01
0–6 months
Kitten
Rapid growth, vaccinations, socialization window
For the curious cat parent
How old is your cat really?
A little perspective for every nap, headbutt, and birthday treat. Turn your cat's age into a human-age estimate in just a few gentle steps.
Find their human age
slow mornings
welcome here
welcome here
The little calculator
Tell us about
your companion.
Every cat has their own rhythm. This is a common-age estimate, made for a useful conversation starter.
Their approximate human age
— years old
—
A guide for every chapter
Understanding Your Cat's
Life Stage
Every age has its own kind of care. After you calculate above, your cat's current stage will be highlighted here.
Read the full life stage guide
02
6 months–2 years
Junior
Reaching physical and social maturity
03
2–6 years
Prime
Peak health years
04
6–10 years
Mature
Early senior changes begin — weight, dental, joints
05
10–14 years
Senior
Increased vet visit frequency recommended
06
14+ years
Geriatric
Highest-risk stage, most care-intensive
A simple rule of thumb
Cats grow up quickly,
then find their pace.
First year
The big leap from tiny paws to a full-grown personality.
Second year
A year of confident curiosity, counted a little differently.
Each year after
From here, every birthday adds about four human years.
These numbers are a friendly estimate, not a veterinary measure. Your cat's health, breed, and history are part of their real story.
Go deeper
Explore by topic,
find your answer.
The science
How Do Cats Age?
The real formula behind cat years, and why "×7" fails.
The bigger pictureHow Long Do Cats Live?
Average lifespan, and what changes the number.
Life stagesKitten to Senior
Every stage explained, with a kitten age chart and senior signs.
Senior careSenior Cat Health
Kidney, thyroid, joints, teeth and weight, made clearer.
FeedingCat Feeding Guide
What and how much to feed, from kitten to senior.
BrowseAll Cat Breed Guides
Lifespan, health risks and care for every breed covered.
One more thing