FREE · HEALTH & FITNESS CALCULATORS
Cat Age Calculator.
Convert your cat’s age into human years and see its life stage, from kitten to senior.
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How to use Cat Age Calculator
Enter your cat’s age in years and months.
How it works
1 month ≈ 1 human year, 6 months ≈ 10, 1 year = 15, 2 years = 24, then 4 human years per cat year. Life stages follow the AAHA/AAFP feline guidelines.
Example
An 8-year-old cat is about 48 in human years: 15 for the first year, 24 at two, then 4 more each year.
Questions about Cat Age Calculator
Is Cat Age Calculator free, and do I need an account?
Yes. This tool is free to use in your browser without an account. Processing takes place on your device.
What are the limits and what should I check?
An estimate; indoor cats often live longer. Everything is calculated in your browser; nothing you type is uploaded. Review the result before using it in your work.
Is my input sent to a server?
Your input is processed in your browser and is not uploaded by this tool. Files and pasted text are cleared when the page is refreshed. Normal website requests are still required to load the page and its libraries. Read the privacy explanation.