Inbreeding Coefficient Calculator
Estimate the COI of a planned mating and see whether it falls in a healthy range.
Estimated offspring COI
12.50%
High inbreeding
This is an estimate for education. A precise COI requires a full multi-generation pedigree and Wright’s coefficient across all shared ancestors, which AllBreeds computes automatically from your animals’ recorded pedigrees.
What is a healthy COI?
- • Under 5% — low, comparable to breeding unrelated animals.
- • 5–10% — moderate line-breeding; commonly acceptable.
- • 10–25% — high; proceed only with strong justification.
- • Over 25% — very high; strongly discouraged.
Learn more in our guide on understanding the inbreeding coefficient.
Get exact COI from real pedigrees
AllBreeds calculates true multi-generation COI automatically from your animals’ recorded pedigrees.
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