The “7-year” rule is simple for a broad answer. However, it is not entirely accurate. Cats age faster during the first two years of life. In a feline’s first year, he or she reaches the human age equivalent of 15. By a feline’s second year, he or she is the equivalent of age 24.

Although other factors, such as breed, might also influence how old your cat is in human years, roughly, five year old cat would be 36 in human years and a 15 year old cat would be 76 in human years. See the differences between cat years and human years with our cat age chart below.

This calculator is based on the average lifespan of a healthy cat. Experts say that a one year old cat has roughly the age of a 15 years old human and a two years old cat has the age of a 25 years old human.

The easiest way to convert between cat years and human years is to use this cat age calculator. Alternatively, you can look at the cat years chart below which sums up the aging process of a typical feline.

According to the American Veterinary Medical Association (AVMA), cats reach the equivalent of 15 human years in their first year of life and 24 human years by their second. After their second birthday, our fur babies start to age about four human years for every cat year.