Free tool · dogs & cats

How old is my pet in human years?

Convert your dog or cat's age into human years — adjusted by species and size, based on modern veterinary aging charts.

Human-age equivalent
human years
Life stage
Your pet

An estimate based on average aging. Breed, health and lifestyle all play a part — your vet knows best.

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Senior pet? Vet visits add up.

As pets age, check-ups and treatments get more frequent. Compare pet insurance plans before the bills do.

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How pet years really work

The old “multiply by 7” rule is a myth. Pets age fast early in life, then slow down — and larger dogs age quicker than small ones. CanMyPet uses a more accurate model:

That's why a 10-year-old Great Dane is "older" in human terms than a 10-year-old Chihuahua.