How to Measure Nipple for Breast Pump?

Breastfeeding is an intimate experience between a mother and her baby, but it's not always without its challenges. For many mothers, utilizing a breast pump becomes necessary for various reasons such as returning to work, sharing feeding responsibilities, or simply maintaining milk supply. However, the effectiveness and comfort of pumping depend significantly on the correct fit of the breast pump components, particularly the breast shield or flange, which directly interacts with the nipple.

This guide will walk you through how to measure nipple for breast pump to ensure a snug, efficient fit, making your pumping journey smoother. We'll delve into why accurate nipple measurement is crucial, outline simple steps for measurement, and help you select the perfect breast shield, aiming to enhance your pumping experience with ease and confidence.


Why Correct Nipple Measurement is Important for Pumping

Correct nipple measurement plays a crucial role in pumping, ensuring both comfort and efficiency. Just like finding the perfect shoe size, the right fit for a pump flange can prevent discomfort and promote better milk flow. Using a flange that's too small or too large can lead to nipple pain, irritation, and potentially reduce your milk supply. Moreover, a well-fitted flange makes the pumping experience more pleasant, encouraging consistency and ease in your pumping journey. Think of it as customizing your pumping gear for optimal performance. So, taking the time to measure your nipples for the correct flange size isn't just about comfort; it's about making your breastfeeding journey smoother and more effective.

Steps to Measure the Nipple

Understanding why correct nipple measurement is essential for effective pumping sets the stage for learning how to measure nipple size for a breast pump, a crucial step to ensure a comfortable and efficient pumping experience. 

Follow these steps to accurately measure your nipple for a breast pump:

First Method: Using a Nipple Ruler or Normal Ruler to Measure

  • Stimulate Your Nipple: Gently stimulate your nipple to encourage it to become erect or perk up.
  • Hold the Ruler: Hold a nipple ruler or a normal ruler perpendicular to your breast. Align the 0 scale of the ruler with the base of your nipple, ensuring that the ruler's edge meets your areola at the same horizontal line.
  • Take Measurements: Determine the distance in millimeters between the base and the top of your nipple. This measurement indicates the size of your nipple.

Second Method: Using a Nipple Ruler with Holes to Measure

  • Stimulate Your Nipple: Stimulate your nipple to make it erect or perk up for accurate measurement.
  • Place Nipple into Holes: Insert your nipple into each hole of the nipple ruler, one by one, to find the hole that comfortably accommodates your nipple. Ensure your nipple protrudes fully through the hole, and the ruler touches your areola simultaneously.
  • Measure Hole Size: Once you've identified the hole that fits comfortably, note the size indicated on the ruler. This measurement represents the size of your nipple.

Nipple Measurement

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These two methods provide simple and effective ways to measure the size of your nipples, allowing you to determine the appropriate breast shield size for optimal comfort and efficiency during pumping sessions.

How to Choose the Right Breast Shield of the Pump

Finding the perfect fit for your breast pump can make a world of difference in your nursing journey; let's explore how to choose the right breast shield for your pump.

  • Consider the Fit During Pumping: The correct breast shield size will allow your nipple to move freely in the tunnel during pumping. It should not rub the sides, and minimal or no areola should be pulled into the tunnel.
  • Watch for Red Flags: Signs of an ill-fitting breast shield include discomfort while pumping, redness, or soreness of the nipple, and decreased milk output. These are indicators that you may need to switch sizes.
  • Know That Size May Change: It's not uncommon for your breast shield size to change over time due to natural variations in nipple size and elasticity. Be open to re-measuring and adjusting your shield size as needed.
  • Consult with a Lactation Consultant: If you're unsure about your sizing or if pumping continues to be uncomfortable, consider seeking advice from a lactation consultant. They can offer personalized guidance and ensure you're using the right size.
  • Experiment if Necessary: Sometimes, the recommended size based on measurements might not feel the best. Don’t hesitate to try one size up or down to find your perfect fit.

We recommend the eufy wearable breast pump S1 Pro, S1 and E10, where comfort meets innovation to redefine your breastfeeding experience. With HeatFlow™ technology, enjoy revolutionary warmth akin to your baby's embrace, minimizing clogged ducts and enhancing milk flow and output. But the significance doesn't stop there. We understand the pivotal role of selecting the right breast shield for optimal performance. That's why eufy offers customizable breast shields, ensuring a perfect fit for every user. By prioritizing comfort and efficiency, eufy empowers mothers to personalize their pumping journey, resulting in a seamless and rewarding experience.

eufy Wearable Breast Pump: Pump Warm for a Better Flow

  • The world’s first HeatFlow™ technology revolutionizes pumping for unparalleled comfort.
  • Offers up to 300 mmHg hospital-grade suction power for efficient milk extraction.
  • prioritizes pumping comfort with uniquely angled 105° flanges and soft silicone.
  • Simplifies your pumping routine with the eufy Baby app.


Accurate nipple measurement is fundamental for optimizing the comfort and efficiency of breast pumping. In this article, we learned how to measure nipple for breast pump and by selecting the correct breast shield size based on your size, you can ensure a comfortable and effective pumping experience, ultimately supporting your breastfeeding journey. Let's embrace this knowledge to make breast pumping a more enjoyable part of nurturing our little ones. Happy pumping!

Frequently Asked Questions

What Tools Do I Need to Measure My Nipple Size?

You'll need a ruler or measuring tape and a marker to measure your nipple size accurately.

Can I Use a Breast Shield That's Larger Than My Nipple Size?

Using a breast shield that is significantly larger than your nipple size may not provide adequate stimulation and may result in reduced milk output and discomfort. It's best to choose a shield size that closely matches your nipple measurement.

Is It Normal for Nipple Size To Change During Breastfeeding?

Yes, it's normal for nipple size to fluctuate during breastfeeding due to various factors such as milk production, hormonal changes, and baby's feeding patterns. It's essential to monitor your nipple size regularly and adjust your breast pump settings or shield size accordingly.

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