Calculate Your Cat's Human Age

Enter the age and weight of the cat to obtain an estimate of the animal's human equivalent lifespan.

The human equivalent age of this cat is:

0 human years

How is the estimate determined?

The relationship between a cat's age and human age is not linear. A common approach is to assign 15 human years to the first year of a cat's life, 9 years for the second, and 4 years for each subsequent year.

Unlike dogs, where weight plays a significant role in aging, for cats, this relationship is less emphasized in the literature. Therefore, we chose to follow the consensus described above.

Human Age Table for Cats

Cat Age	Human Equivalent Age
1 month	6 months
2 to 3 months	2 to 5 years
4 months	6 to 8 years
6 months	10 years
7 months	12 years
12 months	15 to 16 years
18 months	20 to 21 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
11 years	61 years
12 years	64 years
13 years	68 years
14 years	72 years
15 years	76 years
16 years	80 years
17 years	84 years
18 years	88 years
19 years	92 years
20 years	96 years