Cat Age Calculator

As a cat owner, you’ve probably heard the idea that one human year is equal to 7 cat years. But in reality it’s a bit more complicated than this. Cats mature far more quickly than humans, reaching sexual maturity at around 6 months. This rapid maturation is why the first year of a cat’s life is generally agreed to equate to roughly 15 human years, and the second to an additional 9 years. After this, each additional year adds another 4 years or so.

Indoor cats tend to live longer than outdoor cats. The same is true for neutered cats versus fertile cats. Breed even plays a part, although less so than in dogs - Siamese cats are said to live the longest. The oldest cat on record - a fine feline named Creme Puff - a reached the venerable age of 38!

So while there isn’t really any scientific way to calculate your cats ‘human’ age, you can get a good estimate using our calculator.


Here on Your Paws, I build science-backed tools for pet owners. You'll also find vet-checked answers to common questions and in-depth reviews of food and toys, all designed to help you make the right decisions for happy, healthy pets. Read more about the site.

The content on this website is intended to be informative, but it should not be taken as a substitute for personal advice from your vet. See our editorial policy and disclosure to learn more.

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