Bra size guide

Find the right band size

To find your band size, put on a non-padded bra that fits you well. Find a measuring tape, and stand in front of a mirror. Wrap the tape around your body just underneath your bust. The measuring tape should be horizontal to the floor, and quite snug.

The measurement in inches is your band size. If it’s an odd number, round down to the nearest even number.

To find your bust size, measure around the fullest part of your breasts. Take this measurement and subtract the band measurement, e.g. if you measure 31 underneath your breasts, and 34 around, the result is 34-31 = 3. Use the result to find your cup size here:

Cup size = Bust size – Band size:

0 = AA
<1 = A
1 = B
2 = C
3 = D
4 = DD
5 = DDD/E
6 = F
7 = G
8 = H

Please note that this guide only gives you an estimate to your bra size, as sizes may vary between different bra manufacturers.


Convert to international cup size

Use this table to convert your cup size into international sizes.

USA UK Europe France/Spain Japan Australia
AA A A A A AA
A B B B B A
B C C C C B
C D D D D C
D DD E E E D
DD E F F F DD
DDD/E F G G G E
F G H H H F
G H I I I G
H I J J J H
I J K K K I

Convert to international band size

Use this table to convert your bra band size into international sizes.

Japanese bra sizes are the same as European sizes, but the cup size are often written first, e.g. C75 instead of 75C.

USA UK Europe France/Spain Japan Australia
28 28 60 75 60 6
30 30 65 80 65 8
32 32 70 85 70 10
34 34 75 90 75 12
36 36 80 95 80 14
38 38 85 100 85 16
40 40 90 105 90 18
42 42 95 110 95 20
44 44 100 115 100 22
46 46 105 120 105 24
48 48 110 125 110 26