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Bra Size Conversion Chart

Bra Size Chart & International Conversion Chart

The below chart will help you find the international conversion for your bra cup and band size. Both charts lets you convert between US size and UK, Europe, France, Spain, Japan & Australian bra cup and band sizes.

View Chart

Cup Size Converter
US, UK, Europe, France / Spain, Japan & Australia

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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

Measurement Instructions

Tools needed
Measurement tape & a mirror.

Band Measurement Instructions
Stand in front of a mirror and wrap the measurement tape around your body, right underneath your breasts. Make sure the measurement tape is horizontal and wraps tightly around your body. The measurement you identify is your band size in inches. If you find yourself being between sizes, for instance 41, your correct size could be both 40 and 42.

Cup Size Measurement Instructions
Stand in front of a mirror and measure around the fullest part of your breast. In order to get the cup size, you would need to subtract the bust measurements from the band measurements.

Here's an example: 
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

How to Measure Your Bra Size (Video Instruction)

Band Size Converter
US, UK, Europe, France / Spain, Japan & Australia

Scroll Horizontally -->

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

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Key Takeaways

Decoding Ring Sizes: Understanding the Numbers

Various types of rings displayed on a chart

Ring sizes are represented numerically, corresponding to the inner circumference in millimeters. Half sizes are also available for a more precise fit. The average ring size for men is around 9-10, while for women, it is around 6-7. Getting the right ring size is important for comfort and to prevent the ring from slipping off or getting stuck on the finger. To ensure a proper fit, it’s helpful to consult a men’s ring size chart.

It is recommended to measure one’s ring size at the end of the day when the fingers are warm, as finger size may vary depending on the time of day and the weather. Furthermore, the fingers on the dominant hand are generally larger. For optimal comfort, the ring should fit snugly on the finger, yet be able to slide over the knuckle with minimal effort. Some tips for measuring your ring size accurately include:

  1. Measure your finger at the end of the day when it is warm and slightly swollen.
  2. Use a flexible measuring tape or a piece of string to measure the circumference of your finger.
  3. Compare the measurement to a ring size chart to determine your ring size.
  4. Consider getting a free ring sizer from a jewelry store or online retailer to ensure accuracy.

By following these ring sizing tips, you can measure ring size accurately and find a ring that fits perfectly.

Navigating International Ring Size Systems

Different countries have their own ring sizing systems, which can create confusion when purchasing rings from international sellers or comparing sizes between different countries. The numerical scale for ring sizes in the United States ranges from 1 to 13, with a half size and quarter sizes available. Ring sizes in the United Kingdom, Australia, New Zealand, South Africa and Ireland are designated by letters for both full and half sizes. This system is used to easily identify the correct size of a ring for a recipient. Being familiar with the measurements used in your region or referring to a ring size conversion chart can help you find the equivalent size.

A printable ring size chart can be a helpful tool to ensure that you find a ring that fits comfortably. A printable ring sizer can be found online and printed at home, allowing you to measure your finger and find the appropriate ring size. However, it is important to ensure that ring size is noted in either cm or inches and is double checked for the corresponding country.