How Old Is My Cat in Equivalent People Years?

How Old Is My Cat?

Cats grow rapidly for the first year then level off some, finally reaching full adulthood by the third year. After that the pace is more gradual. Diet and exercise can have an impact on how your cat ages; as does weight (heavier cats show their age sooner.)

Here is a convenient conversion chart to see how old your cat really is compared to a human:

Cat Years                Human Years

1 month                   5-6 months

2 months                 9-10 months

3 months                 2-3 years

4 months                 5-6 years

5 months                 8-9 years

6 months                 10 years

8 months                 13 years

1 year                     15 years

2 years                   24 years

3 years                   28 years

4 years                   32 years

5 years                   36 years

6 years                   40 years

7 years                   44 years

8 years                   48 years

9 years                   52 years

10 years                 56 years

*Add one year for every 3 months of age from here on.

(E.g. a 21 year old cat would be equivalent to 100 human years)
   

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