Choose your first cup with numbers, not guesswork.

Size labels can sound simple, but the useful details are diameter, cup length, total length, capacity to the holes and your own preferences. This checklist keeps the comparison concrete.

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Comparison facts

MonthlyCup model measurements.

The figures below are from MonthlyCup’s published guide. Capacity is listed up to the holes.

ModelDiameterCup lengthTotal lengthCapacity

Mini37 mm45 mm55 mm15 ml

Normal43 mm55 mm65 mm22 ml

Plus47 mm55 mm65 mm43 ml

Checklist

Before you choose, answer these five questions.

✓

Have I compared diameter and length?

A smaller diameter may look less intimidating; length also matters because the cup body and total length are listed separately.

✓

Have I considered capacity?

MonthlyCup lists Mini at 15 ml, Normal at 22 ml and Plus at 43 ml to the holes. Capacity can be relevant when thinking about flow and emptying rhythm.

✓

Am I avoiding one-rule sizing?

MonthlyCup advises that age or childbirth alone are not a size rule. Treat those factors as incomplete, not decisive.

✓

Do I accept that fit is individual?

No model is guaranteed to fit everyone. A cautious first choice is still a personal choice.

✓

Do I know where to ask product questions?

If you are uncertain about a MonthlyCup product or shopping detail, use MonthlyCup’s current support page rather than guessing from outdated information.

How to read the table

Capacity is not the whole story.

Capacity can help you think about your flow, but it should not be the only factor. Diameter, length and personal preference all affect whether a model feels practical for you.

It is also worth separating product selection from health questions. If you experience new bleeding between periods, after sex or after menopause, NHS period information says this should be discussed with a doctor.

Source note: The model dimensions are manufacturer information from MonthlyCup. They should not be read as independent clinical evidence or as a guarantee of fit.

Choosing FAQ

Which MonthlyCup model has the smallest listed diameter?

MonthlyCup Mini is listed with a 37 mm diameter, compared with 43 mm for Normal and 47 mm for Plus.

Which MonthlyCup model has the highest listed capacity?

MonthlyCup Plus is listed at 43 ml capacity to the holes. Mini is listed at 15 ml and Normal at 22 ml.

Is MonthlyCup Normal always the best first cup?

No. This site does not rank a best first cup. MonthlyCup advises comparing measurements, flow and preferences, and no model is guaranteed to fit everyone.

Can childbirth decide my cup size?

Not by itself. MonthlyCup’s guide says age or childbirth alone are not a size rule.