How to calculate a cat’s age in human years

We cats can live to an average of 15 to 20 years. This life expectancy can vary a great deal depending on the risks we face and the care we receive from our family.

According to these calculations, when we talk about a cat’s adulthood, we refer to his second or third year of life, when the feline is sufficiently developed to be able to live a full life. When a cat is around two years old, its age in human years would be about 25. That’s a big difference, isn’t it?

Here we give you all the information on cats you need to know to learn how to calculate your cat’s age in human years according to its current age in cat years.

How old is my cat in human years?

They say to calculate the human age of a cat or a dog, each calendar year of life is equal to 7 years. But this statement is not completely true, as we will see below.

Calculate your cat’s age using this information:

A kitten’s age in human years

  • Kittens younger than 1-month-old: 1-year-old in human years
  • Between 2- and 3-months-old: 2 to 4 human years
  • Between 4- and 5-months-old: 5 to 9 human years
  • Kittens that are 6-months-old: 10 human years

A young cat’s age in human years

  • Between 7- and 12-months: 12 to 15 human years
  • Between 12- and 18-months: 17 to 21 human years
  • 2-years-old: 24 human years

An adult cat’s age in human years

  • 3-years-old: 28 human years
  • Between 4- and 5-years-old: 30 to 35 human years
  • 6-years-old: 40 human years

A mature or elderly cat’s age in human years

  • Between 7- and 9-years-old: 43 to 50 human years
  • 10-years-old: 55 human years
  • 15-years-old: 75 human years
  • 20-years-old: around 100 human years

Cat lying on a man's knees

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