Menstrual Cup Comparison Chart (Metric)
Looking for the original Menstrual Cup Comparison Chart (Imperial measurements)?
Click the top of each column to sort by brand, length, diameter, or capacity.
Brand↕  Image  Size  Length↕  Diameter↕  Capacity (To Holes)↕  Capacity (Listed)↕  Stem  Firmness↕ 

Blossom  S  52 mm  42 mm  22 ml  20 ml  10 mm Solid Round  3  
Blossom  L  55 mm  45 mm  27 ml  25 ml  10 mm Solid Round  3  
bfree  S  44 mm  38 mm  13 ml  10 ml  7 mm Nub  3  
bfree  M  48 mm  42 mm  18 ml  15 ml  9 mm Nub  3  
bfree  L  53 mm  48 mm  30 ml  25 ml  11 mm Nub  5  
Cora  S  46 mm  42 mm  17 ml  21 ml  19 mm Solid Round  3  
Cora  L  51 mm  46 mm  22 ml  28 ml  15 mm Solid Round  3  
Diva Cup  XS (0)  57 mm  40 mm  N/A  17 ml  10 mm Hollow Round  3  
Diva Cup  S (1)  57 mm  43 mm  24 ml  30 ml  10 mm Hollow Round  3  
Diva Cup  L (2)  57 mm  46 mm  28 ml  30 ml  10 mm Hollow Round  3  
Dot  OS  50 mm  45 mm  28 ml  28 ml  17 mm Solid Notched Tab  2  
EvaCup  S  48 mm  43 mm  25 ml  25 ml  14 mm Solid Round  3  
EvaCup  L  51 mm  46 mm  30 ml  30 ml  16 mm Solid Round  3  
Femmecup  OS  50 mm  45 mm  N/A  30 ml  15 mm Solid Round  N/A  
FemmyCycle  S  38 mm  31 mm  20 ml  17 ml  19 mm Ring  2  
FemmyCycle  L  43 mm  36 mm  25 ml  30 ml  20 mm Ring  2  
FemmyCycle  Low  43 mm  36 mm  25 ml  30 ml  6 mm Ring  2  
Flex  S  46 mm  43 mm  N/A  22 ml  28 mm Pull Ring  N/A  
Flex  L  53 mm  46 mm  30 ml  30 ml  28 mm Pull Ring  N/A  
Formoonsa  T  31 mm  36 mm  10 ml  10 ml  24 mm Loop  4  
Formoonsa  S  37 mm  44 mm  20 ml  20 ml  15 mm Loop  3  
Formoonsa  L  44 mm  48 mm  30 ml  30 ml  10 mm Loop  4  
Formoonsa  XL  52 mm  46 mm  30 ml  30 ml  18 mm Solid Flat  Soft 3/Classic 4  
Fun Cup  S (A)  53 mm  40 mm  20 ml  20 ml  None  1  
Fun Cup  L (B)  58 mm  43 mm  30 ml  30 ml  None  1  
Fleurcup  S  47 mm  41 mm  N/A  20 ml  23 mm Solid Flat  3  
Fleurcup  L  52 mm  46 mm  N/A  28 ml  18 mm Solid Flat  3  
Genial Day  M  59 mm  40 mm  25 ml  30 ml  11 mm Hollow Round  2  
Genial Day  L  59 mm  45 mm  29 ml  30 ml  11 mm Hollow Round  2  
Hello (TPE)  XS  47 mm  38 mm  17 ml  17 ml  10 mm Solid Round Nub  5  
Hello (TPE)  S/M  49 mm  41 mm  21 ml  21 ml  10 mm Solid Round Nub  5  
Hello (TPE)  L  54 mm  45 mm  28 ml  28 ml  10 mm Solid Round Nub  5  
JuJu Cup  S  46 mm  40 mm  18 ml  20 ml  19 mm Solid Thin  4  
JuJu Cup  L  50 mm  46 mm  27 ml  30 ml  19 mm Solid Thin  4  
JuJu Cup  4 Low  40 mm  48 mm  23 ml  23 ml  10 mm Solid Thin  4  
JuJu Cup  3 High  58 mm  40 mm  22 ml  22 ml  20 mm Solid Thin  4  
Keeper (Rubber)  L (A)  54 mm  45 mm  15 ml  25 ml  25 mm  5  
