Breast Form Size Guide
Try our breast form calculator
| Underbust | 400g | 500g | 600g | 700g | 800g | 900g | 1000g | 1200g | 1400g | 1600g | 1800g | 2000g | 2200g | 2400g |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 28" / 71cm | A | A/B | B | C | D | DD | DD/E | E | F | FF | G | GG | GG/H | H |
| 30" / 76cm | A | A/B | B | C | D | DD | DD/E | E | F | FF | G | GG | GG/H | H |
| 32" / 81cm | A | A/B | B | C | D | DD | DD/E | E | F | FF | G | GG | GG/H | H |
| 34" / 86cm | A | A/B | B | C | C/D | D/DD | DD | DD/E | E/F | F/FF | FF/G | G/GG | GG | GG/H |
| 36" / 91cm | AA/A | A | A/B | B | B/C | C | C/D | D | DD | E | F | F/FF | FF/G | G/GG |
| 38" / 97cm | AA/A | AA/A | A | A | A/B | A/B | B | B/C | C/D | D/DD | DD | E | F | FF/G |
| 40" / 102cm | AA/A | AA/A | AA/A | A | A | A | A/B | B | C | C/D | D/DD | DD | E | F/FF |
| 42" / 107cm | AA/A | AA/A | AA/A | A | A | A/B | A/B | B/C | C | C/D | D/DD | DD | E | F |
| 44" / 112cm | AA | AA/A | A | A | A/B | A/B | B | B/C | C | C/D | D/DD | DD | DD/E | E/F |
| 46" / 117cm | AA | AA/A | A | A | A/B | B | B | B/C | C | C/D | D/DD | DD | DD/E | E |
Starting guide only: This chart assumes a flat or AA starting chest. Find your underbust measurement on the left, then choose the breast form pair weight across the top. If you have existing breast tissue or chest projection, use our Bra & Breast Form Size Calculator for a more personalised estimate.
AA–A B C D–DD E–F FF–G GG+
Breast Form Dimensions
Approximate dimensions for each individual breast form. Weights shown are the combined weight of the pair. Measurements are width × length × depth in centimetres.
| Pair Weight | Width | Length | Depth |
|---|---|---|---|
| 400g | 13.5cm | 12cm | 5cm |
| 500g | 15cm | 13cm | 5.5cm |
| 600g | 15.5cm | 13.5cm | 6cm |
| 700g | 16cm | 14cm | 6.5cm |
| 800g | 16.5cm | 14.5cm | 7cm |
| 900g | 17cm | 15cm | 6.5cm |
| 1000g | 17.5cm | 15.5cm | 7cm |
| 1200g | 18cm | 16cm | 8cm |
| 1400g | 18.5cm | 16cm | 8.5cm |
| 1600g | 19cm | 16.5cm | 9cm |
| 1800g | 19.5cm | 16.5cm | 9.5cm |
| 2000g | 20cm | 17.5cm | 9.5cm |
| 2200g | 20.5cm | 18cm | 9cm |
| 2400g | 20.5cm | 18cm | 10cm |