A STEP-BY-STEP GUIDE TO MEASURING YOUR BRA SIZE 

 

STEP 1: TAKING THE MEASUREMENTS 

Two measurements need to be taken. The ribcage circumference (measurement A) and the bust circumference (measurement B). Both measurements need to be recorded in inches. The measuring tape should sit firmly, but not tightly against the skin. You should be breathing out when taking the measurements.

How to measure your bra size online  

STEP 2: DETERMINING THE BAND SIZE

Measurement A will determine the band size.

28” = size 6                             38" = size 16

30” = size 8                             40" = size 18 

32” = size 10                           42" = size 20

34” = size 12                           44" = size 22

36” = size 14                           46" = size 24

 

STEP 3: DETERMINING THE CUP SIZE

Determine the cup size by doing a simple calculation to measure the difference between the ribcage size and the bust size. Measurement B (in inches) – Measurement A (in inches).

Eg Measurement B = 40", Measurement A = 36” = difference of 4” = D cup

Eg Measurement B = 50”, Measurement A = 42” = difference of 8” = FF or G cup

 

Difference of 1 = A cup             Difference of 7 = F cup

Difference of 2 = B cup             Difference of 8 = FF/G cup

Difference of 3 = C cup             Difference of 9 = G/GG cup

Difference of 4 = D cup             Difference of 10 = GG/H cup

Difference of 5 = DD cup          Difference of 11 = H/HH cup

Difference of 6 = E cup             Difference of 12 = J cup 

 

STEP 4: PUTTING IT ALL TOGETHER

If Measurement A is 32”, then the ribcage size should be a 10. If Measurement B is 36”, then the difference between Measurement A and B is 4 inches, which will mean a cup size D. This example is a 10D.

Another example. If Measurement A is 38”, then the ribcage size should be a 16. If Measurement B is 45”, then the difference between Measurement A and B is 7 inches, which will mean a cup size F. This example is a 16F.

 

STEP 5: TROUBLE SHOOTING 

Is the size you are measuring wildly different to what you have been wearing?

This isn’t uncommon, there could be a few different reasons for this.

  • The tape measurement system isn’t a perfect system (there isn’t one!), but it generally works as a very good guide.
  • It can be difficult to measure yourself. Especially without experience. So it’s not uncommon to make the odd mistake when learning these things. Make sure you are using the inches, not cm’s.
  • 8/10 women wear the wrong size bra. It is very common that women are wearing bras sizes that are extremely different to what they may be fitted in to in a fitting.

If your size is not aligning with your expectations then send us an email with some detail like what measurements you are getting for both measurements A + B, what size you have been wearing, what t-shirt size you would usually wear (eg 8, 12, 20) and some insight into whether you feel you have been wearing the right size bra. We will be able to guide you better with this info.