BRA CALCULATOR
Wearing a non-padded bra, take two measurements using a fabric tape measure. The first measurement will be around your back and across the fullest part of your bust. Keep the tape close to your body but not pulled too tight and in the same line around your back as your bustline in front. This will be your bust measurement. The second measurement will be around your ribcage directly under the bustline. This will be your band measurement.
When you measure, you should do three things. First is round the number to nearest number. If it 36.5 inch, round it to 37. Second is making it even number. If it 37 inch, make to nearest even number 38. Third is do loose measurement, not tight.
Note: Properly measured bust size will give exact cup size.