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  This cat years calculator below will convert cat age to human age or vice-versa.

  Converting the difference between cat years and human years isn't as simple as using the factor of 7.

 The reason is cats mature a lot more quickly in the first couple of years. To convert cat age to an human age, a method is to add 15 years for the first year. Then add 10 years for the second year.

  Then after that, just add 4 years for every cat year. This means that by year two, a cat has matured to about the same as a 25 year old human.

1/ Select My cat is

2/ Put in the how many normal years your cat is.

3/ Select Calculate

Not everybody agrees on the same conversion formula.


• 1-mth-old kitten = 6-month-old human baby
• 3-mth-old kitten = 4-year-old child
• 6-mth-old kitten = 10 human years old
• 8-mth-old kitten = 15-year-old human
• 1-year-old cat has reaches adulthood, the same as 18 human years
• 2 human yrs = 24 cat yrs
• 4 human yrs = 35 cat yrs
• 6 human yrs = 42 cat yrs
• 8 human yrs = 50 cat yrs
• 10 human yrs = 60 cat yrs
• 12 human yrs = 70 cat yrs
• 14 human yrs = 80 cat yrs
• 16 human yrs = 84 cat yrs

Because you can look at the conversion in two different ways, it can be somewhat confusing.

1. First Perspective:  Assume the maximum age of a human is 100 years old and calculator that  above, it shows the equivalent age of a cat (that is, the assumption that the maximum age of a cat) is 20.8 years. Now if you were 100, You are "20.8 cat years old".

2. Second Perspective is the same as the Cat Bible above, which indicates if your age is, 16 years, then your cat is nearing its life term and is like a human that is 84 years old, we can say you are "84 cat years old" or for comparison with the first perspective, if your age is 100 years you would be roughly "500 cat years old".

Can you see the difference? Which method do you like? In the calculator above we've used the first perspective.

Facts: the longest-living feline is recorded at 34 years old according to some sources. Siamese and the Manx cat breeds are the longest-living cats on an average. By keeping your cat indoors will typically double its lifespan!

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