Cat Age Calculator
Compare a cat aged 1–25 whole years with an approximate human-equivalent age.
Formula
At 1 year: 15; from 2 years: 24 + 4 × (cat age − 2).
Approximate human years ≈ 24+4×((5)-2)
How to use
- Enter the cat’s age in whole years.
- Use an age from 1 to 25.
- Read the approximate human-age comparison.
Examples
- A 5-year-old cat corresponds to about 36 human years.
Frequently asked questions
Is this a biological measurement?
No. It is a rough age comparison, not a health assessment or lifespan prediction.
Can I enter a kitten younger than one?
No. Early kitten development needs a more detailed age chart.
Do all cats age identically?
No. Individual health and living conditions vary; this simplified chart cannot capture them.
Sources
Updated: