Upload to GEDmatch from MyHeritage
Get your raw data
Log in to MyHeritage.
On the menu at the top of the page, hover over the "DNA" tab and then click on "Manage DNA Kits" in the drop down menu.
The next page will show the list of kits that you manage. Click on the three dots all the way to the right side of the kit you'd like to download the raw data for and then choose "Download" from that drop down menu.
A window will pop up with information about what the raw DNA data file includes. Click "Continue". In the next popup, you will be asked to confirm that you'd like to download your raw DNA data, check the box and then click "Continue".
Check the email associated with your MyHeritage account for the next step. The email should arrive within a few minutes. Open the email and click "Click here to continue with the download". This will redirect you back to back to MyHeritage. Enter your password and click the "Download" button. Save the file to your computer where you can easily locate it again but don’t open it or unzip it. You’ll need it as-is to upload to GEDmatch.
How to upload to GEDmatch
Go to GEDmatch and make an account. Check the email address that you just used to register, and click the link in your email to confirm your registration.
Now return to GEDmatch, and log in with your email address and password.
On the main page of GEDmatch, there will be some announcements at the top and two columns of links below those. In the gray box in the right column, you will find a section that is entitled "Upload your DNA Files." Below this title, click on "Generic Uploads (23andme, FTDNA, AncestryDNA, most others)."
Fill in your information "Name of Donor" is the name of whomever the DNA data comes from originally. This is to be that person's legal name. If you leave the "Alias" field blank, this will appear to other DNA matches on the site. If you enter an alias, this will be shown instead of your legal name.
"Sex of donor" is a field that is visible to other testers in the one-to-many results. If you are transgender, intersex, nonbinary or any other expression, you can select whatever best represents you and it will not impact the way your DNA is handled by the database.
In the "Company or source" dropdown, select "MyHeritage."
In the section of the form that begins "When you upload Raw Data to GEDmatch, you agree that the Raw Data is one of the following (select one):" you will most likely be selecting one of the first four options:
DNA of a person for whom you are a legal guardian
DNA of a person who has granted you specific authorization to upload their DNA to GEDmatch
DNA of a person known by you to be deceased
Select the correct response and continue to the next section, which is the most important part if you want to help forensic genealogists! Choose Opt-in to be visible in the public database to all other testers and for comparison with kits used for law enforcement investigations.
At the bottom of the page, there are two buttons. the left one says "choose file." click this button and select the file you downloaded from Ancestry. Then click the button on the right marked "upload". Wait a few minutes. When the file is done uploading and processing, you'll see a big red number. This is your kit number on GEDmatch. the instructions say to "Write this number down," but don't worry - this number will be visible on the main page whenever you log in to GEDmatch so you won't lose it.
Your kit won't be available for everyone to see in their one-to-many lists for a day or two, but if you already know the kit number of someone else you want to compare yourself to, you can use the one-to-one features right away.
If you uploaded your kit because you were asked to by a forensic genealogist, please send a message to the genealogist who asked you and give them your kit number. They won't be able to give you the kit numbers of any active forensic cases, but they will be able to compare your kit to theirs to see if you're a match!