Today, calculators make many things easier. No more hours of torture to check that the calculation is correct. Nowadays, we enter everything we need for the calculation into the calculator, giving us the correct answer. If you are going to use a breast pump, make it easy for yourself and easily determine the diameter of your perfect flange, all this with our calculator.

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Breast pump flange purpose

If you are a mom, and you want a break or get back to work, you need a breast pump flange. The most important thing is that you can rely on the “shield” and not think about whether this pump will do you more harm than good. The breast pump flange is a funnel-shaped plastic that is placed on the nipple during pumping. Milking pumps are perfect for moms who often require help while breastfeeding. However, it is very important to know information about using the pumps correctly, because improper use can create a problem. That problem can easily be avoided if we read the instructions. Using a flange of the correct size can avoid several complications, such as discomfort, pain, scratches, and many others while pumping milk.

A breast pump

How to measure your nipple size?

Before using breast pumping, measuring the nipples to fit perfectly is necessary. It is important to measure their width in the part where the nipple becomes an areola, not its length.

This can best be measured with a meter or ordinary ruler.

Finding and using the right diameter of the flange is key to a successful and comfortable pumping experience. If you have questions about the measure of the flange, keep reading. Spending a few minutes determining the size of the flange will greatly help you meet and exceed your breastfeeding and pumping goals, and it will be your shield from painful situations.

How to use a flange size calculator?

See the following table to determine the size:

Table for determine size of breast pump flange
Table for determine size of breast pump flange

To clarify:

If the width of your nipple is less than 17 mm, then take size 21 mm. If the width range from 17-20 mm, then it is recommended to use the 24mm flange, for nipples that are 26mm, use the size of 30mm, and so on.

These are basic recommendations. Of course, do not forget to compare your left and right breast, because as well as any part that is even on the human body, your nipples can be different.

Brest pump flange size

The breast pump flange is a part that connects your breast with the pump; when the nipple fit in the pump, the milk will travel through the pipe to the bottle. If there is no real measure of the breast pump flange, the problem may occur. For example, you may not get the largest amount of breast milk, which can block milk channels. Important information is that bad adhesion can also cause damage to nipples, including rubbing marks and cutting cuts. For this reason, it is very important to know how to benefit the right shield and measure of your nipples.

When you try the pump, you can know that the flange is correctly adapted if:

  • Your nipple is focused on the flange and moves freely in the breast pump tunnel.
  • Your areola should have little or no tissue inside the breast pump tunnel.
  • You should not feel the breast areas that still have milk. This indicates uneven milk removal.
  • You should not experience pain in the nipple.
  • You shouldn’t see a white circle at the bottom of the nipple, nor should a nipple fade.


How to measure flange size?

Flanges can be found in a variety of sizes. However, the pumps come with a flange size of about 24 mm in most cases. Either way, you may need a smaller or larger size. Sometimes, it takes as many as two flanges of different sizes for each side to get the job done right. The flange funnel creates a vacuum around the areola, and the nipple should move freely inside the tube.

How to measure nipple for flange size?

Measuring the nipple is very easy. Take a measuring tape or ruler and measure the width of your nipple in millimetres. When measuring, do not include the areola, which is around the nipple. Instead, select the flange size based on the measurement.

What size flange do I need?

After measuring your nipple, add 4 mm to your calculation so that if your nipple is 20 mm in diameter, the flange size is 24 mm. You can read more about this in the upper part of the text.
There is a solution if you do not have a ruler or any meter. Take a coin; if your nipple is a quarter size, it is a 28 mm flange. Is a nipple bigger than a coin? Then a flange size is 21mm! If you think you have a nipple of “normal” size, your flange size is a standard 24 mm flange set.