Bra size chart
A bra size chart matches a band label with a cup letter: use the band chart for your band, then find the difference between bust and band in the cup chart, which runs from 0 to 15 inches.
Chart by difference between bust and band
A difference is your bust minus your band number, rounded to a whole inch. Find the row for your difference to read the cup letter in each system.
| Difference (in) | Difference (cm) | US | UK | EU | FR/BE | AU/NZ | JP | Note |
|---|---|---|---|---|---|---|---|---|
| 0 | 0 | AA | AA | AA | AA | AA | Not listed | |
| 1 | 2.5 | A | A | A | A | A | Not listed | |
| 2 | 5.1 | B | B | B | B | B | C | |
| 3 | 7.6 | C | C | C | C | C | D | |
| 4 | 10.2 | D | D | D | D | D | E | |
| 5 | 12.7 | DD/E | DD | E | E | DD | F | |
| 6 | 15.2 | DDD/F | E | F | F | E | G | |
| 7 | 17.8 | DDDD/G | F | G | G | F | H | |
| 8 | 20.3 | H | FF | H | H | G | I | Note 1 |
| 9 | 22.9 | I | G | I | I | H | J | |
| 10 | 25.4 | J | GG | J | J | I | K | Note 2 |
| 11 | 27.9 | K | H | K | K | J | Not listed | |
| 12 | 30.5 | L | HH | L | L | K | Not listed | |
| 13 | 33 | M | J | M | M | L | Not listed | |
| 14 | 35.6 | N | JJ | N | N | M | Not listed | |
| 15 | 38.1 | O | K | O | O | N | Not listed |
Where the sources disagree
- Note 1. Difference of 8 in: sources disagree on the AU/NZ letter. The table lists G; another source lists a double letter.
- Note 2. Difference of 10 in: sources disagree on the AU/NZ letter. The table lists I; another source lists a double letter.
- US letters E, F and G: most charts print DD/E, DDD/F and DDDD/G, and some US brands use other sequences between D and H.
- UK double letters: FF, GG and HH appear in many UK charts, and one UK retailer leaves out some of them.
- JP cup letters follow one label chart, sit one letter above the US letter from B upward, and vary by brand.
- EU cup letters: letters measured in cm steps and the inch-based EU column of retailer charts match only from E upward.
Band conversion
A band label is a tag number, not a body measurement. The same band is written with different numbers in each system.
| US / UK | EU | FR/BE | AU/NZ | JP |
|---|---|---|---|---|
| 28 | 60 | 75 | 6 | 60 |
| 30 | 65 | 80 | 8 | 65 |
| 32 | 70 | 85 | 10 | 70 |
| 34 | 75 | 90 | 12 | 75 |
| 36 | 80 | 95 | 14 | 80 |
| 38 | 85 | 100 | 16 | 85 |
| 40 | 90 | 105 | 18 | 90 |
| 42 | 95 | 110 | 20 | 95 |
| 44 | 100 | 115 | 22 | 100 |
| 46 | 105 | 120 | 24 | 105 |
| 48 | 110 | 125 | 26 | 110 |
| 50 | 115 | 130 | 28 | 115 |
| 52 | 120 | 135 | 30 | 120 |
| 54 | 125 | 140 | 32 | 125 |
| 56 | 130 | 145 | 34 | 130 |
| 58 | 135 | 150 | 36 | 135 |
| 60 | 140 | 155 | 38 | 140 |
The cup chart has a row for each difference from 0 (less than 1) to 15 inches and columns for US, UK, EU, FR/BE, AU/NZ and JP. Find your difference in the first column, then read across under your system. The band label comes from the separate band chart, which lists US and UK bands from 28 to 60.
The US, UK, EU, FR/BE and AU/NZ columns show the same letters from 0 to 4 inches. They split at 5 inches: US prints DD/E, UK and AU/NZ print DD, and EU and FR/BE print E. JP prints F at that difference, and its column lists letters only from 2 to 10 inches. The JP column has no letter for differences 0, 1, and 11 to 15 inches. JP letters also vary by brand.
The labels can differ further up the cup chart. US tags may pair letters, such as DD/E at 5 inches, DDD/F at 6 inches and DDDD/G at 7 inches. UK tags use double letters between single letters, including DD, FF, GG, HH and JJ. Published charts disagree on AU/NZ at 8 inches: some show G and another shows FF. At 10 inches, some show I and another shows GG.
Published charts also differ in other details. Some US brands use D1 to D5, E, EE and EEE where other charts show DD, DDD and DDDD; one published chart reports this variation. One UK retailer is reported to leave out FF and HH. The EU method defines cup letters in centimetres, while charts that pair EU letters with inches do not line up with that scale. Guides also round differently, including rounding the bust up, rounding the band to the nearest even number, or using half-inch ranges. Measure again or try on to compare the chart with a tag.