Menstrual cups are a popular alternative to traditional tampons and pads, offering a comfortable, convenient and eco-friendly solution for managing menstrual flow. However, choosing the right size of menstrual cup can be a challenge, especially for those who are new to using this product. In this blog, we will provide you with some tips on how to select the right menstrual cup size to ensure a comfortable and leak-free experience. While some factors are more important than others, considering all of the below when picking a size is worthwhile.



  1. Consider your flow: The amount of menstrual flow you experience is a crucial factor in determining the right menstrual cup size. If you have a heavy flow, you may need a larger size to ensure adequate capacity. On the other hand, if your flow is lighter, a smaller size may be more appropriate. Essentially, Menstrual flow: A lighter flow — where you’d typically need to change a regular tampon or pad a couple of times a day — usually equates to a smaller menstrual cup. A heavier flow — where you’d need to change a highly absorbent tampon or pad every 2 to 3 hours — is often more suited to larger cup sizes.
  2. Age and childbearing history: Women who are under 30 years old and have not given birth vaginally may prefer a smaller size. Conversely, women over 30 or who have given birth vaginally may benefit from a larger size. And, if you’re not sexually active and are a first time user, you must start out with a smaller cup size. 
  3. Cervix height: The height of your cervix can also impact the size of the menstrual cup you need. If your cervix sits low, a shorter cup may be more comfortable, while a higher cervix may require a longer cup. You can visit a gynaecologist to know more about your cervix height. 

Here’s a quick guide to check it although:

Check your cervix near or during your period, where it will be the lowest in the body.

Stand up and take the position often recommended when inserting a tampon, propping one of your legs up on a chair or the bathroom counter. Stick your finger into your vagina and see how far up you have to reach before you can feel your cervix. Some of the descriptions we've heard to describe the cervix include a "round marble with a dent in the centre", "the tip of your nose", and even "a slimy donut"! If you have a dangly cervix, it may even feel like a tiny penis. It should feel quite different from the rest of your vaginal canal.

  • High - If your finger is in all the way and you can't feel your cervix, you have a high cervix
  • Medium - If your finger inserted up to the second knuckle and you can feel your cervix
  • Low - If you can just touch it within your first knuckle

If you have a higher cervix, a longer cup is more suitable for you. If you use a short menstrual cup, it can ride up during the course of the day, and you may find it difficult to remove since it is deeper in your vaginal canal. 



  1. Pelvic floor strength: Women with strong pelvic floor muscles may be able to use a smaller cup, while those with weaker pelvic floor muscles may benefit from a larger cup to ensure a secure fit.
  2. Overall fitness: Age and pregnancy can relax pelvic floor muscles, but exercise can provide a tightening effect. So if you’re fairly active, you may not need the larger size designed for older adults or those who’ve had a full-term pregnancy or given birth vaginally. Similarly, trying out different kinds of firmness is worthwhile as you may find a stiffer cup is better for active days.
  3. Personal preference: Ultimately, the best way to determine the right menstrual cup size is to consider your personal preferences and comfort level. Some women prefer a smaller cup for ease of insertion and removal, while others may find a larger cup more comfortable for all-day wear.
  4. There are lots of knock-off brands of menstrual cups on Amazon and other sites. We don't recommend going on Amazon to buy menstrual cups unless you know which brands are legitimate. Knock-off cups made of inferior materials also tend to break apart after a few months. Menstrual cups are considered medical devices since they are inserted into your body, and we're sure you don't want to insert some dubious materials into your vagina!

In conclusion, selecting the right menstrual cup size is essential for a comfortable and leak-free experience. Consider your flow, age and childbearing history, cervix height, pelvic floor strength, and personal preference when making your choice. Keep in mind that different brands and manufacturers may have different size recommendations, so it's always a good idea to refer to the manufacturer's guidelines.