Have you ever wondered how old your cat is in human years?
No need to look and figure it out further – this cat age calculator will give you all the information you need by converting cat years to human years.
Based on the official “Cat Life Stage Guidelines” (https://www.aaha.org/).
What else do we know about the correspondence between the years of cats and humans
Let’s throw you some fun information regarding the ages of our feline friends:
- The principle of converting cat years to human years;
- A table of correspondence between the years of a cat and a human;
- What is the life cycle of cats: from kittens to older animals?
- How do you know the age of a cat?
- What affects the lifespan of cats?
The principle of converting cat years to human years;
There is some misconception that one year of a cat’s life is equal to seven human years.
In fact, the calculation of cat years is a little more complicated. Kittens grow quickly while they are still small, but the older they get, the slower the aging process is.
This means that your one-year-old cat will be the same age as a roughly 15-year-old teenager.
However, for adult cats, each year is roughly equal to only four human years.
Based on research, the American Animal Hospital Association has published a guideline “Guidelines for Cat Life Stages”, which outlines the aging process of cats.
The logic of our calculator is based on this guideline, so we vouch for the reliability of the result.
Table of correlation of cat and human years
Our cat years to human age conversion calculator should return data according to the table below.
But maybe someone is interested in seeing the correspondence between the cat and human years in the table.
| Cat’s age, years | Correspondence to the age of the man, years |
|---|---|
| 3 months | 4 |
| 6 months | 10 |
| 1 | 15 |
| 2 | 24 |
| 3 | 28 |
| 4 | 32 |
| 5 | 36 |
| 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 |
| 22 | 104 |
| 23 | 108 |
| 24 | 112 |
| 25 | 116 |
| 26 | 120 |
What is the life cycle of cats: from kittens to older animals
The following life stages are defined according to the Cat Life Stage Guidelines:
- kitten: up to six months;
- junior: 6 months – 2 years;
- prime: 3-6 years;
- mature: 7-10 years;
- senior: 11-14 years;
- geriatric: over 14 years.
How do I know the age of a cat?

Of course, we usually know how old our pet is.
But if you have adopted a stray kitten or cat, then of course the animal will not tell you how old it is.
However, there are a few signs that can give you a clue as to its age.
Cat’s teeth.
Teeth are a great indicator of a cat’s age in cat years.
In kittens, teeth appear after two to four weeks after birth.
And already permanent teeth appear at around four months of age.
So, if you open a cat’s mouth and see permanent white teeth, the cat’s age is likely to be about a year old. The presence of some yellow teeth can already indicate an age of about one or 2 years.
However, the presence of plaque or calculus on all the teeth indicates that the cat may be about 3 to 5 years old.
Well, of course, the lack of teeth or part of them can mean that you have a fairly mature cat – 7-10 years old or more.
Cat muscle tone.
Young animals are more likely to have more toned muscles. They will be taut, wiry and playful, so to speak.
Older cats, on the other hand, tend to have flabbier muscles and skin. You can also look for hanging or protruding skin on the cat’s shoulder blades.
Pet hair.
The condition of a cat’s coat is another great indicator of the animal’s age. Kittens and young cats usually have soft, thin layers of fur. Whereas older cats have thicker, coarser coats.
Older cats may have gray or white (gray) patches.
Cat’s eyes.
Bright, clear eyes with no tearing characterize cats of a young age. A cat with some “cloudiness” in its eyes, on the other hand, is likely to be 10 years old or so.
The iris of the eyes can also tell us the age of the cat. Young animals have a smooth shell, while an older cat may have a slightly jagged one.
What affects the longevity of cats?
Let’s try to identify the most significant reasons that affect the longevity of cats. We know of 7 factors.
Breed of cat.
While it’s impossible to know exactly how long your pet will live, some cat breeds, often live longer than others.
For example, Siamese cats, Balinese, and other cat breeds often win the competition in longevity.
At a minimum, we can cite 15 breeds that live longer than their other relatives.
Keep in mind that both purebred and mixed-breed domestic cats can live quite a long time.
Cat nutrition.
Cats are obligate carnivores because they prefer meat as their staple food to fulfill their nutritional needs for animal proteins. It is the need for animal protein that should be the foundation of a cat’s diet.
Studies have shown that dietary choices can affect the health and longevity of our pets.
Exactly, animal proteins (remember what a field mouse is made up of) are the diet to aim for.
Medical care.
Certain diseases have been proven to have lasting effects on a cat’s health and can also shorten their lifespan.
Poor genetics, immune-compromised animals, and cats that have organ abnormalities may not live as long as we would like.
Availability of physical activity in the pet.
If you have any interactive cat toys, they are perfect for getting your cat moving.
One fun option could be to play with your cat with a laser pointer – but be mindful of safety and possible frustration in your pet.
A cat’s mental health.
Cats can also be sad – especially if they are bored. Most cats like at least some variety in their lives. And of course, the best entertainment is “hunting”.
Again, toys and special climbing complexes can help keep your cat entertained.
Naturally, the best way to keep your cat in the best mental frame of mind is to give them your time by playing with animals.
Spayed or neutered animals.
Spaying is known to reduce the risk of diseases that can affect a cat’s reproductive system in old age. Also, female cats tend to live 1-2 years longer than male cats.
Lifestyle.
Some cats are considered to be exactly “indoor” animals, while others live only outdoors (outdoors).
However, it should be remembered that the daily risks of free-range cats are much higher than those of indoor cats. Therefore, the life expectancy of outdoor cats is often shorter.
Cats that live at home are not exposed to as many risks because they are protected inside their homes.
Wild animals and vehicles pose no threats to our pets, and their diet is usually controlled by their owners.
Now you know who is older – you or your cat! And if you don’t know, our calculator will help you 🐈