Keeper (Rubber)  S (B)  54 mm  46 mm  N/A  21 ml  25 mm  5  
Keeper Moon Cup  L (A)  54 mm  45 mm  15 ml  25 ml  25 mm  N/A  
Keeper Moon Cup  S (B)  54 mm  46 mm  N/A  21 ml  25 mm  N/A  
LadyCup  S  46 mm  40 mm  15 ml  21 ml  19 mm Hollow Round  5  
LadyCup  L  53 mm  46 mm  21 ml  34 ml  13 mm Hollow Round  5  
LaliCup  S  46 mm  40 mm  22 ml  27 ml  25 mm  3  
LaliCup  M  51 mm  44 mm  30 ml  36 ml  22 mm  3  
LaliCup  L  54 mm  47 mm  35 ml  41 ml  19 mm  3  
LENA  S  46 mm  41 mm  21 ml  25 ml  25 mm Solid Flat  4  
LENA  L  51 mm  45 mm  30 ml  30 ml  19.7 mm Solid Flat  4  
LENA Sensitive  S  46 mm  41 mm  21 ml  25 ml  25 mm Solid Flat  2  
LENA Sensitive  L  51 mm  45 mm  30 ml  30 ml  19.7 mm Solid Flat  2  
Leona Air Flow  S  54 mm  41 mm  22 ml  N/A ml  13 mm Round Hollow  4  
Leona Air Flow  L  58 mm  45 mm  30 ml  N/A ml  13 mm Round Hollow  4  
Lily Cup  S  78 mm  40 mm  25 ml  25 ml  Length incl stem  2  
Lily Cup  L  78 mm  44 mm  28 ml  28 ml  Length incl stem  2  
Lily Cup Compact  S  58 mm  42 mm  15 ml  20 ml  Length incl stem  1  
Lily Cup Compact  L  58 mm  45 mm  20 ml  25 ml  Length incl stem  1  
Lily Cup One  OS  47 mm  39 mm  20 ml  20 ml  Length incl stem  1  
LouLou  S  45 mm  42 mm  20 ml  25 ml  25 mm Solid Round  Blue 3/Pink 4  
LouLou  L  50 mm  46 mm  30 ml  30 ml  20 mm Solid Round  Blue 3/Pink 4  
Lunette  S (1)  47 mm  41 mm  21 ml  25 ml  25 mm Solid Flat  3  
Lunette  L (2)  52 mm  46 mm  27 ml  30 ml  20 mm Solid Flat  4  
Luv Ur Body  S  47 mm  42 mm  25 ml  25 ml  18 mmleaf  4  
Luv Ur Body  M  62 mm  45 mm  38 ml  45 ml  20 mm leaf  4  
Luv Ur Body  L  57 mm  48 mm  36 ml  46 ml  20 mm leaf  4  
Mermaid Cup  S  52 mm  42 mm  16 ml  28 ml  24 mm Solid  2  
Mermaid Cup  L  56 mm  46 mm  20 ml  34 ml  24 mm Solid  2  
MermaidGuppy  S  40 mm  45 mm  N/A  24 ml  24 mm Solid  TBD  
MermaidGuppy  L  40 mm  48 mm  N/A  28 ml  24 mm Solid  TBD  
MCUK (Mooncup UK)  L (A)  50 mm  46 mm  20 ml  30 ml  21 mm Hollow Round  N/A  
MCUK (Mooncup UK)  S (B)  50 mm  43 mm  15 ml  29 ml  21 mm Hollow Round  N/A  
MeLuna (TPE)  S  45 mm  38 mm  15 ml  15 ml  12 mm Stem, 8 mm Ball, or 10 mm Ring  Classic 4 / Soft 2 / Sport 5  
MeLuna (TPE)  M  48 mm  41 mm  20 ml  20 ml  13 mm Stem, 9 mm Ball, or 12 mm Ring  Classic 4 / Soft 2 / Sport 5  
MeLuna (TPE)  L  51 mm  44 mm  24 ml  24 ml  15 mm Stem, 11 mm Ball, or 15 mm Ring  Classic 4 / Soft 2 / Sport 5  
MeLuna (TPE)  XL  56 mm  47 mm  28 ml  30 ml  15 mm Stem, 9 mm Ball, or 13 mm Ring  Classic 4 / Soft 2 / Sport 5  
MeLuna Shorty (TPE)  S  35 mm  38 mm  8 ml  8 ml  12 mm Stem, 7 mm Ball, or .10 mm Ring  Classic 4 / Soft 2 / Sport 5  
