Counting cousins - explaining second, third, and fourth cousins. {}
AncestryDNA® can match you with your cousins with a high degree of accuracy with a simple DNA test. You may discover many of your 4th and 5th cousins—and sometimes even your 8th or 10th cousins. In fact, if you and your DNA matches both have family trees connected to your profiles, AncestryDNA can often find your common ancestors for you and tell you exactly how you’re related.

AncestryDNA Matching White Paper {}

What does the match confidence score mean? {}

Understanding Kinship Terms {}

How Many Centimorgans Do You Share With Your Relatives? {}

Cousin Calculator {}

Estimating Relationships from Shared DNA {}

The Shared cM Project - Version 4.0 - March 2020 {pdf -}

The Shared cM Project - Version 4.0 - March 2020 {image -}