how old is a 3 month old cat in human years?


how old is a 3 month old cat in human years

Cat lifespan calculator

It's no secret that cats are fascinating creatures. With their graceful movements, independent nature, and mysterious demeanor, they have captivated humans for centuries. But have you ever wondered how long they actually live? Or how to calculate their age in human years? In this article, we will explore the lifespan of cats and provide you with a handy calculator to determine the equivalent human age of your feline friend.

How old is your cat? 

Life stage  Age of cat Human equivalent age
Kitten Birth – 6 months

0-1 months

2 months

3 months

4 months

5 months

6 months 

0-1 years

2 years

4 years

6 years

8 years

10 years  

Junior 7 months – 2 years

7 months

12 months

18 months

2 years 

12 years

15 years

21 years

24 years

Adult 3 – 6 years

3 years

4 years

5 years

6 years

28 years

32 years

36 years

40 years

Mature 7 – 10 years

7 years

8 years

9 years

10 years

44 years

48 years

52 years

56 years

Senior 11 – 14 years

11 years

12 years

13 years

14 years

60 years

64 years

68 years

72 years

Super Senior 15 years +

15 years

16 years

17 years

18 years

19 years

20 years

21 years

22 years

23 years

24 years

25 years

76 years

80 years

84 years

88 years

92 years

96 years

100 years


108 years

112 years

116 years


how old is a 3 month old cat in human years?

  • A one-month-old kitten is equivalent to a six-month-old human baby.
  • A 3 month old kitten is equivalent to a 4 year old child.
  • A 6-month-old kitten is equivalent to being 10 years old in human years.
  • An 8-month-old kitten is equivalent to a 15-year-old human.
  • A 1-year-old cat is considered an adult, similar to an 18-year-old human.
  • 2 human years = 24 cat years 
  • 4 human years = 35 cat years 
  • 6 human years = 42 cat years 
  • 8 human years = 50 cat years 
  • 10 human years = 60 cat years 
  • 12 human years = 70 cat years 
  • 14 human years = 80 cat years
  • 16 human years = 84 cat years.

Age conversion for cats

One common misconception is that one cat year is equivalent to seven human years. While this formula may be easy to remember, it is not entirely accurate. The age of a cat actually varies depending on its life stage.

During the first year of a cat's life, its body matures rapidly. A one-month-old kitten is roughly the equivalent of a human infant, while a three-month-old kitten is more comparable to a human toddler. By the time a cat reaches one year of age, it is considered to be about 15 human years old.

After the first year, a cat's age slows down relative to a human's. From the ages of two to nine, each cat year is roughly equivalent to four human years. So, a two-year-old cat would be about 24 in human years, while a nine-year-old cat would be approximately 52.

Once a cat reaches ten years of age, each cat year is roughly equivalent to five human years. This means that a ten-year-old cat would be around 60 in human years, and so on.

Cat years vs human years

Now that we understand how to convert a cat's age into human years, let's take a closer look at the different life stages and their corresponding ages.


Kittens are undeniably adorable. They are full of energy, curiosity, and mischievousness. During this stage, their bodies are rapidly growing, and they are learning essential skills for survival. At around three months old, a kitten is roughly equivalent to a human toddler, experiencing the world with wide-eyed wonder.


Adulthood is the prime of a cat's life. They are the perfect balance of independence and companionship. From the ages of one to nine, cats are considered adults. In human years, a one-year-old cat is about 15, a two-year-old cat is around 24, and a nine-year-old cat is approximately 52. Just like humans, cats may show slight signs of aging during this period, but they are still active and playful.

Senior years

Once a cat reaches ten years of age, they enter their senior years. Just like older humans, senior cats may experience a decline in physical abilities and may require specialized care. From the ages of ten and beyond, each cat year is roughly equivalent to five human years. This means that a ten-year-old cat would be about 60 in human years and a fifteen-year-old cat would be around 75. It's crucial to provide senior cats with a comfortable and supportive environment to ensure they enjoy their golden years to the fullest.

Remember that each cat is unique, and factors such as breed, genetics, and overall health can influence their lifespan. While this article serves as a general guideline, it's best to consult with your veterinarian for a more accurate assessment of your cat's age and health.

Now that you have a deeper understanding of a cat's lifespan and how to convert their age into human years, you can appreciate their journey through life even more. So next time you celebrate your cat's birthday, you can also give them a special shoutout for their equivalent human age!