Genealogy & History

Relationship Degree Calculator

"Second cousin twice removed" sounds confusing because it is — until you understand the system. Cousin degree is determined by the closest common ancestor; "removed" means generational difference. This calculator does the math.

Generations from Person A to Common Ancestor

Generations from Person B to Common Ancestor

Relationship

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Cousin Relationship Chart

How to read this: The rows = generations from Person A to common ancestor. Columns = generations from Person B. The intersection is the relationship name. Degree = min(genA,genB)−1. Removal = |genA−genB|.