Cousin Calculator: Genealogy Relationship Chart Generator

Find the Relationship to a Common Ancestor

Names (optional)

* required field

How to Use the Cousin Calculator

Our cousin calculator is a simple tool that helps you to calculate and visualize the relationship between you and your cousin(s).

Simply select the relationship that you and your cousin share with your common ancestor, and we'll show you a tree that shows the relationship between you and your cousin.

So, let's say you want to find the relationship between you and your second cousin's child. The common ancestor is your great grandparent who would be the 2x great grandparent of your second cousin's child.

By selecting those options in the form, you'll see that you and your cousin are 2nd cousins once removed.

Optional Features

The only fields that are required are dropdown menu options for your relationship with the common ancestor and your cousin's relationship with the common ancestor.

However, what you can do to make the genealogy relationship chart a bit more meaningful is to add names to the option fields for you, your cousin, and the name of your common ancestor.

This way, you'll have a really interesting and unique tree which shows the relationships.

Link To or Reference This Page

We spent a lot of time downloading, cleaning, merging, and formatting the data that is shown on the site.

If you found the data or information on this page useful in your research, please use the tool below to properly cite or reference Name Census as the source. We appreciate your support!

  • "Cousin Calculator: Genealogy Relationship Chart Generator". Accessed on February 29, 2024.

  • "Cousin Calculator: Genealogy Relationship Chart Generator"., Accessed 29 February, 2024

  • Cousin Calculator: Genealogy Relationship Chart Generator. Retrieved from