Cat Years to Human Years

Cats age differently than dogs, and the "7 years" rule doesn't apply to them either. A cat's first year is equivalent to about 15 human years, and the second year adds another 9 years. After that, each cat year is roughly equal to 4 human years.

Cat Age Chart

Pet Years	Human Years
0	0
1	15
2	24
3	28
4	32
5	36
6	40
7	44
8	48
9	52
10	56
11	60
12	64
13	68
14	72
15	76
16	80
17	84
18	88
19	92

Want to calculate your pet's exact age? Try our Pet Age Calculator for instant results.

Key Points

Indoor cats typically live longer than outdoor cats
Cats hide illness well - watch for subtle behavior changes
Regular dental care can extend your cat's life
Senior cats need more frequent vet visits

Understanding Cat Aging

Cats mature incredibly fast in their first two years of life. By age 2, a cat has reached the equivalent of about 24 human years. This rapid development includes reaching sexual maturity (around 6 months), full physical size (12-18 months), and social maturity (2-4 years). After age 2, aging becomes more linear at roughly 4 human years per cat year. The American Association of Feline Practitioners divides a cat's life into six stages: kitten (0-6 months), junior (7 months-2 years), prime (3-6 years), mature (7-10 years), senior (11-14 years), and geriatric (15+ years).

Note: This information is for general guidance only. Individual pets may age differently based on genetics, diet, and health. Always consult your veterinarian for personalized advice.

Frequently Asked Questions

How long do cats typically live?

Indoor cats typically live 12-18 years, with some reaching their early 20s. Outdoor cats have a shorter average lifespan of 2-5 years due to hazards. Mixed breed cats often live longer than purebreds.

When is a cat considered a senior?

Most veterinarians consider cats to be seniors around 11 years old. However, many cats remain active and healthy well into their teens with proper care.