Genealogy calculators
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Family tree math: translate shared-ancestor generations into cousin labels, map birth years to generational cohorts (Pew-style ranges), and estimate how many ancestors you have N generations back with a pedigree-collapse caveat. Factual formulas — relationship labels follow standard genealogy convention.
3 tools in this section
Family Relationship
Find cousin degree and removal from generations to a shared ancestor. Genealogy reference — simplified chart, not legal kinship proof.
Generation
Look up generational cohort from birth year using Pew Research-style year ranges. Social labels — approximate and debated, not precise identity.
Ancestor Count
Count direct ancestors in a family tree by generations back using 2^(n+1) − 2. Pedigree math — assumes distinct ancestors, not pedigree collapse.