← All tools
Cousin / relationship calculator
Pick how you and your relative each connect to a common ancestor. We'll tell you the relationship in English and Mandarin.
0 = the common ancestor is you. 1 = parent. 2 = grandparent. 3 = great-grandparent.
Same scale, from the other person's side.
Pick a value on each side to see the relationship.
More languages coming soon — see TBD-14.
Examples
Batch — compute many at once
Drop a CSV or JSON file with `you` and `them` columns to compute relationships for many pairs at once. Numbers only; values outside 0–12 are skipped.
Drop a CSV or JSON file, or click to choose
More free tools
- DNA share calculatorPick a relationship and see the average autosomal DNA you'd share — both as a percentage and in centiMorgans (cM). The actual amount varies; the range column shows what's typical.
- Age & generation calculatorTwo calculators in one — work out an exact age between any two dates, or estimate how many generations span two birth years.
- Family tree template generatorType your family's names and dates into the boxes below, then print. Everything stays in your browser — nothing is uploaded.