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The International Size Reference Guide

Bra Size Chart, UK

Determine UK Bra Size - Cup Size and Band Size

How to Determine your Bra Size?

Measure Band Size and Cup Size
To determine your bra size (and to find the perfect fitting bra), it is very important that you measure your body carefully. You need to measure both under bust measurement and over bust measurement. See illustration above, and read our measuring instructions below:

1. Under Bust Measurement: Measure circumference around your body just under your bust/breasts. Make sure the measuring tape is parallel with the ground. Round measurement down to nearest whole number, and determine your band size from the Band Size Chart below.

2. Over Bust Measurement (Bust Size): Wear a non-padded bra (or no bra) while measuring. Stand with your arms at your side (ask a friend for measuring help if possible). Measure all around your body (under arms) at the fullest part of your bust . Make sure the measuring tape is parallel with the ground, and not binding. Under Bust Measurement is used (combined with over bust measurement) to determine cup size. See cup size chart and instructions below.

Bra Band Size Chart, UK:

See measuring instructions above.
Under Bust
Under Bust
Band Size
. .
23" 58-60.5 cm 28
24" 60.5-63 cm 28
25" 63-65.5 cm 30
26" 65.5-68 cm 30
27" 68-71 cm 32
28" 71-73 cm 32
29" 73-76 cm 34
30" 76-78.5 cm 34
31" 78.5-81 cm 36
32" 81-83.5 cm 36
33" 83.5-86 cm 38
34" 86-89 cm 38
35" 89-91.5 cm 40
36" 91.5-94 cm 40
37" 94-96.5 cm 42
38" 96.5-99 cm 42
39" 99-101.5 cm 44
40" 101.5-104 cm 44
41" 104-106.5 cm 46
42" 106.5-109 cm 46
Tip: Because bra bands tend to strech over time, your bra should fit firmly on the loosest hook when new.

Cup Size Chart:

Determine your Cup Size:
Use both Over bust measurement and Determined Band Size (determined above) to find your Cup Size. Calculate the difference between your Bust Measurement and Band Size like this:

Cup Size = Over bust measurement (inches)- Band Size (determined above) 

Subtract your Band size (determined by using band size chart below) from your measured bust size (measurement over bust in inches). Use the number you get to determine cup size from Cup Size Chart below:
Over Bust
- Band Size
Cup Size
< 1" AA
1" A
2" B
3" C
4" D
5" DD
6" E
7" F

Your Best Bra Size Tips & Tricks...

Got any bra size tips or tricks? Or maybe a question on UK bra sizing? Let us hear. Thanks!
Note: All our size charts are guidelines.

Sizes may vary with brands, models and manufacturers. Due to this fact, we can not guarantee that our size charts always will show the right sizes.

You are welcome to link to our size charts from your blog/website/webshop. Store owners may also refer to our size charts in their store(s). Thanks a bunch!

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MG // Martin Granum

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