Cat Age Calculator – Convert Cat Years to Human Years Instantly (2025 Chart)

Ever wondered how old your cat really is in human years? The old “multiply by seven” rule isn’t accurate, cats grow up fast in their first two years and then age more slowly. Our free Cat Age Calculator instantly converts your cat’s real age into human years using the latest veterinary research. Compare indoor vs outdoor cat lifespans, explore the full cat years to human years chart, and discover your cat’s true life stage in seconds.