Cat Age Calculator
Convert cat years to human years, see your cat's life stage, and compare common age milestones using the standard first-year, second-year, then four-years-per-year model.
Adjusts the aging pace and average life expectancy estimate.
Convert cat years to human years
English search intent for a cat age calculator is a quick cat-years-to-human-years conversion, usually with a chart and a plain explanation that the old multiply-by-seven shortcut is not accurate.
H is the approximate human-age equivalent. C is the cat's calendar age in years.
Cat life stages
| Life stage | Typical age | How to read it |
|---|---|---|
| Kitten | Birth to 1 year | Fast growth, socialization, vaccines and basic habits. |
| Young adult | 1 to 6 years | Adult activity with routine weight, dental and behavior monitoring. |
| Mature adult | 7 to 10 years | Age-related changes can be subtle without regular checkups. |
| Senior | Over 10 years | Health history, pain, mobility and quality of life matter more than the number alone. |
Frequently Asked Questions
Sources and References
- 2021 AAHA/AAFP Feline Life Stage GuidelinesAAHA
- Feline Life Stage DefinitionsAAHA
- Cat Age Chart: How Old Is My Cat in Human Years?PetMD
- Cat Age CalculatorInch Calculator
Calculations are based on the listed reference sources. Links open in a new tab.
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