Cat Age Calculator
Convert cat years to human years with the AAFP life-stage model — from kitten to senior feline.
years
Human-equivalent age
53
Breakdown
- Life stage (AAFP)
- Prime
- Old ×7 estimate
- 28
Last updated:
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FAQ
How long do cats live?
Indoor cats commonly reach 15–20 years; the record is 38. Indoor-outdoor cats average far shorter lives due to traffic and disease.
How old is a 1-year-old cat in human years?
About 21 — cats reach full physical maturity in just 12 months, then aging slows dramatically.
When should cats get senior checkups?
From age 10, twice-yearly vet visits catch kidney and thyroid disease early — the two most common feline senior conditions.