DNA Relationship Predictor
This interactive tool estimates potential relationships based on total shared centiMorgans. There is no exact science for predicting these relationships. There are commonly accepted shared cMs, but they can vary wildly.
Use these predictions as potential leads (not facts) when attempting to establish your relationship to the relative. For more on these estimates, visit ISOGG.
|Parent||Grandparent||Great Grandparent||2nd Great Grandparent||3rd Great Grandparent|
|Main Person||Brother or Sister||Aunt or Uncle||Grand Uncle or Aunt||Great Grand Uncle or Aunt||2nd Great Grand Uncle or Aunt|
|Niece or Nephew||1st Cousin||1st Cousin Once Removed||1st Cousin Twice Removed||1st Cousin 3 Times Removed|
|Grand Niece or Nephew||1st Cousin Once Removed||2nd Cousin||2nd Cousin Once Removed||2nd Cousin Twice Removed|
|Great Grand Niece or Nephew||1st Cousin Twice Removed||2nd Cousin Once Removed||3rd Cousin||3rd Cousin Once Removed|
|2nd Great Grand Niece or Nephew||1st Cousin 3 Times Removed||2nd Cousin Twice Removed||3rd Cousin Once Removed||4th Cousin|