G cup bra size
The letter G stands for a bust-to-band difference of 7 in in US, EU and FR/BE tags, 9 in in UK tags, 8 in in AU/NZ tags, and 6 in in JP tags.
In US sizing a G cup is a difference of 7 in (17.8 cm) between bust and band.
G at 7 in, system by system
A cup letter stands for a difference between bust and band. The same letter sits at a different difference in some systems.
| System | Difference (in) | Difference (cm) | Written as |
|---|---|---|---|
| US | 7 | 17.8 | DDDD/G |
| UK | 9 | 22.9 | G |
| EU | 7 | 17.8 | G |
| FR/BE | 7 | 17.8 | G |
| AU/NZ | 8 | 20.3 | G |
| JP | 6 | 15.2 | G |
| EU method (cm) | Measured in cm | 24 to 26 cm | G |
Where sources disagree about G
- US letters: 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 letters vary by brand, and the JP column follows one label chart.
- AU/NZ letters above DD disagree between sources: the table lists a single letter where another source lists a double letter.
For G, the difference is 7 in (17.8 cm) in US, EU and FR/BE tags, 9 in in UK tags, 8 in in AU/NZ tags, and 6 in in JP tags. US tags print DDDD/G for the same cup.
G follows DDD and F in the US sequence and comes before H; in UK tags, it follows FF and comes before GG. In EU, FR/BE, AU/NZ and JP tags, F comes before G and H follows it.
Under the EU method, G spans a bust-minus-band difference of 24 cm to less than 26 cm. That is the EU method’s centimetre interval for G.
For G, band 32 lists a bust of 38.5 to 39.5 in (97.8 to 100.3 cm), and band 34 lists 40.5 to 41.5 in (102.9 to 105.4 cm). Band 36 lists 42.5 to 43.5 in (108 to 110.5 cm), and band 38 lists 44.5 to 45.5 in (113 to 115.6 cm).
Published charts give G a 7 in difference in US, EU and FR/BE, 9 in in UK, 8 in in AU/NZ, and 6 in in JP. They also give G different preceding letters in US and UK tags: DDD and FF; F precedes G in the other listed systems.
Questions
What does a G cup mean?
A G cup is a difference of 7 in (17.8 cm) between bust and band in US sizing. The letter names the size of that difference.
Which difference is a G cup in each system?
US 7 in, UK 9 in, EU 7 in, FR/BE 7 in, AU/NZ 8 in and JP 6 in.
Do all systems write a G cup the same way?
Not everywhere. In US sizing it is 7 in, and UK (9 in), AU/NZ (8 in) and JP (6 in) differ.