MeLuna Shorty (TPE)  M  38 mm  41 mm  10 ml  10 ml  13 mm Stem, 7 mm Ball, or .10 mm Ring  Classic 4 / Soft 2 / Sport 5  
MeLuna Shorty (TPE)  L  41 mm  44 mm  14 ml  14 ml  14 mm Stem, 7 mm Ball, or 11 mm Ring  Classic 4 / Soft 2 / Sport 5  
MeLuna Shorty (TPE)  XL  44 mm  47 mm  16 ml  16 ml  15 mm Stem, 8 mm Ball, or 11 mm Ring  Classic 4 / Soft 2 / Sport 5  
Merula  One Size  39 mm  46 mm  38 ml  38 ml  72 mm ladder (trimmed 61 mm or 50 mm)  5  
Merula XL  OS  50 mm  46 mm  50 ml  50 ml  26 mm Ladder  5  
MonthlyCup  S  45 mm  37 mm  15 ml  15 ml  10 mm Thin Solid  3  
MonthlyCup  M  55 mm  43 mm  22 ml  22 ml  10 mm Thin Solid  5  
MonthlyCup  L  55 mm  47 mm  30 ml  34 ml  10 mm Thin Solid  5  
MyCup  T  45 mm  28 mm  16 ml  22 ml  18 mm Solid  5  
MyCup  S  45 mm  42 mm  22 ml  29 ml  18 mm Solid  4  
MyCup  L  51 mm  46 mm  31 ml  40 ml  16 mm Solid  4  
NÜDIE  S  56 mm  38 mm  18 ml  18 ml  Pebble Inc. in Length  N/A  
NÜDIE  M  61 mm  42 mm  25 ml  24 ml  Pebble Inc. in Length  N/A  
NÜDIE  L  66 mm  46 mm  34 ml  32 ml  Pebble Inc. in Length  N/A  
Oi (TPE)  S  49 mm  35 mm  17 ml  30 ml  11 mm Hollow Round  2  
Oi (TPE)  M  59 mm  40 mm  25 ml  30 ml  11 mm Hollow Round  2  
Oi (TPE)  L  59 mm  45 mm  29 ml  30 ml  11 mm Hollow Round  2  
OrganiCup  Mini  39 mm  37 mm  15 ml  15 ml  19 mm Stem  2  
OrganiCup  A  47 mm  40 mm  21 ml  25 ml  15 mm Stem  2  
OrganiCup  B  55 mm  45 mm  27 ml  30 ml  15 mm Stem  2  
Ruby Cup  S  46 mm  40 mm  20 ml  24 ml  19 mm Stem  2  
Ruby Cup  M  51 mm  45 mm  24 ml  34 ml  17 mm Stem  2  
Saalt  S  47 mm  41 mm  20 ml  25 ml  23 mm Solid Flat  4  
Saalt  L  52 mm  46 mm  30 ml  30 ml  18 mm Solid Flat  4  
Saalt Soft  S  47 mm  41 mm  20 ml  25 ml  23 mm Solid Flat  2  
Saalt Soft  L  52 mm  46 mm  30 ml  30 ml  18 mm Solid Flat  2  
Sckoon Cup  S (1)  40 mm  40 mm  N/A  23 ml  30 mm Thin Soft Taper  1  
Sckoon Cup  L (2)  50 mm  45 mm  29 ml  30 ml  20 mm Thin Soft Taper  1  
Selena  S  45 mm  39 mm  15 ml  21 ml  13 mm Ring  4  
Selena  M  48 mm  42 mm  20 ml  26 ml  14 mm Ring  4  
Selena  L  53 mm  45 mm  25 ml  33 ml  14 mm Ring  4  
Shecup  OS  54 mm  44 mm  N/A  28 ml  5.5 mm Knob  N/A  
SiBell  S  47 mm  41 mm  20 ml  20 ml  27 mm Solid Thin Notched  1  
SiBell  L  52 mm  46 mm  30 ml  30 ml  22 mm Solid Thin Notched  1  
Super Jennie  S  48 mm  43 mm  26 ml  32 ml  9 mm Stem  1  
Super Jennie  L  52 mm  47 mm  34 ml  41 ml  16 mm Stem  1  
Tampax  S  42 mm  47 mm  20 ml  24 ml  23 mm Flat Solid  4  
Tampax  L  47 mm  53 mm  30 ml  37 ml  16 mm Flat Solid  4  
Tieutcup  S  46 mm  38 mm  23 ml  32 ml  24 mm Flat Solid  3  
