Bra Size Calculator
This calculator estimates bra size based on bust size and band size (frame size). To ensure accuracy, measure to the nearest ¼ inch or ½ cm. This calculator provides results for the United States, the United Kingdom, European Union, France, Belgium, Spain, Australia, and New Zealand.
Measurement reference guide
Bra Size Converter
Size Charts and Information
| Band Size | US/UK | EU | FR |
|---|---|---|---|
| XXS | 28 | 60 | 75 |
| XS | 30 | 65 | 80 |
| S | 32 | 70 | 85 |
Cup Size Chart
| Difference | US Cup | UK Cup |
|---|---|---|
| 1" | A | A |
| 2" | B | B |
| 3" | C | C |
Incorrect bra fit
Surveys and studies often cite that anywhere between 70-85% of women wear incorrectly fitted bras. While data collection methods between various sources is not consistent and these percentages may be inflated, incorrectly fitted bras are nonetheless a significant issue, evidenced by the number of studies, articles, and complaints surrounding the issues women face due to a lack of size standardization.
Studies have revealed that the most common mistake made by women when selecting a bra was to choose too large a back band and too small a cup. Part of the issue is the lack of standardization regarding band and cup sizes. These vary largely between countries, and even manufacturers, making it difficult to use these measures as anything more than an approximate fit. A 34B bra from two different companies, for example, may not fit the same person because of this lack of standardization.
Common Signs of Incorrectly Fitted Bras:
- The band digging into the torso or sliding upwards
- Red marks on skin
- Shoulder or neck pain
- The breasts overflowing around the edges of the bra
- The bra's center panel not lying flat against the breast
Bra size components:
Band size (frame size)
The band size is the size of the bra band around the torso. However, band sizes come in different measurements in different countries, in that sizes such as small, medium, and large, equate to different measurements. Refer to the size charts above for measurements, though some variation from the published measurements is possible.
Cup size
The cup size can be calculated using the difference between bust size and band size. Refer to the cup size chart above for specific measurements and international size conversions.