Cat Years Calculator

Cats age differently than humans! Our feline friends mature quickly in their first two years of life, and then their aging slows down. Use this calculator to convert between human years and cat years.

Human Years to Cat Years

Cat Years to Human Years

About Cat Years Calculation

The conversion between cat years and human years is not as simple as the old "7 human years to 1 pet year" myth.

A more accurate method recognized by veterinarians is:

  • A cat's first year is roughly equivalent to 15 human years
  • The second year equals about 10 more human years
  • Each additional year equals about 4 human years

This means that a 2-year-old cat is approximately 25 in human years, and a 5-year-old cat would be around 37 human years old.

Factors like breed, health, and whether the cat lives indoors or outdoors can also affect a cat's aging process.