Cat age calculator

Age in years and months.

In human years

Life stage-

Next stage-

First year = 15 human years, second year = 9 more (24), then about 4 per year, the scale used in the AAHA and AAFP feline life stage guidelines. Months in the first two years are spread evenly.

Cat age	Human age	Life stage
1 year	15	Young adult
2 years	24	Young adult
3 years	28	Young adult
4 years	32	Young adult
5 years	36	Young adult
6 years	40	Young adult
7 years	44	Mature adult
8 years	48	Mature adult
9 years	52	Mature adult
10 years	56	Mature adult
11 years	60	Senior
12 years	64	Senior
13 years	68	Senior
14 years	72	Senior
15 years	76	Senior
16 years	80	Senior
18 years	88	Senior
20 years	96	Senior
22 years	104	Senior

Enter your cat's age in years and months.

How it works

The first year of a cat's life equals about 15 human years and the second about 9 more, so a 2 year old cat is about 24. After that, each cat year adds about 4. This is the scale used in the AAHA and AAFP feline life stage guidelines.

Life stages: kitten (birth to 1 year), young adult (1 to 6), mature adult (7 to 10) and senior (over 10).

Source: Pumpkin, citing the AAHA, International Cat Care and AAFP life stage guidelines. More in cat years to human years.

Cat age calculator

How it works

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