Cat age calculator

How this tool works

We use a common comparison: 15 human years for the first cat year, 24 at two years, then four more per additional year. Between these anchors we interpolate linearly, including months. This is a simplified analogy, especially for kittens, not a biological age or lifespan prediction.

References：Zoetis Petcare — cat years and human years

A note on care

PurrTools provides educational estimates and planning aids, not diagnosis or treatment. Each cat has individual needs. Ask a qualified veterinarian about health, nutrition, pregnancy, or unexplained changes.