Cat Age Calculator

How this is calculated

Cats mature very quickly in their first two years — a one-year-old cat is roughly equivalent to a 15-year-old human, and a two-year-old cat to about 24. After that, aging slows to roughly 4 human years per cat year.

As with any age approximation, individual cats vary — indoor vs. outdoor lifestyle, breed, and overall health all play a role. If you're noticing changes in behavior, appetite, or mobility as your cat ages, it's worth a vet visit rather than guessing from age alone.