Cat Age Calculator
Convert your cat’s age to human years using the internationally recognized AAHA/AAFP life stage formula. Find out what life stage your cat is in.
Enter your cat’s age and lifestyle for a precise human-age conversion. Takes under 15 seconds.
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Veterinary Disclaimer
This calculator is intended for informational purposes only and does not constitute veterinary advice. Cat age conversions are based on the 2021 AAHA/AAFP Feline Life Stage Guidelines. Individual cats age differently based on genetics, diet, environment, and overall health. Life stage recommendations are general guidelines only. Senior cats (11+) and geriatric cats benefit greatly from bi-annual veterinary wellness exams including bloodwork to screen for kidney disease, hyperthyroidism, and dental disease. Always consult a licensed veterinarian for personalized health guidance.
| Cat Age | Human Years |
|---|---|
| 6 months | 10 years |
| 1 year | 15 years |
| 2 years | 24 years |
| 4 years | 32 years |
| 6 years | 40 years |
| 8 years | 48 years |
| 10 years | 56 years |
| 12 years | 64 years |
| 15 years | 76 years |
| 20 years | 96 years |
Senior threshold: Cats are considered “senior” at 11 years (AAHA/AAFP 2021 guidelines).
The oldest recorded cat lived to 38 years (Creme Puff, Texas USA).
Indoor-only cats live on average 2–5 years longer than outdoor cats.
Senior cats (11+) should have bloodwork checked annually for kidney and thyroid function.
Track your cat’s health over time, get life-stage reminders, and receive personalized senior care alerts.
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