How to read menstrual cup size data without turning it into a rule

Cup measurements are useful, but they do not decide everything. This guide explains the MonthlyCup model figures and why personal flow and preferences still matter.

Open MonthlyCup model guide Usage basics

Mini37 mm · 15 ml

Normal43 mm · 22 ml

Plus47 mm · 43 ml

Verified specifications

MonthlyCup model figures

The figures below are from MonthlyCup manufacturer information. Capacity is listed to the holes.

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

Important

Age or childbirth alone are not a sizing rule

MonthlyCup’s guide advises comparing measurements with individual flow and preferences. It specifically avoids making age or childbirth the only sizing rule.

Important

No model is guaranteed to fit everyone

Fit is individual. This page can help you read data, but it cannot promise that one model will be right for every person.

Diameter

Diameter is the width measurement. A larger diameter does not automatically mean a better or worse choice; it is one data point to compare with other specifications and preferences.

Cup length and total length

MonthlyCup lists cup length and total length separately. Total length includes the stem, so it can be longer than the cup body measurement.

Capacity

Capacity to holes is a model specification. It should be read alongside flow and emptying guidance, not as a guaranteed wear duration.

Normal model note

MonthlyCup product information for the Normal model lists a 43 mm diameter, 55 mm length without stem, 65 mm including stem and 22 ml capacity up to the holes. The same source lists medical-grade silicone, manufacture in Sweden, a fabric storage pouch and an instruction manual.

Check the official guide before choosing

Use MonthlyCup’s current guide and product pages for live, product-specific information.

Open MonthlyCup model guide

Which MonthlyCup model has the largest listed capacity?

In the approved MonthlyCup guide data, Plus has the largest listed capacity to the holes at 43 ml.

Is Mini only for a specific age group?

This site does not make age-based sizing rules. MonthlyCup’s guide advises comparing measurements with individual flow and preferences.

What are the Normal model measurements?

MonthlyCup lists Normal as 43 mm diameter, 55 mm cup length without stem, 65 mm total length including stem, and 22 ml capacity to the holes.