Cat Age Calculator
Enter your cat age in years and months to get the human year equivalent on the standard feline scale, plus its life stage from kitten to senior.
Enter the cat age to convert it.
How to use
- Enter the cat's age in years and months - be as accurate as you can.
- The tool converts it to human years using the standard feline scale and names the life stage.
- Use the life stage (kitten, junior, adult, mature, senior or geriatric) to guide feeding and vet visits.
- Estimate only - your vet is the final authority on your cat's health.
The scale used is the widely published veterinary guide: the first year of a cat life equals about 15 human years, the second year adds about 9 (24 total), and each later year adds about 4 human years. Indoor cats commonly live 12 to 18 years. Estimate only — not medical advice.