Research · Free to use
Family Relationship Calculator
Find a relationship from the number of parent-child steps between two people and a shared ancestor.
Your result will appear here. You can download it without registering.
How to use this tool
Count one step for a parent, two for a grandparent, and three for a great-grandparent. Use the nearest shared ancestor for the path you are describing. Multiple shared ancestors can produce more than one relationship.
A practical example
If each person is three generations below the shared ancestor, they are second cousins. If one is three steps down and the other four, they are second cousins once removed.