Choosing between a menstrual cup and a menstrual disc comes down to fit, comfort, flow, removal preferences and how you want to use your period product.
Both products collect menstrual flow rather than absorbing it, but they sit differently inside the body. A cup sits within the vaginal canal and opens to form a seal against the vaginal walls. A disc sits higher, with its reservoir beneath the cervix, its back rim in the vaginal fornix and its front rim tucked behind the pubic bone.
Neither option is automatically better or easier for everyone. Comparing the products' actual dimensions, firmness, capacity and removal features is more useful than relying on a generic size label or assuming one category will suit every body.
Menstrual cup or disc: the quick answer
Consider a menstrual cup if you prefer a cup-shaped product that sits within the vaginal canal, want to compare a wide range of lengths and firmness levels, and are comfortable releasing a seal during removal.
Consider a menstrual disc if you prefer a higher, flatter fit, do not want a product that relies on a cup-style seal, or want the option of a product designed to be worn during penetrative vaginal sex.
Neither product is universally easier. A cup requires you to learn how to fold it, allow it to open and release its seal. A disc requires you to position the back rim behind the cervix, tuck the front rim behind the pubic bone and keep the flexible reservoir relatively level during removal.
If you are unsure where to start, use our Find Your Best Fit Quiz or visit the Menstrual Products Comparison Hub.
What is the difference between a menstrual cup and disc?
The main difference is where and how each product sits inside the body.
- A menstrual cup is folded and inserted into the vagina. It opens within the vaginal canal and forms a seal against the vaginal walls. The cervix usually sits above the cup's opening but may sit partly inside it, depending on your anatomy and the cup's fit.
- A menstrual disc is compressed into a narrow shape and inserted further back. Its reservoir sits beneath the cervix, its back rim rests in the vaginal fornix and its front rim tucks behind the pubic bone.
Neither product absorbs menstrual blood. Both collect it so it can be emptied into a toilet, sink or shower, depending on the product and where you are changing it.
Menstrual cup vs disc comparison
| Feature | Menstrual cup | Menstrual disc |
|---|---|---|
| Design | Cup-shaped reservoir, usually with a stem or another grip feature | Shallow flexible reservoir surrounded by a rim |
| Position | Within the vaginal canal | Higher in the vagina, beneath the cervix |
| How it stays in place | Opens and forms a seal against the vaginal walls | Back rim rests in the vaginal fornix and front rim tucks behind the pubic bone |
| Important fit measurements | Body length, total length, diameter, shape and firmness | Diameter or dimensions, rim firmness, shape and removal design |
| Capacity | Varies between models | Varies between models; stated capacity may differ from usable capacity once positioned |
| Reusable or disposable | Reusable | Reusable and single-use options are available |
| Removal | Release the seal, then remove the cup by its base | Lower the front rim using a finger or the product's removal feature, then slide the disc out |
| Penetrative vaginal sex | Generally not designed to be worn | Some discs are specifically designed to be worn; check the product instructions |
| Wear time | Follow the supplied instructions; Australian requirements specify a stated maximum of no more than 12 hours | Follow the instructions for the individual disc |
| IUD evidence | Research suggests a possible association with expulsion, but results vary and may depend on the IUD design | Direct evidence is very limited; do not assume cup findings automatically apply to discs |
| Cleaning | Wash between uses and follow the manufacturer's care instructions | Wash reusable discs as directed; discard single-use discs after use |
How menstrual cups work
A menstrual cup is a flexible container that collects menstrual flow within the vaginal canal.
You fold the cup before insertion. Once it is comfortably inside, it opens and forms a seal against the vaginal walls. To remove it, you reach the base of the cup, release the seal and gently bring the cup down before emptying and cleaning it.
Cups are available in different lengths, diameters, shapes, firmness levels and capacities. These differences can have a greater effect on comfort than the brand name or a generic “small” or “large” label.
A cup that is too long may feel crowded or sit too close to the vaginal opening if your cervix is relatively low. A cup that is very short may be more difficult to reach if your cervix is high. Firmness and diameter can also affect opening, pressure and comfort.
Compare these details in our Menstrual Cups Comparison Chart.
How menstrual discs work
A menstrual disc has a flexible rim and a shallow reservoir. It is compressed into a narrow shape for insertion and guided back towards the tailbone.
The back rim is positioned in the vaginal fornix behind the cervix. The front rim is then tucked behind the pubic bone. When the disc is positioned correctly, its reservoir sits beneath the cervix and collects menstrual flow.
A disc does not rely on the same vaginal-wall seal as a cup. However, it still needs to be the right size and shape for your anatomy. A disc that is too large may feel uncomfortable or repeatedly come untucked, while one that is too small may not remain securely positioned.
Disc designs also have different removal features, including finger notches, tabs, loops, rings and tails. Compare their dimensions, firmness and removal designs in our Menstrual Disc Comparison Chart.
Fit, cervix position and anatomy
Your anatomy is one of the most useful starting points when choosing either product.
