How old is my cat in human years?

A cat's first year is about 15 human years, the second reaches about 24, and each year after adds roughly 4 human years. So a 5-year-old cat is about 36 in human terms.

🐱 Cat age calculator

Cat years to human years

Find your cat’s human-year age, life stage, and expected lifespan in one slide.

Breed Pet’s age: 2 years

24 human years

Adult Typical lifespan: 11–14 years

Size-aware estimate based on the AKC dog-age chart & veterinary life-stage guidance. A guide, not a diagnosis.

Cat age chart

Cat age	Human years
1 year	15
2 years	24
3 years	28
5 years	36
8 years	48
11 years	60
14 years	72
18 years	88

Indoor cats commonly live 13–17 years, and many reach their late teens or twenties with good care. Outdoor cats typically have shorter lifespans.

For general education only — not veterinary advice. Ask your vet about your cat’s individual health.