Deterministic model
Core lifespan numbers come from versioned code and reviewed inputs, not from AI-generated guesses.
Read the methodology
Science-based cat lifespan calculator
How long will my cat live?
Estimate your cat's lifespan range and remaining years together using age, breed, lifestyle, body condition, and health factors.
Private by defaultEducational estimateSources included
Cat breed guides
Popular cat lifespan guides
Use breed pages as context, then return to the calculator for an estimate that also considers age, body condition, lifestyle, and health history.
View all cat breed guidesBritish Shorthair
Sturdy companion cats whose lifespan should still be interpreted with health and lifestyle context.
Read lifespan guideMaine Coon
Large cats where weight management and preventive care are especially useful context.
Read lifespan guideSiamese
A popular breed with many long-lived individuals, but breed alone is not enough for an estimate.
Read lifespan guideRagdoll
Often kept as indoor companions, making lifestyle context useful for long-term planning.
Read lifespan guidePersian
Breed-related health context matters, so lifespan estimates should stay educational.
Read lifespan guideWhy this estimate is careful
Built for planning, not prediction theater
The calculator pairs transparent model rules with visible sources, so users can understand the estimate without being pushed toward a false exact answer.
Visible sources
Results link back to cat life table research and veterinary education references.
See the researchPrivate by default
The calculator works without an account, and pet profile inputs are not stored by default.
Clear limits
Every result stays educational and avoids exact death dates or veterinary diagnosis.
Based on veterinary and research references
PetLifeYears uses published veterinary and research references as source material for its versioned model. Logos identify reference sources and do not imply endorsement.
