 13402 and JIS cup steps
  2. 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
  3. 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)
  4. 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)
  5. Marks & Spencer US, "Bras size guide": UK, AU/NZ, US/CA, EU and FR conversion table (opened 25 September 2026)