Cat age calculator

How to calculate the human age of a cat?
One can, for a better appreciation of youth or old age of its cat, to convert his real age in its human equivalent. Very easy with our free tool:

A cat

Methodology to calculate the age of a cat

Practically, there is no mathematical formula (well at least, not a simple one) because the age of a cat does not follow a linear curve compared with the human age. Like many animals, "childhood" and "adolescence" occur much faster than humans.

So it's rather from observations of the ages of cats that veterinarians have established a correlation table (age chart) to see an equivalence in human age:

Cat real age 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
Human age 19 24 28 32 36 40 44 48 52 56 60 64 68 72 76 80 84 88 94 100

Ages of cat

Throughout his life, the cat, just like human, sees physiology, health and physical change.

Here are some pointers:
  • age to neuter a cat: A cat can be neutered at any age but it is best to perform this castration when the animal reaches sexual maturity and before its first reports. This age is around 8 months for males.
  • age to sterilize a cat: A female cat can be spayed at any age but it is best to conduct this operation as soon as the animal reaches sexual maturity and before her first heat. This age is around 6 months for females.
  • Life expectancy of the cat: a cat can live 15 to 20 years.
How do we call?
  • a young cat : a kitten
  • a female cat : a cat
  • a male cat : a cat !


If humans had Jeanne Calment, the oldest cat in the world was a female cat named Creme Puff.
She died in 2005 in Texas (USA) at the age of 38 years (and 3 days), which would correspond to a human aged nearly 170 years !!!
The most incredible is that Jake Perry who raised Creme Puff, also had a cat of 34 years, Granpa Rexs Allen who died in 1998!

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