Cat lifespan guide

How long do cats live?

Reviewed: 2026-09-08 · Model: cat-lifespan-v0.1

Direct answer

Most companion cats in cat-lifespan-v0.1 start from an 11.7-year population baseline, with a broad starting range around 9.5 to 15.5 years before profile adjustments.

Why the answer is a range

A single average cannot describe every cat. A 12-year-old indoor cat has already passed early-life mortality risk, while a kitten, outdoor adult, or cat with a major chronic condition has a different planning context.

PetLifeYears therefore reports estimated lifespan, lifespan range, and remaining years together instead of a fixed date.

Factors that change the estimate

The cat model combines breed baseline, current age, sex, neuter status, indoor or outdoor lifestyle, body condition, activity, and known health history.

  • Indoor lifestyle receives a bounded positive adjustment because it can reduce traffic, injury, parasite, and infectious-disease exposure.
  • Ideal body condition receives a bounded positive adjustment, while underweight, overweight, and obese categories add risk context.
  • Country is collected for US, UK, Canada, Australia, China, Singapore, and Japan context, but cat-lifespan-v0.1 does not adjust the numeric result by country.
Estimate your cat's lifespan

Use the calculator for a personalized educational range based on age, lifestyle, body condition, and health context.

Related guides

Sources and limits

Lifespan numbers on this page are traced to the listed source set or the versioned PetLifeYears model. They are educational planning ranges and do not replace veterinary advice.