Tieutcup  L  50 mm  43 mm  30 ml  42 ml  22 mm Flat Solid  4  
UltuCup  Mini  53 mm  42 mm  21 ml  25 ml  8 mm Solid Thin  4  
UltuCup  S  62 mm  42 mm  25 ml  30 ml  8 mm Solid Thin  3  
UltuCup  L  62 mm  46 mm  30 ml  40 ml  8 mm Solid Thin  3  
Venus  S  47 mm  42 mm  23 ml  29 ml  24 mm Solid  3  
Venus  L  56 mm  47 mm  39 ml  47 ml  15 mm Solid  3  
XO Flo  OS  55 mm  45 mm  38 ml  38 ml  31 mm Ball Taper  4  
XO Flo  Mini  45 mm  41 mm  25 ml  31 ml  29 mm Ball Taper  4  
Yuuki  S (1)  49 mm  42 mm  20 ml  25 ml  18 mm Hollow Round  5  
Yuuki  L (2)  56 mm  47 mm  33 ml  37 ml  18 mm Hollow Round  5  
Yuuki Soft  S (1)  49 mm  42 mm  20 ml  25 ml  18 mm Hollow Round  4  
Yuuki Soft  L (2)  56 mm  47 mm  33 ml  37 ml  18 mm Hollow Round  4 
Unless otherwise noted, all cups are made from medical grade silicone. Rubber cups are quite firm and TPE ((thermoplastic elastomer)) cups are safe for those with silicone allergies. Capacity is to holes when known. Please note that inclusion in this chart does not equal an endorsement.
Looking for a cup not listed?
Brands that we do list, but that may go by another name on the visual tool, chart, or both (related post: Private Label Menstrual Cups)
 Look for Oi (Genial Day, TOTM, Masmi, SilverCare, Farmacomfort)
 Look for UltuCup (Casco Cup, Hesta, Green Cup of Maine, Wā Collective, Lincup, LifeCup, Halo)
 Look for SiBell (Clari Cup, Soch)
 Look for MeLuna (Silja)
Brands we don’t list for ethical reasons (knockoffs, unclear safety, lack of FDA clearance, etc.)

Aneer, Anytime, Athena, Bloody Buddy, Bodybay, CaliCup, Dutchess, InvisiCup, Leasen, Luna Cup, Pixie Cup, Rebel Kate, Vida
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Writing manually is time consuming, but there is
solution for this. Just search for; Masquro’s strategies
The sckoon website says the size 1 is 40mm, but I have one, and it’s actually 45 mm long, just FYI.
Are these capacity measures for the whole cup or the suction holes?
the note below the chart says that capacity is to holes, when known
well that doesn’t seem right since i have yuuki 1 and its safe capacity is 14ml and the whole capacity is 24ml and in the chart it is 25ml. where did they get that from? yuuki measures are even noted on yuukicup site.
Awesome comparison chart, so useful as I’m needing a new cup after having a baby and it allows me to compare measurements with my current cup.
Just noticed one thing – I think you’ve got the sizes round the wrong way for the mooncup uk – as the A is wider than the B by 3mm. Confusing because most other brands are round the other way!
