Cat Age Calculator

Your details

Switch to find how old a human-year equivalent maps back to cat years.
Your cat's real (chronological) age in whole years. Add months below for sub-year precision.
years
Optional: add the remaining months for a more precise result (e.g. 0 to 11).
months
Breed group shifts the typical life expectancy range shown below. The human-year conversion formula is the same for all breeds.
Indoor cats live significantly longer on average. This adjusts the life expectancy estimate.
Human-equivalent agePrime
28years
AAHA life stagePrime
Typical lifespan12-18 years
Estimated years remaining12years
3 cat yrs
  • Junior
  • Prime
  • Mature
  • Senior
  • Geriatric

A 3-year-old cat is roughly 28 in human years.

  • Cats age fastest in years one and two, reaching the equivalent of a 24-year-old human by their second birthday.
  • Your cat is in its prime stage. Monitor weight, teeth, and keep up preventive parasite control.
  • Based on breed type and lifestyle, expect roughly 12.0 more good years on the average lifespan estimate.

Next stepKeep up annual vet visits and core vaccinations to support a long, healthy life.

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