Bra band sizes

A bra band size is a tag label, not a body measurement: US and UK labels run from 28 to 60, while EU, FR/BE, AU/NZ and JP labels follow distinct rules.

Band labels by system

A band label is a tag number, not a body measurement. The same band is written with different numbers in each system.

Band labels in six sizing systems
US / UKEUFR/BEAU/NZJP
286075660
306580865
3270851070
3475901275
3680951480
38851001685
40901051890
42951102095
4410011522100
4610512024105
4811012526110
5011513028115
5212013530120
5412514032125
5613014534130
5813515036135
6014015538140

Bra sizes by band

Every size page, grouped by band.

US and UK bands are even numbers from 28 to 60. EU bands rise by 5 at each step, and FR/BE labels are the EU label plus 15. AU/NZ labels are the US and UK label minus 22, while JP labels equal EU labels. For example, band 34 pairs with EU 75, FR/BE 90, AU/NZ 12 and JP 75.

A band label is the number on a tag, not a body measurement. The underbust ranges that lead to a label depend on the method, so the same label can represent different measurements.

The underbust method rounds underbust to the nearest even number of inches, with an exact odd whole number going up. The add-4 method rounds underbust to the nearest whole inch, then adds 4 to an even number or 5 to an odd number. The EU method rounds underbust in centimetres to the nearest 5 cm.

For band 34, the underbust method uses an underbust from 33 in up to but not including 35 in. The add-4 method uses 28.5 in up to but not including 30.5 in. The EU method uses 72.5 cm up to but not including 77.5 cm, giving EU 75.

Published charts disagree about rounding and band assignment. One rounds the bust up, another rounds the band to the nearest even number, and a third uses half-inch ranges. For underbust of 28 in, one published chart gives band 28 under the underbust method, band 32 under the add-4 method and EU 70 under the EU method. The band label chart pairs EU 70 with band 32. Another published tool maps underbust from 28 to 28.5 in to band 30. Measure again or try on to compare.