The cervix can sit at different heights and angles and may move during your menstrual cycle. A relatively low cervix may leave less room for a longer cup, while a high cervix may make a very short cup more difficult to reach. Disc fit depends on the space between the vaginal fornix and pubic bone as well as the position of the cervix.
Learning how to check your cervical position may help you narrow down your options. Measure during your period because cervical position at another stage of your cycle may not reflect where it sits while you are using the product.
Age, birth history and generic sizing labels do not determine internal anatomy by themselves. Treat manufacturer recommendations as starting guidance and compare the product's actual measurements whenever possible.
What if you have a tilted or retroverted uterus?
A tilted or retroverted uterus does not automatically prevent you from using a cup or disc. However, the direction of the cervix may affect how the product needs to be angled or positioned.
Some people may find it easier to position a disc beneath an angled cervix, while others may prefer the fit of a cup. There is no universal product recommendation based on uterine position alone.
Capacity and heavy flow
Both cups and discs are available in different capacities. Although discs can look larger, they do not always provide a greater usable capacity once the flexible reservoir is positioned inside the body.
If you have a heavier flow, compare the stated capacities of individual products and consider how often you are comfortable emptying them. Remember that manufacturers may measure capacity differently, particularly for flexible disc reservoirs.
Fit still comes first. A high-capacity product will not be useful if it is uncomfortable, difficult to position or repeatedly leaks.
Heavy or prolonged bleeding can sometimes require medical assessment. Speak with a healthcare professional if your bleeding has changed, affects your daily life, causes symptoms such as dizziness or shortness of breath, or concerns you.
Insertion and removal
Cups and discs have different learning curves. Neither method should require force or cause ongoing pain.
Inserting a menstrual cup
- Wash and dry your hands.
- Fold the cup using a fold you can hold comfortably.
- Guide it gently back towards your tailbone.
- Allow the cup to open inside the vaginal canal.
- Check that the body is not still folded or significantly dented and that the cup feels comfortable.
See How to Use a Menstrual Cup for complete insertion, removal and cleaning instructions.
Inserting a menstrual disc
- Wash and dry your hands.
- Pinch the sides of the rim together so the disc becomes long and narrow.
- Guide the back rim towards your tailbone and behind the cervix.
- Tuck the front rim securely behind the pubic bone.
- If comfortable, check that the cervix is positioned above the reservoir rather than outside its edge.
See How to Use a Menstrual Disc for detailed positioning, troubleshooting and cleaning guidance.
Removing a menstrual cup
Use the stem only to help locate the cup. Reach the base and pinch it or press the cup wall inward to release the seal before bringing the cup down. Pulling on the stem alone can be uncomfortable and may not release the seal.
Removing a menstrual disc
Hook a clean finger under the front rim or use the product's removal feature as directed. Lower the rim from behind the pubic bone, then slide the disc forward while keeping it as level as possible.
Disc removal can be messier while you are learning because the reservoir is shallow and flexible. Removing it over the toilet or in the shower may make the process easier.
Period sex, exercise, swimming and sleep
Penetrative vaginal sex
Menstrual cups are generally not designed to be worn during penetrative vaginal sex.
Some menstrual discs are specifically designed for this use because they sit higher and have a flatter profile. Check the instructions for the individual disc rather than assuming every model is suitable.
A menstrual disc is not contraception and does not protect against sexually transmitted infections. See our period sex guide for more information.
Exercise and swimming
Both cups and discs can be worn during many physical activities, including exercise and swimming, when they fit correctly and are used according to their instructions.
Repeated leaking, pressure or discomfort during movement may indicate a positioning problem or that the product's size, shape or firmness is not suitable for you.
Sleeping
Whether you can sleep with a cup or disc depends on the product's stated wear time and your flow. Calculate the entire time the product will remain inserted rather than only the hours you expect to be asleep.
For menstrual cups supplied in Australia, the product information must state a maximum duration of use that does not exceed 12 hours. This requirement should not be presented as a universal wear-time recommendation for menstrual discs. Follow the instructions supplied with your particular product and empty it sooner if required by your flow.
Menstrual cups and discs with an IUD
If you have an intrauterine device, discuss your preferred internal period product with the healthcare professional who fitted or manages it.
Research into menstrual cup use and IUD expulsion is still developing. A 2023 systematic review found that the available studies were limited and disagreed about whether cup use was associated with higher expulsion rates. A 2024 analysis of data from a copper-IUD trial found higher odds of expulsion among cup users with one of the two IUD designs studied, but not the other. Accidental self-removal was more likely among cup users regardless of the IUD design.
These findings should not be generalised to every IUD or every individual. They do mean that cup use with an IUD deserves individual advice rather than a blanket assurance.
If you use a cup with an IUD, always release the cup's seal before bringing it down. Take care not to catch the IUD threads between the cup and the vaginal wall.
Direct evidence about menstrual discs and IUDs is much more limited. Do not assume that research about cups automatically applies to discs, but continue to follow your disc manufacturer's guidance and seek individual clinical advice.
Read Can You Use a Menstrual Cup or Disc with an IUD? for a fuller explanation of the evidence and precautions.
