What is a half first cousin once removed?
A half first cousin once removed combines the two prefixes: 'half' because the linking siblings shared only one parent, and 'once removed' because a one-generation gap separates you. The closer of you stands two generations below the single shared grandparent and the other three.
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FAQs
How many grandparents do half first cousins share?+
Just one. Full first cousins trace back to a shared couple; half first cousins trace back to a single shared grandparent.
What does 'once removed' add?+
A one-generation gap between the two of you — the 'half' and the 'removed' describe different things and stack together.
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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