Using a soft tape measure, measure around your chest under your bust. Ensure that the tape lies flat and is level all the way around. Use the table below to convert this number to your UK band size.
Measurement below the bust (in inches)
Your UK band size
25-26"
30
27-28"
32
29-30"
34
31-32"
36
33-34"
38
35-36"
40
37-38"
42
Now measure around the fullest part of your breasts to find your bust size. Use the difference between your bust size and your UK band size in the table below to find your UK cup size.
Difference between UK band size and bust size (in inches)
Your UK cup size
no difference
A
1"
B
2"
C
3"
D
4"
DD
5"
E
6"
F
7"
FF
8"
G
For example, if the measurement around your chest below your bust is 29", your UK band size is 34". If the measurement around the fullest part of your breasts is 37", there is a 3" difference between this measurement and your UK band size, so your UK cup size is D. Your bra size is 34D
Fitness and active wear size guide
Sizing in inches
Extra Small
Size 6-8
Small
Size 8-10
Medium
Size 10-12
Large
Size 12-14
Extra large
Size 14-16
Bust
30-32"
32-34"
34-36"
36-38"
38-40"
Waist
22-25"
25-28"
28-31"
31-34"
34-37"
Hips
31-34"
34-37"
37-40"
40-43"
43-46"
Sizing in cm
Extra Small
Size 6-8
Small
Size 8-10
Medium
Size 10-12
Large
Size 12-14
Extra large
Size 14-16
Bust
77-82cm
82-87cm
87-92cm
92-97cm
97-102cm
Waist
56-63cm
63-71cm
71-79cm
79-86cm
86-94cm
Hips
80-87cm
87-94cm
94-102cm
102-109cm
109-117cm
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Using a soft tape measure, measure around your chest under your bust. Ensure that the tape lies flat and is level all the way around. Use the table below to convert this number to your UK band size.
Now measure around the fullest part of your breasts to find your bust size. Use the difference between your bust size and your UK band size in the table below to find your UK cup size.
