Cat age calculator

Wondering how old your cat really is? There is a difference in cat years and human years. Calculate the age of your cat with the calculator below and read more about cats further down the page

Did you know that your cat's calculator is one of our most popular calculators? You are obviously not the only one who will convert cat years to / from human years.

How to use it?

Write as indicated your or your cat's age in order to find out what its / your age is in the other's world. Choose whether the number you entered is years or months. Then press "Calculate" and the result will appear at the bottom.

Fill in the fields below

Your cat is ___ human years.

Cats and cat years


Conversion between cat years and human years is not as easy as walking by 7 (as some people mistakenly believe in dogs, and sometimes cats). The main reason is that cats grow rapidly in the first couple of years of life. To convert the age of the cat to a corresponding human age, an accepted method is 15 years in the first year of life. Then add 10 years for the second year of life. After that, add four years for each year. This means that by year two, a cat has become about as old as a 25 year old man.

So it's not very complicated, but some headlines are being cleaned to find out your cat's age. That's where this cat's calculator comes handy.

Simple cat eye view

For comparison and reference, the book "The Cat Bible", a book by Tracie Hotchiner, shows the following overview.

1-month-old kitten = 6-month-old human baby
3-month-old kitten = 4-year-old child
6-month-old kitten = 10 years old
8-month-old kitten = 15-year-old man
A 1 year old cat has reached adulthood, corresponding to 18 years of age
2 human year = 24 cat years
4 human years = 35 cat years
6 human years = 42 cat years
8 human years = 50 cat years
10 human year = 60 cat years
12 human years = 70 cat years
14 human years = 80 cat years
16 human year = 84 cat years

Some interesting facts

The longest living cat was 34 years old.
Siamese and Manxras are, on average, the longest surviving cats.
And keeping the cat indoors usually doubles its life!
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