See the Family Search website Cousin Chart—Family Relationships Explained (familysearch.org) to see how family relationships are computed (last reviewed on 13 Jul 2023). A section of it is attached here.
Update--A second chart entitled "Easy Cousin Relationship Chart" has been added (22 Oct 2024) because it adds some clear instructions on how to use the chart(s).
Submitted by Richard Hungerford at 11:11 AM on July 13, 2023.