Your cervix height is one of the most important factors in finding a comfortable menstrual cup. A cup that's too long can poke or feel uncomfortable. A cup that's too short might be hard to reach. Getting the length right makes all the difference in how your cup feels and works.

What Is Cervix Height?

Your cervix is the lower part of your uterus that extends into your vaginal canal. Cervix height is the distance from your vaginal opening to your cervix. This measurement tells you how much space you have for a menstrual cup.

Every woman's cervix height is different. Some women have a low cervix, some have a high cervix, and many fall somewhere in between. There's no "normal" or "better" height. It's just your body's unique anatomy.

How to Measure Your Cervix Height

The best time to measure is during your period. Your cervix sits lower during menstruation than at other times in your cycle.

Here's how to check:

Wash your hands thoroughly.
Stand in a comfortable position or sit on the toilet.
Insert your middle finger into your vagina, reaching as far as you comfortably can.
Feel for your cervix. It feels like the tip of your nose—slightly firm with a small dimple in the center.
Note where your cervix meets your finger.

Now check which category you fall into:

If you can reach your cervix with your finger at the first knuckle, you have a low cervix.
If you reach your cervix at the second knuckle, you have an average cervix.
If you can barely reach your cervix or can't reach it at all, you have a high cervix.

Understanding the Measurements

Cervix height categories correspond to specific measurements. These help match you with the right cup length.

Low Cervix (0-45 mm)

Women with a low cervix need shorter cups. Standard-length cups may stick out or feel like they're poking you. Look for cups specifically designed for low cervix heights. You may also need to trim the stem completely for comfort. Many low-cervix cups have a rounded base instead of a long stem.

Average Cervix (46-55 mm)

An average cervix height works well with most standard menstrual cups. You have the widest range of options. You might still need to trim the stem a bit, but most average-length cups will fit comfortably. This is the most common cervix height category.

High Cervix (56 mm and above)

Women with a high cervix need longer cups. Short cups may be difficult to reach for removal. Look for cups with longer bodies and longer stems. Don't trim the stem until you've tried the cup. The extra length makes removal much easier.

Cup Body Length vs. Total Length

When shopping for cups, you'll see two measurements. The body length is the cup part that holds fluid. The total length includes the stem. Both matter.

The body length needs to fit inside your vaginal canal without the rim pressing on your cervix. The stem helps you reach and remove the cup. For a low cervix, you want a shorter body and might remove the stem. For a high cervix, you want a longer body and a longer stem.

Your Cervix Changes Position

Your cervix moves during your menstrual cycle. It sits lowest during your period and rises higher at other times. This is why you should always measure during your period when you're shopping for cups.

Some women notice their cervix position changes even during their period. It might be lower on heavy flow days and slightly higher on lighter days. This is normal. A well-fitting cup accommodates these small changes.

What If You're Not Sure?

Can't reach your cervix or having trouble measuring? Start with an average-length cup. About 60% of women have an average cervix height. You can always adjust from there.

Pay attention to how the cup feels when you wear it. If it pokes or sticks out, try a shorter cup. If you have trouble reaching it for removal, try a longer cup with a longer stem. Finding the right fit sometimes takes a bit of trial and adjustment.

Finding Your Perfect Fit

Cervix height is just one piece of the puzzle. Your ideal menstrual cup also depends on your age, flow, activity level, and whether you've given birth. Our Cup-Figurator quiz takes all these factors into account to recommend the best cups for your unique body.

Understanding your cervix height empowers you to choose a cup that fits comfortably. Take a few minutes to measure during your next period. This simple step helps you find a cup you'll barely notice wearing—and that's exactly how it should feel.