Diameter is not a personality quiz
Diameter is one physical measurement. It may be part of your comparison, but it should not be turned into a universal rule about age, childbirth or body type.
Model comparison
The size chart, translated into decisions.
A menstrual cup table should slow the choice down in a good way. The numbers below come from MonthlyCup’s published guide: compare them, then read the notes before treating any model as a match.
Published model data
Mini, Normal and Plus in one view.
Capacity is stated to the holes. Length is separated into cup length and total length because the stem changes how the full product length is read.
| MonthlyCup model | Diameter | Cup length | Total length | Capacity to holes |
|---|---|---|---|---|
| Mini | 37 mm | 45 mm | 55 mm | 15 ml |
| Normal | 43 mm | 55 mm | 65 mm | 22 ml |
| Plus | 47 mm | 55 mm | 65 mm | 43 ml |
Source note: These measurements are attributed to MonthlyCup’s published model comparison and usage guide. They are manufacturer information, not independent clinical evidence.
Length has two readings
MonthlyCup lists cup length and total length. Total length includes the stem, so read both figures before comparing models.
Capacity is stated to holes
The capacity figures here are given to the holes. Use that wording when comparing the numbers, because capacity claims can vary by how they are measured.
Next step
Do not let the chart choose for you.
MonthlyCup’s guidance says to compare measurements alongside individual flow and preferences. It also states that no model is guaranteed to fit everyone. If you are new to cups, the NHS notes that cups and tampons can take practice.
- Compare diameter, cup length and total length first.
- Look at capacity in the exact terms used by the manufacturer.
- Read the current instructions supplied with the product.
- For shopping or product questions, use the current support page.
Want the full manufacturer guide?
Open the current MonthlyCup guide for model comparison and usage instructions. Prices, availability and product pages may change, so live pages are the right place for current shop information.
Size chart FAQ
What is the MonthlyCup Mini diameter?
The published MonthlyCup guide lists Mini with a 37 mm diameter.
What is the MonthlyCup Normal capacity?
MonthlyCup lists Normal with a capacity of 22 ml up to the holes.
Which MonthlyCup model has the highest listed capacity?
In the published guide data, Plus has the highest listed capacity to the holes at 43 ml.
Does the chart prove which size will fit me?
No. The chart gives product dimensions. MonthlyCup states that no model is guaranteed to fit everyone.