DNAmosaic: Free Community DNA Relationship Predictor for Family Historians and Genetic Genealogy Research

The DNAmosaic Project
A volunteer-led, non-profit effort advancing how DNA relationships are predicted.
Goal: Build a free, accurate tool available to everyone researching family history.
Help improve DNA predictions for everyone! If you've taken a DNA test with any major company, you can contribute.
Simply submit details of your proven DNA matches anonymously.
1) Register
2) Submit matches
3) Confirm or correct
Done! You've helped!
Your contribution helps thousands of genealogists worldwide turn DNA numbers into meaningful family connections.

What is a "proven relationship"?

A proven relationship means you've confidently identified how your DNA match fits into your family tree.

✓ By personally knowing the match
✓ By confirming through your family tree research
✓ By using 'shared ancestor' feature on your testing site
✓ By DNA triangulation with other "proven" relatives
⚠️ Testing site estimates are NOT accepted as proof

What information would you like from me?

If you have a 'proven DNA match (See left) visit their page on your testing site, record the few details shown below. After registration you will see a form to enter them

Required: Total cM • Segments • Proof method
Optional but very helpful for accurate predictions:
• Match name (for your personal records only)
• Longest segment • Age & sex
• Testing company
• Which side of family (Maternal or Paternal)
Register now and make a difference!
Please enter a first name
Please select age range
Please select sex
Please select background
Please enter valid email