The topic is really important and I totally agree with you. Determining bra size is not as simple a task as it may seem at first glance. I myself have used online
bra calculator many times, including brasizecalculator, and I can say that they can be very helpful, but only if you take all the necessary measurements correctly. First, make sure you have a soft centimeter tape. Measurements are best done in your underwear to avoid distortion. The first thing to do is to measure the girth under your breasts. Do this so that the centimeter tape is parallel to the floor and not too tight. This will give you a base size. Then move on to the girth around the widest part of the bust. Here, too, you need to be careful: the chest should be relaxed to get the most accurate data. When you enter the obtained figures into the calculator, it gives the size, which can be different depending on the manufacturer. For example, the same size may sit completely differently in different brands. I had a situation when the calculator recommended one size, but the bra I ordered turned out to be uncomfortable. Therefore, if you have the opportunity, it is always better to try a bra in a store rather than relying solely on an online calculator.