Relationship to Common Ancestor
How to use
This cousin calculator is meant to help you visualize your cousin relationships. To get started, use the two drop-down boxes to select the relationship each person shares with the common ancestor.
For example, if you want to compare yourself with your first cousin’s child, the common ancestor is YOUR grandparent who would be the great-grandparent of your first cousin’s child.
Once you select those two options, you can optionally input the names of all parties. This feature will print the names on the chart and just makes it look a bit nicer.
Once all that’s done, just hit ‘calculate‘ and the tool will show you a visual representation of how you and you’re cousin are related to each other.
To learn more about cousinhood, see our guide to cousin relationships.