Safety, cleaning and wear time
Menstrual cups have been studied more extensively than menstrual discs. Overall findings about cup use are reassuring, but the quality of the available research varies and there is comparatively little evidence evaluating menstrual discs.
This difference in evidence should not be interpreted as proof that one product prevents infection or is automatically safer than the other.
Whichever product you choose:
- wash and dry your hands before insertion and removal
- follow the manufacturer's first-use, cleaning and disinfection instructions
- do not exceed the stated wear time
- empty the product sooner if required by your flow
- inspect reusable products for tears, cracks, stickiness or other deterioration
- store reusable products as directed, usually clean, dry and able to breathe
- never wash, boil or reuse a product sold as single-use
Toxic shock syndrome
Toxic shock syndrome is rare but serious. Follow the hygiene and wear-time instructions supplied with your product.
Remove the product and seek urgent medical help if you develop symptoms such as a sudden high temperature, vomiting, diarrhoea, dizziness, confusion or a widespread red rash while using an internal period product.
Stop using the product and seek medical advice if you experience sharp or persistent pain, difficulty urinating, unusual discharge or odour, or symptoms that continue after removal.
How to choose between a menstrual cup and disc
Start with the features most likely to affect your comfort and confidence rather than asking which product is “best”.
A menstrual cup may suit you if:
- you prefer a cup-shaped product that sits within the vaginal canal
- you want a broad choice of cup lengths, diameters, shapes and firmness levels
- you are comfortable checking that the cup has opened
- you are comfortable releasing the seal before removal
- you prefer to remove a more structured reservoir
A menstrual disc may suit you if:
- you prefer a higher, flatter internal fit
- you do not want a product that relies on a cup-style seal
- you want the option of a product designed for penetrative vaginal sex
- you prefer a tab, notch, loop or other disc removal feature
- you are comfortable learning to position the product behind the cervix and pubic bone
You do not have to choose one product forever. Some people use different products on different days of their period or for different activities. Your preferences may also change over time.
For personalised starting guidance, take the Find Your Best Fit Quiz. You can also compare specific products in the Menstrual Cups Comparison Chart and Menstrual Disc Comparison Chart.
Frequently asked questions
Which is easier for beginners: a menstrual cup or disc?
There is no universal answer. Some people find it easier to feel whether a cup has opened, while others prefer pinching and inserting a disc without needing to create or release a cup-style seal. Your anatomy, dexterity and comfort with the removal method can influence which feels easier.
Which is better for a low cervix?
A shorter cup may suit some people with a low cervix, while others prefer a disc. However, a disc is not automatically suitable simply because it sits higher. Its diameter and the available space behind the pubic bone still need to suit your anatomy.
Do menstrual discs always hold more than cups?
No. Capacity varies substantially between products, and a disc's flexible reservoir may not retain its full stated volume once positioned. Compare individual products rather than assuming that every disc has a greater usable capacity.
Which product is less messy to remove?
A cup's more structured body may make it easier to keep upright during removal. A disc's shallow reservoir can move or spill, particularly while you are learning. Removal features and technique can make a substantial difference, so this is not the same for every product or person.
Can I switch between a menstrual cup and disc during my period?
Yes. You can use different period products at different times, provided each one is cleaned, stored and used according to its instructions.
What if my cup or disc keeps leaking?
Repeated leakage does not necessarily mean that you need a higher-capacity product. Check whether a cup has opened, whether a disc is positioned beneath the cervix, whether the product fits your anatomy and whether you are emptying it often enough for your flow.
If the problem continues, compare a different size, shape, firmness or product type.
The bottom line
Menstrual cups and discs collect menstrual flow, but their fit and removal methods are different.
A cup opens within the vaginal canal and forms a seal against the vaginal walls. A disc sits higher, with its reservoir beneath the cervix and its rim supported by the vaginal fornix and pubic bone.
The most suitable option is the one whose dimensions, position and features make sense for your anatomy, flow, comfort and lifestyle. If the first product you try does not suit you, that does not mean all cups or all discs will feel the same.
Related reading
- How to Use a Menstrual Cup: Step-by-Step Guide
- How to Use a Menstrual Disc: Step-by-Step Guide
- How to Measure Your Cervical Position
- Menstrual Cups Comparison Chart
- Menstrual Disc Comparison Chart
- Can You Use a Menstrual Cup or Disc with an IUD?
- Are Menstrual Cups Safe? What the Science Says
This article provides general information and is not a substitute for individual medical advice. Speak with a qualified healthcare professional if you have symptoms, pain or concerns about your health.
Sources
- Therapeutic Goods Administration, Meeting regulatory requirements for menstrual cups in Australia
- van Eijk AM et al., Menstrual cup use, leakage, acceptability, safety and availability: a systematic review and meta-analysis
- Bowman N and Thwaites A, Menstrual cup and risk of IUD expulsion: a systematic review
- Brown JE et al., Menstrual cup use and intrauterine device expulsion in a copper intrauterine device randomised trial
- van Eijk AM et al., Effect of menstrual cups on vaginal health, reproductive tract and urogenital infections: a systematic review and meta-analysis