Most pet cats live around 12–18 years, with many comfortably reaching their mid-teens and some making it to 20 or more.

Typical lifespan

  • The average life expectancy for domestic cats is usually placed in the 13–17 year range.
  • Some individual cats, especially well-cared-for indoor ones, can live into their late teens or early 20s, though this is less common.

Indoor vs outdoor cats

  • Indoor cats often live 13–17 years or more because they are protected from cars, predators, infectious disease, and harsh weather.
  • Mostly outdoor cats may live closer to about 2–5 years due to higher risks like traffic accidents, fights, and infections.

Breed and other factors

  • Mixed-breed cats tend to live a bit longer on average than purebred cats, and females slightly longer than males.
  • Certain breeds have different expectations: for example, Maine Coons are often cited at roughly 10–13 years, while some breeds like Savannah cats may reach up to around 20 years.

Health, weight, and care

  • Staying at a healthy weight, being neutered/spayed, and having regular vet checkups all help extend a cat’s lifespan.
  • Being significantly overweight and missing preventive care (vaccines, dental, parasite control) is linked with shorter life expectancy.

“Cat years” vs human years

  • Roughly, a cat’s first year is similar to about 15 human years, the second year adds about 9 more (making around 24), and each year after that adds about 4 human years.
  • By around 7–10 years old, many cats are considered “senior,” comparable to middle-aged to older adults in humans.

TL;DR: With good indoor living, vet care, and healthy weight, many modern pet cats now reach their mid-teens, and seeing 15–20 years is increasingly common.

Information gathered from public forums or data available on the internet and portrayed here.