So we all know there is no standard to cup sizing. So when someone comes in and wants a breast implant to get to a 34C cup, it is hard to pick an implant. A 34 C in the US? England? Which bra brand and style?
I found this chart which tries to take a shot at what is the volume of a cup.
This is particularly interesting now for me, as I have the Vectra 3D imaging system which I use for all of my breast patients. It will make it better to truly advise “what size will I be after surgery?” and “What size are my breasts now?”
| Underwire size | Bra size (US system) | Bra size (UK system) | Cup diameter[92] | Volume of one cup | Weight of both breasts |
|---|---|---|---|---|---|
| 30 | 32A 30B 28C | 32A 30B 28C | 9.7 cm (3 in 5/6) | 240 cc (0.51 US pt) | 0.43 kg (0.95 lb) |
| 32 | 34A 32B 30C 28D | 34A 32B 30C 28D | 10.6 cm (4 in 1/6) | 310 cc (0.66 US pt) | 0.56 kg (1.2 lb) |
| 34 | 36A 34B 32C 30D 28E | 36A 34B 32C 30D 28DD | 11.4 cm (4 in 1/2) | 390 cc (0.82 US pt) | 0.70 kg (1.5 lb) |
| 36 | 38A 36B 34C 32D 30E 28F | 38A 36B 34C 32D 30DD 28E | 12.3 cm (4 in 5/6) | 480 cc (1.0 US pt) | 0.86 kg (1.9 lb) |
| 38 | 40A 38B 36C 34D 32E 30F 28G | 40A 38B 36C 34D 32DD 30E 28F | 13.1 cm (5 in 1/6) | 590 cc (1.2 US pt) | 1.1 kg (2.4 lb) |
| 40 | 42A 40B 38C 36D 34E 32F 30G 28H | 42A 40B 38C 36D 34DD 32E 30F 28FF | 14.0 cm (5 in 1/2) | 710 cc (1.5 US pt) | 1.3 kg (2.9 lb) |
| 42 | 44A 42B 40C 38D 36E 34F 32G 30H 28I | 44A 42B 40C 38D 36DD 34E 32F 30FF 28G | 14.8 cm (5 in 5/6) | 850 cc (1.8 US pt) | 1.5 kg (3.3 lb) |
| 44 | 44B 42C 40D 38E 36F 34G 32H 30I 28J | 44B 42C 40D 38DD 36E 34F 32FF 30G 28GG | 15.7 cm (6 in 1/6) | 1,000 cc (2.1 US pt) | 1.8 kg (4.0 lb) |
| 46 | 44C 42D 40E 38F 36G 34H 32I 30J 28K | 44C 42D 40DD 38E 36F 34FF 32G 30GG 28H | 16.5 cm (6 in 1/2) | 1,180 cc (2.5 US pt) | 2.1 kg (4.6 lb) |
| 48 | 44D 42E 40F 38G 36H 34I 32J 30K 28L | 44D 42DD 40E 38F 36FF 34G 32GG 30H 28HH | 17.4 cm (6 in 5/6) | 1,370 cc (2.9 US pt) | 2.5 kg (5.5 lb) |
| 50 | 44E 42F 40G 38H 36I 34J 32K 30L 28M | 44DD 42E 40F 38FF 36G 34GG 32H 30HH 28J | 18.2 cm (7 in 1/6) | 1,580 cc (3.3 US pt) | 2.8 kg (6.2 lb) |
| 52 | 44F 42G 40H 38I 36J 34K 32L 30M 28N | 44E 42F 40FF 38G 36GG 34H 32HH 30J 28JJ | 19.0 cm (7 in 1/2) | 1,810 cc (3.8 US pt) | 3.3 kg (7.3 lb) |
| 54 | 44G 42H 40I 38J 36K 34L 32M 30N 28O | 44F 42FF 40G 38GG 36H 34HH 32J 30JJ 28K | 19.9 cm (7 in 5/6) | 2,060 cc (4.4 US pt) | 3.7 kg (8.2 lb) |
| 56 | 44H 42I 40J 38K 36L 34M 32N 30O 28P | 44FF 42G 40GG 38H 36HH 34J 32JJ 30K 28KK | 20.7 cm (8 in 1/6) | 2,340 cc (4.9 US pt) | 4.2 kg (9.3 lb) |
| 58 | 44I 42J 40K 38L 36M 34N 32O 30P | 44G 42GG 40H 38HH 36J 34JJ 32K 30KK | 21.6 cm (8 in 1/2) | 2,640 cc (5.6 US pt) | 4.8 kg (11 lb) |
| 60 | 44J 42K 40L 38M 36N 34O 32P | 44GG 42H 40HH 38J 36JJ 34K 32KK | 22.4 cm (8 in 5/6) | 3,000 cc (6.3 US pt) | 5.3 kg (12 lb) |
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