A W-Code is a mathematical way to encode DNA matches and relationships. Each W-Code represents a specific genealogical relationship type as a compact code.
Encodes relationship types such as parent, cousin, half-sibling, aunt/uncle, and more into a standardised format.
Used to build distance matrices from groups of matches where all pairwise relationships are known.
Enables tree prediction by providing the genetic distance values needed to reconstruct family trees.
Enter a shared cM value above to see which W-Codes and relationship types are most likely for that match.