Cat Age Calculator
How old is my cat in human years?
The AAFP life-stage scale: 15 human years for the first, nine for the second, four a year after — and which stage that puts your cat in.
Questions people ask
The things that come up about cat age calculators, answered plainly.
When is a cat a senior?
The AAFP calls 7 to 10 mature, 10 to 15 senior and 15 and over geriatric — which is roughly 44 to 56, 56 to 76 and 76-plus in human terms. Indoor cats routinely reach 15 to 20.
Do cats and dogs age the same way?
For the first two years, near enough. After that cats add about four human years a year and dogs four to seven depending on size, so an old cat is usually 'older' than an old dog of the same age.
Related tools
Exact ages, next birthdays, anniversaries and the odder age scales.
Dog Age CalculatorThe staged veterinary scale — 15 for the first year, nine for the second, then four to seven a year by size — with the 2020 DNA-clock figure beside it.
Pet Age CalculatorDogs and cats on the veterinary life-stage scales rather than the seven-times folklore, which is wrong at both ends by years.
Age CalculatorYour age in years, months and days, worked out the way a birthday works — plus the totals in weeks, hours and seconds, and how long until the next one.
Date Difference CalculatorEnter two dates and get the gap in every unit at once — years, months and days as a person would say it, and the exact total in weeks, hours, minutes and seconds underneath.