Cat Year Calculator

Convert human years to cat years. See your cat's life stage and equivalent human age.

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Cat Life Stages

Kitten0-1 years (0-15 cat years)
Junior1-2 years (15-24 cat years)
Prime3-6 years (28-40 cat years)
Mature7-10 years (44-56 cat years)
Senior11-14 years (60-72 cat years)
Super Senior15+ years (76+ cat years)

Quick Reference

1 yrs
15 cat yrs
2 yrs
24 cat yrs
3 yrs
28 cat yrs
5 yrs
36 cat yrs
7 yrs
44 cat yrs
10 yrs
56 cat yrs
13 yrs
68 cat yrs
15 yrs
76 cat yrs
18 yrs
88 cat yrs
20 yrs
96 cat yrs

About Cat Years

Cats age rapidly in their first two years. 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 year adds about 4 human years.

Cat Life Stages

  • Kitten: 0-1 year
  • Junior: 1-2 years
  • Prime: 3-6 years
  • Mature: 7-10 years
  • Senior: 11-14 years
  • Super Senior: 15+ years
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Disclaimer:This tool is provided “as is” for informational and educational purposes only. Results may not be 100% accurate. ToolBird makes no warranties, express or implied, regarding the accuracy, reliability, or completeness of any output generated by this tool. This tool does not constitute professional, legal, financial, medical, or tax advice. Always consult a qualified professional for important decisions. By using this tool, you agree that ToolBird and its operators shall not be held liable for any damages, losses, or consequences arising from the use of this tool or reliance on its results. All processing occurs in your browser — we do not store, transmit, or access your data. Use at your own risk.