Also, if anyone has a link for comparisons other than a ruler I would appreciate seeing the website.

You are watching: Which is bigger mm or cm

Example: a sweet pea or a walnut, etc.


There are 10mm to each centimeter; therefore, a mm is definitely smaller than a centimeter. (A centimeter is slightly less than 1/2 inch.) Annies are usually measured in mm, however, I have heard of some measured in centimeters when they get to the "giant" size. I don"t know of equivalent measurements like you are asking, but someone else may. If you look at your standard ruler, the cm with the mm are on the opposite side of the inches. I used to just measure it out on a paper and draw a circle around the dimensions to get an approx. idea of the size of mine, and also used the mm to determine the neck size.


Jeanne February 11, 2016, 5:06pm #3

Thanks or the information. I saw the ruler comparisons, however in the different sites, 1 said centimeter is bigger and the other said millimeter is bigger

My GF just found out she has a tumor around 5 millimeters but described it as the size of a persons hand. She is upset and I didn"t know what to say but felt she may be confused on MM vs CM"s.

Drawing the circle is a great idea. I happen to have my aneursym CD so I can actually see it pre-op.

I can"t remember if mine was 7.5 cm or 7.5 mm. I only remember the 7.5.

Thanks again. Patty said:


There are 10mm to each centimeter; therefore, a mm is definitely smaller than a centimeter. (A centimeter is slightly less than 1/2 inch.) Annies are usually measured in mm, however, I have heard of some measured in centimeters when they get to the "giant" size. I don"t know of equivalent measurements like you are asking, but someone else may. If you look at your standard ruler, the cm with the mm are on the opposite side of the inches. I used to just measure it out on a paper and draw a circle around the dimensions to get an approx. idea of the size of mine, and also used the mm to determine the neck size.


Patty6 February 11, 2016, 5:26pm #4

Well, then her tumor is exactly 1/2 centimeter--about the size of a baby pea in my estimation. Yours must have been 7.5 mm (exactly like mine) because 7.5 cm would definitely be the width of an average woman"s hand and that is huge! Jeanne said:


Thanks or the information. I saw the ruler comparisons, however in the different sites, 1 said centimeter is bigger and the other said millimeter is bigger

My GF just found out she has a tumor around 5 millimeters but described it as the size of a persons hand. She is upset and I didn"t know what to say but felt she may be confused on MM vs CM"s.

Drawing the circle is a great idea. I happen to have my aneursym CD so I can actually see it pre-op.

I can"t remember if mine was 7.5 cm or 7.5 mm. I only remember the 7.5.

Thanks again. Patty said:


There are 10mm to each centimeter; therefore, a mm is definitely smaller than a centimeter. (A centimeter is slightly less than 1/2 inch.) Annies are usually measured in mm, however, I have heard of some measured in centimeters when they get to the "giant" size. I don"t know of equivalent measurements like you are asking, but someone else may. If you look at your standard ruler, the cm with the mm are on the opposite side of the inches. I used to just measure it out on a paper and draw a circle around the dimensions to get an approx. idea of the size of mine, and also used the mm to determine the neck size.


Jeanne February 11, 2016, 8:32pm #5

I just spoke with my GF and she has a 5.2 cm pancoast tumor. She had a port inserted this morning and will have radiation, then chemo. They will try to shrink it and then surgically remove it.

It was her husband whom told my husband that it was the size of a hands fist. He must have been in a panic mode.

I pulled my aneurysm report out and mine was 7.5 and I was told that it was the size that most ani"s have a tendancy to burst at or grow bigger. So right the and there I had mine clipped without even thinking about it. My feeling was either fix it or have a stroke just worrying about it growing. To much stress to NOT have it repaired.

Now in what you said that it is big or did I misunderstand you? Because I have my MRI & Cat Scan CD"s and in looking at it pre-op it looks like its about 1/2" or less, def not the size of a fist.

I did look up my GF"s tumor and just not sure about the prognosis of it especially because its malignant. She said the doctor said its curable and good prognosis. Either they do not want to tell her the seriousness of it "yet" or the info online is wrong. They will remove it once the radiation & chemo is completed.

All we can do is pray for all of us going through these awful conditions and hope for the best. Any type of growth in any part of a body is a scary, stressful situation to be in.

