What is a second cousin?
Your second cousins share a great-grandparent with you but not a grandparent. Each of you is three generations below that common ancestor. Put another way, a second cousin is the child of your parent's first cousin — one generation more distant than a first cousin.
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FAQs
What do second cousins share?+
Second cousins share a great-grandparent. Their grandparents were siblings.
Does the calculator store my family details?+
No — it runs entirely in your browser. Nothing you enter is uploaded or saved on our servers.
Start with one relative and see what comes back.
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