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What is my grandma's grandma to me?

Your grandma's grandma is your great-great-grandmother (also called 2nd great-grandmother); you are her great-great-grandchild.

6.25% shared DNA on average. Real amounts vary.

Diagram: how your grandmother's grandmother is related to youYouParentGrandmotherGreat-grandparentGreat-great-grandmotherthem

you them common ancestors double line: marriage

Your grandma's grandma is four generations above you: your great-great-grandmother. Genealogy software often writes “2nd great-grandmother”, which means the same.

Each “great” adds one generation: grandmother (2 up), great-grandmother (3 up), great-great-grandmother (4 up), 3rd great-grandmother (5 up).

How we worked it out

Follow the chain one step at a time:

  1. Your grandmother: grandmother (2 up, 0 down)
  2. Your grandmother's grandmother: great-great-grandmother (4 up, 0 down)

She is your direct ancestor (your great-great-grandparent).

She is 4 generations above you.

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    Related questions

    What is the difference between great-great-grandmother and 2nd great-grandmother?
    None. They are two ways of writing the same relationship. The numbered form is easier to read as the greats pile up.
    How much DNA do I share with my great-great-grandmother?
    On average about 6.25% (1/16).

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