Thank you for your information and hope all is going well. Bless you and everyone in this group. The best support site for aneurysms or any brain condition. Jeanne

Patty said:


Well, then her tumor is exactly 1/2 centimeter--about the size of a baby pea in my estimation. Yours must have been 7.5 mm (exactly like mine) because 7.5 cm would definitely be the width of an average woman"s hand and that is huge! Jeanne said:


Thanks or the information. I saw the ruler comparisons, however in the different sites, 1 said centimeter is bigger and the other said millimeter is bigger

My GF just found out she has a tumor around 5 millimeters but described it as the size of a persons hand. She is upset and I didn"t know what to say but felt she may be confused on MM vs CM"s.

Drawing the circle is a great idea. I happen to have my aneursym CD so I can actually see it pre-op.

I can"t remember if mine was 7.5 cm or 7.5 mm. I only remember the 7.5.

Thanks again. Patty said:


There are 10mm to each centimeter; therefore, a mm is definitely smaller than a centimeter. (A centimeter is slightly less than 1/2 inch.) Annies are usually measured in mm, however, I have heard of some measured in centimeters when they get to the "giant" size. I don"t know of equivalent measurements like you are asking, but someone else may. If you look at your standard ruler, the cm with the mm are on the opposite side of the inches. I used to just measure it out on a paper and draw a circle around the dimensions to get an approx. idea of the size of mine, and also used the mm to determine the neck size.


I just spoke with my GF and she has a 5.2 cm pancoast tumor. She had a port inserted this morning and will have radiation, then chemo. They will try to shrink it and then surgically remove it.

It was her husband whom told my husband that it was the size of a hands fist. He must have been in a panic mode.

I pulled my aneurysm report out and mine was 7.5 and I was told that it was the size that most ani"s have a tendancy to burst at or grow bigger. So right the and there I had mine clipped without even thinking about it. My feeling was either fix it or have a stroke just worrying about it growing. To much stress to NOT have it repaired.

Now in what you said that it is big or did I misunderstand you? Because I have my MRI & Cat Scan CD"s and in looking at it pre-op it looks like its about 1/2" or less, def not the size of a fist.

I did look up my GF"s tumor and just not sure about the prognosis of it especially because its malignant. She said the doctor said its curable and good prognosis. Either they do not want to tell her the seriousness of it "yet" or the info online is wrong. They will remove it once the radiation & chemo is completed.

All we can do is pray for all of us going through these awful conditions and hope for the best. Any type of growth in any part of a body is a scary, stressful situation to be in.

Thank you for your information and hope all is going well. Bless you and everyone in this group. The best support site for aneurysms or any brain condition. Jeanne

Patty said:


Well, then her tumor is exactly 1/2 centimeter--about the size of a baby pea in my estimation. Yours must have been 7.5 mm (exactly like mine) because 7.5 cm would definitely be the width of an average woman"s hand and that is huge! Jeanne said:


Thanks or the information. I saw the ruler comparisons, however in the different sites, 1 said centimeter is bigger and the other said millimeter is bigger

My GF just found out she has a tumor around 5 millimeters but described it as the size of a persons hand. She is upset and I didn"t know what to say but felt she may be confused on MM vs CM"s.

Drawing the circle is a great idea. I happen to have my aneursym CD so I can actually see it pre-op.

I can"t remember if mine was 7.5 cm or 7.5 mm. I only remember the 7.5.

See more: Why Do Guys Like When You Swallow ? (Deep Throat Divas) Do You Have To Swallow When Giving Oral Sex

Thanks again. Patty said:


There are 10mm to each centimeter; therefore, a mm is definitely smaller than a centimeter. (A centimeter is slightly less than 1/2 inch.) Annies are usually measured in mm, however, I have heard of some measured in centimeters when they get to the "giant" size. I don"t know of equivalent measurements like you are asking, but someone else may. If you look at your standard ruler, the cm with the mm are on the opposite side of the inches. I used to just measure it out on a paper and draw a circle around the dimensions to get an approx. idea of the size of mine, and also used the mm to determine the neck size.


Jeanne, here’s one, http://waynesword.palomar.edu/pinhead.htm.

When I was in ICU, one of the nurses said my aneurysm was 12.5 cm, partner wanted confirmation and a doctor said 12.5 mm. It is important to know the difference, the rule of ten, etc

Oh I just thought of something…see if you or your husband has a drill bit gauge. Now days the cheap ones are plastic with holes and measurements in mm or fractions or decimals. They are used to figure out the thickness of a drill bit or screw or nail. Some will have a ruler along the sides, one metric, the other standard. It might give you a better idea of size. Some are a set with metric and standard on different plates. Though I really like Patty’s idea since you can draw it out quickly and put the neck in. Thanks for the idea Patty!