30 F Bra Size Converter

  1. 30 F Bra Size Converter Calculator
  2. 30f Bra Size Converter
  3. 30 F Bra Size Converter Size
  4. What Is 30f Bra Size

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.


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The bust size is the loose circumference measured around the chest over the fullest part of the breasts, while standing straight with arms to the side, and wearing a properly fitted bra.

The band or frame size is the firm circumference, fitted not tightly, measured directly underneath the breasts.


Bra Size Converter

30 F Bra Size Converter Calculator

Use the following to convert the bra sizes betweem different locations.


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 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.

Some signs of incorrectly fitted bras include the band digging into the torso or sliding upwards, red marks, shoulder or neck pain, the breasts overflowing around the edges of the bra, and the bra's center panel not lying flat against the breast, among others.


Bra size

The two major aspects of bra size are the band size and the cup size.

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 table below for some size measurements, though some variation from the published measurements is possible.

30f Bra Size Converter

Band SizeFR/BE/ESEU (Standard EN 13402)US and UKAU, NZ
XXS7560286
XS8065308
S85703210
M90753412
L95803614
XL100853816
XXL105904018
3XL110954220
4XL1151004422
5XL1201054624

Cup size

Converter

The cup size can be calculated using the difference between bust size and band size. Refer to the table below.

Bust/band difference in inchesUS cup sizeUK/AU cup size
<1AAAA
1AA
2BB
3CC
4DD
5E or DDDD
6F or DDDE
7G or DDDDF
8HFF
9IG
10JGG
11KH
12LHH
13MJ
14NJJ

Bust/band difference in cmContinental Europe cup size
10-11AA
12-13A
14-15B
16-17C
18-19D
20-21E
22-23F
24-25G
26-27H
28-29I
30-31J
32-33K

This is a great guide how to find the perfect bra size, and how to convert your bra size to international sizes.


Find the right band size

To find your band size, put on a non-padded bra that fits you well. Find a measuring tape, and stand in front of a mirror. Wrap the tape around your body just underneath your bust. The measuring tape should be horizontal to the floor, and quite snug.
The measurement in inches is your band size. If it’s an odd number, round down to the nearest even number.

To find your bust size, measure around the fullest part of your breasts. Take this measurement and subtract the band measurement, e.g. if you measure 31 underneath your breasts, and 34 around, the result is 34-31 = 3. Use the result to find your cup size here:

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

Please note that this guide only gives you an estimate to your bra size, as sizes may vary between different bra manufacturers.

Convert to international cup size

Use this table to convert your cup size into international sizes.

30 F Bra Size Converter Size

USAUKEuropeFrance/SpainJapanAustralia
AAAAAAAA
ABBBBA
BCCCCB
CDDDDC
DDDEEED
DDEFFFDD
DDD/EFGGGE
FGHHHF
GHIIIG
HIJJJH
IJKKKI
Bra

Convert to international band size

Use this table to convert your bra band size into international sizes.

Japanese bra sizes are the same as European sizes, but the cup size are often written first, e.g. C75 instead of 75C.

What Is 30f Bra Size

USAUKEuropeFrance/SpainJapanAustralia
28286075606
30306580658
323270857010
343475907512
363680958014
3838851008516
4040901059018
4242951109520
444410011510022
464610512010524
484811012511026