Cat age calculator
How old is your cat in human years? Enter their age to see it, along with their life stage.
How cat years work
Cats mature quickly. A one-year-old cat is about 15 in human years and a two-year-old about 24. From then on, each cat year adds roughly four human years. This is the chart used by International Cat Care.
Cat years to human years chart
| Cat age | Human years | Life stage |
|---|---|---|
| 6 months | 10 | Kitten |
| 1 year | 15 | Young adult |
| 2 years | 24 | Young adult |
| 4 years | 32 | Young adult |
| 7 years | 44 | Mature adult |
| 10 years | 56 | Mature adult |
| 12 years | 64 | Senior |
| 15 years | 76 | Senior |
| 18 years | 88 | Senior |
| 20 years | 96 | Senior |
Life stages follow the AAFP feline life stage guidelines. Read more in our guides to cat years to human years and caring for a senior cat.
PetTrackr helps you keep track. It is not veterinary advice: if your pet seems unwell, call your vet.
Questions people ask
How old is a 1-year-old cat in human years?
About 15. Cats grow up fast: a two-year-old cat is roughly 24 in human years, and after that each year adds about four.
How old is a 10-year-old cat in human years?
About 56. That makes a 10-year-old cat a mature adult, on the edge of the senior years.
When is a cat a senior?
From about 11 years old (around 60 in human years), following the AAFP feline life stage guidelines. Senior cats benefit from a vet check every six months.
How long do cats live?
Many indoor cats live into their mid-teens, and plenty reach 20. Diet, weight, dental care and regular check-ups all make a difference.
Care that changes as your cat does.
PetTrackr adjusts weight ranges, check-up reminders and tips to your cat’s age and life stage. Join the waitlist for early access and a launch discount.