Family Tree Completeness Calculator
Track your family tree research progress across 5 generations with per-generation completeness scores.
Inputs
Results
Overall Completeness
29%
Gen 1 (Parents)100%
Gen 2 (Grandparents)100%
Gen 3 (Great-GP)75%
Gen 4 (2x Great-GP)25%
Gen 5 (3x Great-GP)6.3%
Total Known18
Total Possible62
How to Use This Calculator
- Enter the number of known ancestors in each generation from Generation 1 (parents) through Generation 5.
- Review the completeness percentage for each generation to identify where gaps are largest.
- Check Overall Completeness percentage across all five generations.
- Use the Unknown Ancestors count to set concrete research goals for the next genealogy session.
- Focus research effort on earlier generations with low completeness for the greatest impact.
How the result changes with Gen 3: Great-Grandparents Known (of 8)
| Gen 3: Great-Grandparents Known (of 8) | Overall Completeness |
|---|---|
| 0.8 | 20.6% |
| 2.8 | 23.9% |
| 5.2 | 27.7% |
| 7.2 | 31% |
What each input means
- Gen 1: Parents Known (of 2)
- Number of parents identified (maximum 2)
- Gen 2: Grandparents Known (of 4)
- Number of grandparents identified (maximum 4)
- Gen 3: Great-Grandparents Known (of 8)
- Number of great-grandparents identified (maximum 8)
- Gen 4: 2x Great-Grandparents (of 16)
- Number of 2x great-grandparents identified (maximum 16)
- Gen 5: 3x Great-Grandparents (of 32)
- Number of 3x great-grandparents identified (maximum 32)
How this is calculated
Worked example, using the default values
- Identify Input Parameters4 parametersGen 1: Parents Known (of 2) = 2, Gen 2: Grandparents Known (of 4) = 4, Gen 3: Great-Grandparents Known (of 8) = 6, Gen 4: 2x Great-Grandparents (of 16) = 4 = 5 input(s) provided
- Calculate Overall CompletenessOverall Completeness29 = 29%
- Calculate Gen 1Gen 1100 = 100%
- Calculate Gen 2Gen 2100 = 100%
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