This tool can help you to determine your bra size in different countries.
It only requires two measurements, the bust girth and underbust girth.
This tool also calculates the breast volume and weight (rough estimate).
To measure the bust girth and underbust girth you need a soft tape-measure.
You can take the measurements in inches (in) or centimeters (cm).
The tape measure should be horizontally all the way along.
The measurements can be entered as fractions (eg: 32.6 in or 82.8 cm).
Do not add additional inches or centimeters, our calculator will do that for you.
Bra sizes usually consist of a number, indicating a band size around the woman's torso, and one or more letters
indicating the breast cup size, for example 34B.
The cup size letters are often AA, A, B, C, etc., where AA is the smallest cup size.
- Bust girth
Measure around the fullest part of your breasts and do not squish them.
- Underbust girth
Measure around your chest under your bust, at the level where the lowest part of your bra should sit.
While care has been taken to render the information accurately, there is no warranty that the information shown here
matches your situation exactly. The converted bra sizes found on this website should be considered as just a guideline.
Within a country most brands follow a basic standard measurement system.
But some may deviate from these standards.
There is no organization enforcing these standards.
You should always wear the bra and make sure it really fits.
Input international bra size calculator:
Output international bra size calculator: