Last updated: April 13, 2026

Cat Age Calculator

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Table of contents

How old is my cat in human years?

Cats mature rapidly in their first two years of life. A 1-year-old cat is roughly equivalent to a 15-year-old human, and a 2-year-old cat is about 24 in human years. After that, each additional cat year adds approximately 4 human years.

Cat life stages

  • Kitten (0–6 months): 0–10 human years
  • Junior (7 months–2 years): 12–24 human years
  • Prime (3–6 years): 28–40 human years
  • Mature (7–10 years): 44–56 human years
  • Senior (11–14 years): 60–72 human years
  • Geriatric (15+ years): 76+ human years
years

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