Cat Age Calculator

How It Works

The American Association of Feline Practitioners uses a non-linear formula for cat-to-human age conversion. A cat's first year equals roughly 15 human years because cats mature incredibly fast: a 6-month-old kitten is equivalent to a 10-year-old child in terms of sexual maturity and physical development. The second year adds about 9 human years (making a 2-year-old cat roughly 24 in human terms). After that, each cat year equals approximately 4 human years. Indoor cats live significantly longer than outdoor cats because they face fewer risks from cars, predators, disease, and harsh weather. The oldest recorded cat, Creme Puff, lived to 38 years old, which is roughly 168 in human years.