British (UK) Bra Sizes and Measurements

About UK Sizing Convention

British sizes are abbreviated as UK. Some brands use the abbreviation GB (as in Great Britain). The abbreviation is written together with the size, for example "UK 32D" or "32D (UK)".

Use size conversion charts to compare British (UK) size with other conventions.

Bra sizes following the UK sizing convention are based on measurements in inches. Numbers refers to the band size and letters refer to the cup size.

Bands are measured tightly under bust, cups are measured loosely over the fullest part of the bust. If you are between two band sizes, choose the smaller. If you are between two cup sizes, choose the bigger.

Learn why most women choose too big band size and too small cups.

British (UK) bands are divided in steps of 2 inches, for example 28, 30, 32 and so on. The band size "label" refers to the above bust measurement but the most common measuring method is under bust plus four (+4). For example, under bust measurement 29 inches would mean that you add 4 inches which gives you 33. This number is now rounded down to the nearest multiple of 2, meaning 33 is rounded down to 32. 32 is the band size. These examples are shown to explain how the UK sizes work. The size tables below show the actual measurements, you will not have to round and recalculate as shown above.

Cup sizes are divided in steps of 1 inch. Normally, the cup start with AA or A, depending on producer. AA refer to a difference between the over bust (where the bust is at its fullest) and the rounded down under bust measurement. AA refer to difference of 3-4 inches. The cup sizes continue in steps of 1 inch with A (4-5 inches), B (5-6 inches), and so on. Example: Measuring over bust 43 inches and under bust 35 inches, you must first round down under bust (to the nearest multiple of 2) to 34. Use 34 (not 35) to calculate the difference: 43 - 34 = 9 resulting in a E-cup. Note that when you are between two cup sizes, always choose the larger. The cups should support and lift your bust, but not squeeze.

UK bra cup naming is not straight alphabetical as most other conventions and uses instead double letters for some of the sizes. British naming convention varies between producers, but a common cup naming series is: AA, A, B, C, D, DD, E, F, FF, G, GG, H, HH, J, JJ, K, KK, and so on. Note that "I" is omitted and that all consonants after C are used twice, the second time doubled. This naming method is why UK and US cups differ starting with UK DD. For example, a British DD and FF-cup corresponds to American E and H-cup.

This page contains tables showing a list of UK sizes in both inches (in) and centimeters (cm). Band and cup measurements are shown individually.

UK Bra Size Tables

Download Charts and Tables as Images

You are welcome to download and share our bra size charts and tables as long as you keep the watermark and name. Click on an item below for full version.

• AA to M-cup:
  
• AA-cups:
  
• A-cups:
  
• B-cups:
  
• C-cups:
  
• D-cups:
  
• DD-cups:
  
• E-cups:
  
• F-cups:
  
• FF-cups:
  
• G-cups:
  
• GG-cups:
  
• H-cups:
  
• HH-cups:
  
• J-cups:
  
• JJ-cups:
  
• K-cups:
  
• KK-cups:
  
• L-cups:
  
• LL-cups:
  
• M-cups:
  

Additional Notes

• Measurements in centimeters are rounded to the nearest integer.
• 1 inch (in) = 2.54 centimeters (cm). 1 cm = 0.394 in.
• British (UK) and American (US) bra cups are not the same.