Put A Cup In It

Ruler for Measuring Your Cervix [Free Printable]

Before you decided to try a menstrual cup chances are you never gave your cervix, and measuring how high it was, a single thought. Suddenly as a future or current cup user, your cervix location is top of mind. Measuring your cervix is an empowering and important activity because it means that you know more about your body and you can more accurately find a menstrual cup that will work for you. Selecting a menstrual cup that fits completely inside of your vaginal canal without being too long (with or without stem) is crucial for you comfort. If a cup is too long to fit beneath your cervix without sticking out it will never work for you.

I’m excited to share a new resource to help our community- a free printable cervix ruler. Now you can have a visual guide, not only to the exact number in inches or millimeters to your cervical height, but also a range to define “low,” “average,” or “high” that doesn’t rely on the imprecise knuckle measurement guide. This resource is best paired with the complete video guide to how to find and measure your cervix. We would suggest going with millimeters when you use our ruler and referencing the Metric version of the Menstrual Cup Comparison Chart.

How to use your Printed Ruler for Measuring your Cervix

Step 1: Wash your hands (this is an activity best done in the shower)

Step 2: Insert a finger into the vagina and feel for the cervix while on your period (feels like the tip of your nose)

how to measure your cervix

Step 3: Use a thumb, mark place with a pen, or remember how much of your finger was inside

Step 4: Align printed ruler base to how far down your finger was inside, measure to tip of finger

Helpful Tips to Keep In Mind

Measure on the first and last day of your period and select a cup that will fit even on your lowest cervix day- remember- the cervix moves throughout the cycle and a cup that’s too long on any day will be uncomfortable.

When marking your place make sure you mark to the inside of the labia minora and not outside to ensure the cup you pick fits entirely inside your body.

If you’re new to menstrual cups, take your new measurement of “low,” “average,” or “high” and then take our menstrual cup quiz. When you answer the question about your cervix height, you now know which category you fall into. While these are exact measurements that are listed there is some wiggle room in many cases, especially when it comes to a cervix that dips into the cup that would make a cup that is mathmatically “too long” for your measured space actually fit. 

If you’re trying to find a cup that fits and are a more experienced cup user, use our menstrual cup comparison chart and sort by length, then look for cups with measurements that fit at or are shorter than your cervix height. Be aware that you are considering the measurement that fits with or without the stem based on your preference. 

Instructions for printing

Be sure your printer is accurate by comparing our printed ruler to a ruler or tape measure for best results or use the handy “coins for scale” option. This PDF was designed to print at 8.5 x 11, standard printer paper size. 

One more thing…

Since the topic of how to measure your cervix comes up so frequently it’s been my pet project to find a way that everyone at home could accurately measure.  One idea that never saw the light of day beyond a few test runs was a printable tattoo with measurement lines FOR YOUR FINGER. And yes, it was obviously going to be called “Put A Finger In It.” I still believe this was a brilliant product but for practical reasons, cost reasons, and the risk of bits of tattoo coming off inside of vaginas, that idea was shelved. A printable paper ruler was the next best idea. I do hope this will be of help to everyone and empower you to learn more about your own anatomy. Another helpful resource is The Beautiful Cervix Project, a website dedicated to photos of the cervix.

4 Responses

    1. Yep. Absolutely. But not everyone has a ruler at home or one with precise small measurements that is easy to read. And this one is designed to measure in the same direction as a vertical finger so it’s a bit easier. Other than the paper it’s free and does make it easier to get an accurate measurement compared to a stiff metal measuring tape which is mostly what people have at home. But if you don’t need it you don’t need it.

  1. A version scaled for A4 size paper would be helpful for those outside North America, where A4 is more commonly used.

  2. Hey i have a question
    I took the quiz and filled my cervix height as 45-55 mm and the cups I was adviced have total length around 70 mm Or higher
    ( I understand whole cup with stem is supposed to be inside you)
    Whereas in one of your YouTube video, I learned that any cup having a length lower than the height of your cervix will work.. Which makes sense according to the placement in the body. ( which means right length should be around 50mm as my cervix height is a litter higher than this)
    So I’m confused now..

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