How To Measure Your Cervix Video And Tips - Period Nirvana

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Knowing your cervix height is an important step when finding the best menstrual cup for you. Your cervix is the top of your vaginal canal and where menstrual fluid (and babies) leave the uterus. Here, we’ll break down how to measure your cervix, so that you can find the best fit for your reusable period product of choice.

Since your cervix is at the top of your vaginal canal it is the ceiling that prevents your cup from going any higher. A lower cervix can be thought of just like a lower ceiling and would be best for shorter cups. If you have a cathedral ceiling you will want to make sure your cup and stem are long enough to easily reach; there is no such thing as a ladder for your fingers.

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A post shared by Kim Rosas (@periodnirvana) on Sep 6, 2020 at 5:10pm PDT

How to measure your cervix height

  1. Measure while on your period (the cervix moves throughout your cycle)
  2. Insert a finger and feel for the cervix (feels like the tip of your nose)
  3. Measure the length that fit inside using a ruler for the most accurate results

You will want to check your cervix height during your period, even better on the first and last days of your cycle. If it makes you more comfortable you can do this in the shower. Your cervix will feel like the tip of your nose and you may be able to detect a small slit or dimple.

line drawing of a uterus and cervix

A low cervix = 44mm (1.7″) or lower from your vaginal opening to the tip of the cervix.

drawing of a uterus and cervix

An Average Cervix = 45mm (1.8″) – 55 mm (2.25″) from your vaginal opening to the tip of the cervix.

line drawing of a uterus and cervix

A High Cervix = 55mm (2.25″) or higher from your vaginal opening to the tip of the cervix. If you can’t reach your cervix you can safely assume it’s high, but for accuracy, you may want to measure your entire finger.

Find The Right Cup or Disc For Your Cervix Height

Once you know your cervix height and if you have a low, average, or high cervix, it will make choosing the best menstrual cup even easier. The Period Nirvana Quiz will ask for your cervix height. All product listings for menstrual cups will give you the length of your cup. Most cups include a stem, you will want to consider if the measurements include the stem. All of the cup and stem need to fit inside the vagina. Stems on menstrual cups can be trimmed to be shorter or they can be completely trimmed off. Most menstrual cup users trim their stems off completely over time, but you should only trim your stem off when you’re comfortable finding and removing your cup.

For additional resources, I highly recommend visiting The Beautiful Cervix Project.

Next Post »How to Use a Menstrual Cup: How to Insert and Remove Menstrual Cups

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About the Author

Kim Rosas

Kim Rosas is a leading menstrual cup expert and founder of Period Nirvana. Educator and advocate in the reusable menstrual products space, Kim has been creating content and teaching workshops to help people make the switch for over 13 years. In 2025 she opened Period Nirvana AVL, a new kind of cycle care destination in Asheville, NC.

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