Step-by-step guide

How to find out how two relatives are related

Is she your second cousin or your first cousin once removed? What do you call your father's elder brother in Tamil? My rOoOts works it out from the tree, and the free calculators answer it for anyone.

  • 2 min read
  • 3 steps
  • Phone and computer
  1. 1

    Read it off the cards

    Every card on your tree says how that person is related to you: Aunt, Niece, Brother-in-law, and so on. Tap someone and their direct line lights up, so you can see exactly how the relationship runs.

    Tap a person to light up their line.
  2. 2

    Check it in their profile

    A profile shows the relationship right under the name, with how many steps away they are, for example Paternal Grandfather (2 steps).

    The relationship, spelled out.
  3. 3

    Find the word in your family's language

    The free relationship calculator gives the right term for any relative across 40 traditions, including Hindi, Tamil, Telugu, Punjabi, Chinese, Japanese, Korean, Arabic and Yoruba. The cousin calculator works out exact cousin degrees, like second cousin once removed.

    The right word, in 40 traditions.

Common questions

What does once removed mean?+

It means one generation apart. Your parent's first cousin is your first cousin once removed.

Can it show in-law relationships?+

Yes. Relationships through marriage, like brother-in-law or mother-in-law, are worked out too.

Related guides

Screenshots show a made-up example family. Last updated 23 September 2026.

Ready to try it?

Start your family tree in your browser. It is free, and you do not need an account to begin.

Open the relationship calculator