Cat Age Calculator

Created by Bogna Szyk
Last updated: Aug 26, 2021

If you're a lucky owner of a cat, you are probably wondering whether your cat is still in his youth, or maybe is going through his midlife crisis. Look no further - this cat age calculator will give you all information you need, converting between cat years and human years.

bunch of kittens

You are more of a dog person? Try the dog age calculator! Or maybe a bird pet parent? Then check out our bird age converter.

Cat years calculator principles

It's a common misconception that one year in the life of a cat is equivalent to seven human years. In reality, the cat years calculation is a bit more complicated. Kittens grow fast while they're still young, but the older they are, the slower the aging process becomes. It means that after one year, your cat is as old as a seven-year-old human child, but for older cats, each year is equivalent to only four human years.

old cat and kitten

Naturally, not all cats age alike. A cat that lives outdoors will generally have a shorter life than an indoor cat. Additionally, while typical felines live about 10-15 years, certain breeds age slower or faster. Still, this cat age calculator should give you a good idea of the seniority of your cat.

Would you like to find out even more about cats? 🤔 Try one of our handy tools!

Convert cat years to human years with the cat year chart

The easiest way to convert between cat years and human years is to use this cat age calculator. Alternatively, you can take a look at the cat years chart below that sums up the aging process of a typical feline.

cat years human years
1 7
2 13
3 20
4 26
5 33
6 40
7 44
8 48
9 52
10 56
11 60
12 64
13 68
14 72
15 76
16 80
17 84
18 88
19 92
20 96
21 100

How to estimate the age of a cat?

If you have adopted a stray cat, it might be difficult to accurately estimate its age. Still, there are a few indicators that might give you a hint about the age:

  • Cat's teeth. If you had to settle for just one indicator, this should be it. Kittens have their first permanent set of teeth when they're about four months old. If the cat's teeth are white, you could assume it's about a year old. A more yellowish color hints at the age of one to two years old, while tartar build-up or missing teeth indicate an even older cat.
cat smiling
  • Cat's eyes. Young cats usually have bright, sparkling eyes. Some cloudiness might indicate that your cat is already 10 or more years old. Additionally, the iris of an older cat's eye appears to be a bit jagged.

  • Cat's coat. The fur of a kitten is soft and fine, while older cats tend to have a coarser coat. If you find some patches of gray or white, the cat might already be senior.

Bogna Szyk
Cat🐈 to human🧍 years
Cat years
Human years
People also viewed…

Alien civilization

The alien civilization calculator explores the existence of extraterrestrial civilizations by comparing two models: the Drake equation and the Astrobiological Copernican Limits👽


What personality would you have if you were a cat? Find out with the catculator!
main background