# Calculating segment cM from 23andMe matches?

## Does 23andMe Show cM?

23andMe: You can see the percentage of shared DNA from the main DNA Relatives home page. To convert the percentage into centimorgans, just multiply your percentage by 68 (that will at least get you close). You can also see total shared cMs in the chromosome browser tool (go to Tools > DNA Relatives > DNA).

## How many cM is a good DNA match?

A strong match will have around 200 cM or more.

## How many centimorgans are in a DNA segment?

Centimorgans: length of DNA

Since a person inherits half of their DNA from each parent, you share about 3700 cM with each parent. The exact number for each parent/child relationship can vary slightly, but not by a lot.

## How many cM of DNA do cousins share?

Note that a given relationship, such as first cousins, can share varying amounts of DNA because of recombination (“shuffling” that occurs at conception). You usually share about 850 cM with a first cousin, but that number could be as low as 553 or as high as 1,225 cM.

## How many cM do 4th cousins share?

4th cousin and more distant

You will share about 20–85 centimorgans with a fourth cousin and 6–20 centimorgans with a fifth through eighth cousin.

## How many centimorgans is significant?

With this in mind, we can define a high cM match as someone who shares at least about 900 centimorgans, or almost 12.5% of our DNA with us. At lower amounts of shared DNA, the relationship possibilities expand greatly, and include more distantly related relatives.

## How many cM do full siblings share?

around 3500 centimorgans

The amount shared is usually expressed in something called centimorgans. Full siblings tend to share around 3500 centimorgans while half siblings share closer to 1750.

## How many generations is 1% ethnicity?

With each generation, your DNA divides. So, for a 1% DNA result, you would be looking at around seven generations. This would go back to your x5 great grandparent.

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