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The MeLuna USA Menstrual Cup Size Calculator

Our size calculator offers a convenient way to estimate the correct size for your new MeLuna Cup!

Please note this an estimate only and not a guarantee. All bodies are different.

If in doubt and -especially if you're already wearing a different brand cup- please make use of our live chat option. Knowing how your current cup works for you, can give us a better starting point. 

You can also find recommendations on our page on switching brands.

If you feel you would like to have more aspects such as surgeries considered in your cup selection, please check out our size calculator


Have you given birth vaginally?

no vaginal births or surgical muscle repair after birth= 1 point
one or two vaginal births= 3 points
more than two vaginal births= 5 points
Your total points in the birth category:

How would you describe your pelvic structure?

Petite and Narrow = 0 points
Average = 2 points
Broad or Large= 3 points
Your total points in the body category:

Have you been sexually active?

No, never = 0 points
Yes = 2 points
Yes, but surgical muscle repair or a medical condition requires a narrower cup (significant impact)= 0 points
Yes, but surgical muscle repair or a medical condition requires a narrower cup (moderate impact)= 1 point
Your total points in the experience category:

 What is your level of fitness:

High level of fitness pertaining to core and pelvic muscles(athlete level, 4 hrs/wk for year or longer)
= 0 points
Average level of fitness (walking, hiking, occasional fitness classes, etc)
= 1 points
Your level of fitness is below average (mostly sedentary)
= 2 points
Your total points in the fitness category:

Your total points:

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Our size estimate for you in the standard cups is:

(due to reduced capacity you may wish to consider going one size up in diameter for shorty cups)

1-3 points

Size S

The Size S could be a good choice for you

4 points

Size S

Depending on menstrual flow size S or M could be a good choice for you

5 points

Size M

Depending on menstrual flow size S or M could be a good choice for you

6 points

Size M

Size M could be a good choice for you

7 points

Size M

Depending on menstrual flow size M or L could be a good choice for you

8 points

Size L

Depending on menstrual flow size M or L could be a good choice for you

9 points

Size L

Size L could be a good choice for you  

10 points

Size L

Depending on menstrual flow size L or XL could be a good choice for you

11 points

Size XL

Depending on menstrual flow size L or XL could be a good choice for you

12 points

Size XL

Size XL could be a good choice for you