OrganiCup has had an update on sizing!
Size A –
Diameter: 40 mm
Total Height: 65 mm
Stem: 15 mm
Capacity: 25 ml
Size B
Diameter: 45 mm
Total Height: 70 mm
Stem: 15 mm
Capacity: 30 ml
There is a mistake on the diameter of the Monthly cup Size M (or “Normal”).
These are the measurements of the official website:
43 mm diameter
65 mm total length
55 mm without the stem
up to 22 ml in capacity
i noticed you dont have the cup i use “EVE cup” by Femfulness… its quite short, with a flattened stem and tapered end, and quite firm. . (my whole cervix seems to fill/sit right in the cup—long thin cervix… is that a thing? AND cervix sits quite low, some times….)
Can you include the length with and without stem?
Do all cups have the measurement on the side? (if not which dont i need the measure lines)
If the measure lines are there, how often are they metric? old?(imperial)… perhaps its just the made in USA ones using the old fashioned measure units?
thanks in advance
i’m assuming length given IS without stem… and there’s a separate column for stem, and it includes stem length 😉
I think you should differentiate the firmness of the cup at the top/rim vs. the body of the cup. The two can be very different and both are a consideration!
Hello, I’ve been using the Lily Cup One for a while. Now is my third cycle with it and I’ve been stuggling a bit. The only days I could feel the suction everyone is talking about were at the end of my first cycle using it when I had a lighter flow. The quiz suggested the Lunette Cup and it is the same lenght as the one I’m using now. Does that mean that I can continue to struggle to get the hand of it and there is no point in changing?
My stuggles so far:
– leaking
– when inserted feels loose, it doesn’t turn or flip but I can role it with my finger
Otherwise no discomfort when inserting or removing.
I would really appreciate your support! Thank you!
When you don’t list the cups due to ethical reasons, is one of those reasons political? Not trying to start anything, just wondering since ethic differences covers a wide range of issues.
Political reasons haven’t been a consideration. Because cups are an internal device, we do our best to make sure all of the brands we list have been tested to meet safety standards, either by the FDA or a similar governing body in other countries.
Hello, I’m living in korea right now and there is a lot of brand that are not listed XD I know it’s probably not interesting for you if the cup are not available worldwide but maybe you could search a bit more about the option present in different area of the globe ~
I actually just bought my first cup and was trying to use information on here to buy the possible right one but most of the cup listed here are not available to me …
for information I just bought a cup named ‘withcup” , there are two size from what I could find size S(total lenght 7.1 cm, lenght of the stem 2cm, dia 4.2 cm and capacity of 20ml) size L (7.3cm, stem 2cm, dia 4.6 cm , capacity 30ml)
apparently it’s made in korea (south XD) But that could help people living in korea and wanting to start using cups ~ thank you for your website ~ it’s still helped me figure out how to choose my cup in hope it will fit XD
One of our admins just saw this cup at a store in South Korea and hopefully we can get more information on theis brand. It looks very interesting.
The Yuuki Rainbow cups are supposed to be softer than their Soft cups, what rating would you give them? TIA
There seems to be a mistake on the diameter of Organicup A. On the product’s website they state that the diameter of size A is 40 mm while the diameter of size B is 45 mm.
The capacities for the XO Flo mini cup is wrong. According to their website’s sizing chart, it holds 31 ml to the air holes (and presumably a little more to the rim, although the website doesn’t give a number). This guide says 25 ml to the air holes (and 31 to the rim).
I own Lunette and Mooncup (both in small). I only use Lunette, now I understand the issue is probably that its just softer. Mooncup is a bit longer, has thicker rim and I feel that in hardness its probably nr. 4, in case anyone wonders. The Mooncup has long and narrow air channels.
I suggest trying the Freedom Cup! They have a great cause where they give one cup for free to women in need for every cup purchased.
What does it mean when the firmness is “N/A”? Surely every cup has firmess?
I noticed that the MyCup in size Teen has a typo on the width, it’s 38mm wide, not 28mm. I only noticed because I’m trying to find the smallest cup as the small ones I’ve tried so far are too wide. 🙁